Hydraulic Steer Monster Chopper Build!

[@GrindHardPlumbingCo]

If you haven’t seen our last wild motorcycle run and drive! kzbin.info/www/bejne/anO3dYSomN12hNksi=T1_uUxxGOuM3kgiA gotta let the new people know that we at Grind Hard Plumbing Co finish and send our projects!

[@MrGreenAKAguci00]

There are hydraulic steering rams for boats. Maybe you guys can do something with that info. Also, the eclectic amalgamation of music in these videos is so damn good every time.

[@michaelphilpott2837]

I work in the hydraulic dock industry 5056 hydraulic oil is dramatically thinner / will flow easily. Also most bikes have 1/1 but also have 27x4 tires…

[@bigajoo]

Have you considered a power assisted steering, like I'm a car?

[@sheldonsshed6335]

Boat electric actuator. Should do the job!

[@tarunsingh7608]

I have seen Engineers working with MNCs and NASA, but to work with you Guys would be the COOLEST JOB in the World, now I wish I was an mechanical Engineer instead of IT.. You must Approach Big Studios for Designing Working Cars for Movies like James Bond, Fast n Furious etc.. 😀👏👏👏👏👍👍🧠🎉🎉🎊🎊🥂🥃🥃

[@colinfurze]

It's looking fantastic, i tried exactly the same steering setup on a tall bicycle years ago and very same issues lol

[@t1nt3d94]

@colinfurze you legend

[@theAquillo]

oi oi i love when creators interact

[@DR0THE]

What the bliddy hell you doing here?!

[@miguelleitao6770]

THEY NEED A PUMP Colin

[@rotzloffel]

hi colin

[@GrindHardPlumbingCo]

Longest video in the Monster Chopper series yet! Do you like the longer format?

[@grantstevinson7087]

Yes! Totally more enjoyable to watch the longer videos

[@realville4042]

I’ve been waiting for this video like a fat kid waits on cake!! Couldn’t be too long!!

[@Michaels_Coffee]

Yes

[@kadecampbell8098]

Yes. There's something oddly soothing about watching it all come together.

[@faisalshibah2869]

Give me a motorcycle i am following you from Kuwait

[@GrindHardPlumbingCo]

Sorry for the late upload we were having content ID issues 😮‍💨 I think we need to go back to using Edwin's music💯

[@aserta]

You guys should invest some money and time to make music. I mean, look at MCM - Moog and Marty have their own music. I'm not saying to go to that level, but doing some plays in house would ease your headaches. Their formula works, has worked for 15 years now. Also, you could make into a GHPco special episode. The quest for the perfect music. :)) Sidenote: you should also look into using the AI programs. If you keep one of those programs into a loop of your own music, you'd be safe as far as content matches. Just a thought.

[@kasnitch]

I like his music . Impressive build . Love this chan .

[@cconnon1912]

You owe us nothing. 😇

[@jackrat8873]

Edwin's music was actually really good, I would occasionally find it in my Spotify playlists

[@nonesocruel]

Monster cat has a content music sub plan for like 10 a month?

[@Exodus_3226]

I've never seen a group of people so happy to be at work. This is honestly calming to me to watch you guys doing what you genuinely love and have a passion for. Love you guys stuff, please keep 'em coming!

[@Darthdoodoo]

Watch a good arborist in the tree its awesome. I saw it and had to become an arborist and I smile every single day 😂

[@Jonathan-L]

Yeah, totally agree ... a happy attitude and laughter really makes the difference. I think we should all laugh more.

[@KJMTurbo]

One note of a few RE: steering… For a gyroscopic system, it’s counterintuitive, as in motion you actually want to counter steer, this will induce a lean of the opposite direction. So when you were turning right and leaning right it was actually standing the bike up and leaning left. This is more noticeable on a street/sports bike at speed and is easily overlooked unless you’ve spent time trying to improve track times. Secondly for a hydraulic system, the fluid needs to be pressurised in the desired direction to flow with less resistance. For anyone that has tried to steer a car with hydraulic power steering with the engine off, you’ll notice just how stiff the steering is. This isn’t just the lack of assistance, you’re fighting the fluid in a restricted space, and the harder you push the more resistance you notice, exactly like a suspension damper. They make electronic power assisted steering pumps. Common and cheap in small GM hatchbacks in Europe. I’m sure you could find something similar in North America. The ones here can be adjusted how much assistance the pumps create with a potentiometer.

[@mckrackin5324]

Something like Volvo assisted steering or maybe Mazda Miata. I was thinking more along the lines of ATV electric power steering. It's designed for 1:1 steering ratio.

[@socks2441]

he knows how to ride motorcycles, but i see what you mean. its massively exagerrated here, making it very hard to get the lean going.

[@socks2441]

yeah, atv electric power steering seems like a good way to go.@@mckrackin5324

[@jessepitt]

I was thinking ATV electric power assist.

[@williambrodmanvi5944]

I 2nd the ATV electric powersteering unit! As you should be able to set it up so that the not a tripple clamp tripple clamp drives its input and then an actuator at the spindle does the output! They are actually pretty good little units that can actually counter react some tire deflection from terrain on like side by sides and whatnot how well it may integrate into this project is yet to be seen. As they are an assist to a manual steering system and not exactly a remote set up. That said sticking with a hydrauluc system may still be prefferd. Either way I think it would be wiser that not to get it sorted out prior to riding of it much more! Kuddos to you for keeping it as light as possible, as I pictured of it going clean thru the fence post and the finally being you baloon mudder tire induced launching off of the car trailer in of the direct distance with out of a real practicail way to bail off even if you wanted too! I'm glad that wasnt the case but ya the steering is pretty important as is probably decent foot pegs should you ever choose to be able to self launch out of harms way! I would think it would be at least a tad bit sketchy knowing that you've got another 46" mudder seeing to follow your every move. That being so staying commited to where ever one sends this monster mudder motorcycle may indeed be a key factor which has me think until possibly you have proven otherwise perhaps keeping of any and all available traction in tact may at some point prove benificial! Or at least I would hold off on shaving the tires until i had determined how robust my final steering is to become as robust enough and it may no longer be an issue! If you do choose to stay hydraulic ya might consider going hydrostatic 2x2 just a thought tho it is your baby and I am very much enjoying watching your build. I hope it turns out to be your best grind hard yet! The barbi boat and dream camper 4x4 tracks where both epic INHO! Grind Hard... & Ride On! The lot of you are the most inspiring thing young america has going for it along with Ambition Strikes. All of you should be proud of what your doing you are certainly earning of it! Great team and great job to all!

[@mountainman1796]

Dropping hour long bangers like this on Friday evenings, right when everyone is getting home, sitting down to relax is genius. Would love to see that become a regular thing... but What a build! This is really awesome guys! Keep it up and can't wait to see the end product!

[@StanleyKubick1]

tell me youre middle aged without telling me youre middle aged

[@shawnkiller90]

@@StanleyKubick1 Tell me your a young buck without saying you're a young buck.

[@JeffRiggz]

Literally same💯

[@PushingDownDaisys]

Hard part to regular uploads is it becomes less fun/creative when its so time restrictive. I agree, but what's best for them to keep pumping out quality is what's best for us.

[@sparkygames3968]

By far one of the coolest builds you guys have done, and Ethan's wife can be happy It's not a Hayabusa

[@GrindHardPlumbingCo]

haha true

[@jcims]

yet

[@jimmylarge1148]

Wait wife?! Yay! I was starting to wonder 😂

[@stevenhaines7756]

Except for the steering bearing!

[@HagsRideOrDie]

In my 20's I had a 73 Super Glide chopper with no front fender. The amount of road grime, rain and slush I caught in my face was nothing compared to what this thing is going to kick up, ha ha! Love the build, keep going!

[@BarbershopReviews]

Oh man, I didnt even think of that!!! They are gonna be COVERED!!

[@brandonabbott7574]

Love the longer format. There are so many adults that are missing out. This is the best channel and build series.

[@dylanlarabie5945]

stop forcing your religion on everyone mad corny @RepentandbelieveinJesusChrist-

[@casefc3s]

Erm... why are adults missing out?

[@pokechopachunky2905]

That steering might work with a small power steering pump, or power assist. Hydraulic fluid is very hard to push without some mechanical force, especially in cold weather. You still might have to make a power assisted drag link for easier steering. Great build

[@jaredlancaster4137]

Can always use thinner fluid or big ol hoses

[@leftaroundabout]

Power steering might bring its own problems though. Bike steering needs to respond much more accurately than car steering, because stability depends fundamentally on the steering action. With passive steering, the bike will stay upright by itself at speed, but if there's a glitch in an active system then it can just spontaneously throw you off for no apparent reason.

[@deadslow201]

It will not work anyway because of motorcycle steering dynamics.

[@mikl911]

He had the the hydraulic lines hooked up correctly the first time.@@deadslow201

[@TheShift1313]

​@@deadslow201what do you mean? This is by no means the first hub steer bike. I dont know if the spindle is tilted at an angle but hub steer bikes still have designed in rake and trail but the benefit is either the rake doesnt change under compression or you can increase rake for more stability.

[@firstarmyspider]

out of literal hundreds of thousands of bikes I watch ppl build, this one is by far the most anticipated finish I believe. love you guys, keep it up.

[@casonlane9504]

Hundreds of thousands? Really?

[@nickg6312]

@@casonlane9504 hyperbole

[@Mouthy_Trucker]

@@nickg6312what ??? nooooo!! NEVER!!!!

[@christhesmith]

Getting sucked into the tiny space between the frame and the rear wheel looks like fun!

[@danielhall-wl4ql]

they put a "do not enter " sticker there

[@chaindog82]

literally the only thing I could think of while watching that test drive!

[@GrindHardPlumbingCo]

26:06 Want to hear more about Will's viral Chang Li Reel? Check out the last podcast episode here kzbin.info/www/bejne/foqomoKYrbdpl7Msi=MSaz38uLMJvAGbre

[@SentAndBent]

#20 is our best podcast so far!

[@Ruckusracing-777]

Chhaaang li

[@TylersHomeDesign]

To fix the steering you need to add a hydraulic pump into the system with actual hydraulic rams and hook heavy equipment controls into the handle bars. The bike looks a lot like the one in batman first knight.

[@hill-gilliegarage4633]

Hk4200a-3 Hydraulic Outboard Steering System Kit Hose Kit Helm 20ft $429.99 eBay 4.7 (116) Free by 1/23

[@chopperwhitewolf7050]

Dude, we gotta have a serious conversation. You built an entire new building to play mad scientist (Which is much appreciated) but Still haven't put a single piece of siding, or any other form of exterior cladding of any kind whatsoever on the house! We watched the shop build, we'd watch a "So it's about damned time we finished the house" video

[@christopherthompson4359]

Love the fact that you show when things don't work and doesn't magically just work the first time. Your creativity is off the charts.

[@mikel.6126]

Design tip: keep in mind the torque the cylinder exerts on the wheel is the force times the PERPENDICULAR distance from the centerline of the cylinder to the pivot center of the steering knuckle king pin. Make the mount where the rod end of the cylinder attaches taller, this will make the cylinder more parallel to the length of the bike, making the perp distance larger and giving you more torque

[@KafeMann]

As I read this, all I can hear is that one kid in math class saying, "when will I actually use this in real life?"

[@Darthdoodoo]

Did i just catch you being all smart n shit😂😂😂😂

[@whiskeyminer1073]

I was thinking the same, that the force he's feeling is because the angle of the front cylinder in relation to the way he's using the cylinder to turn the hub. Maybe a different steering linkage to multiple his steering force or booster? or change the the front cylinder angle to gain more torque?

[@biggestcomplainer]

Smart

[@playingscales84]

You can see the master piston flexing up and down creating steering lag. You can also hear the fluid struggling to transfer. The orifices or lines could stand to be opened up, a thinner fluid would help also. Another big tip, the amount of trail the front end has determines how well the bike will steer. However, the width and curvature of the front tire is pivotal to the handling as well. You will never get the bike to steer properly with that wide and square of a profile due to its counter active motion to the increased castor angle. This bike will never handle safely until the front tire profile is either narrowed greatly or rounded substantially as in it's current form the relation of center of mass vs contact patch is opposite of what is required for safe and intuitive operation. At best, this will handle similar to the batman motorcycle, like a missile that doesn't turn until a lean angle of 40 degrees. That being said, it looks awesome and is one hell of an undertaking. Very impressive.

[@gussowsclassicbluesharmoni2726]

Awesome project! Many years ago, my brother, Seth Gussow, built a recumbent motorcycle in a shop at MIT, where he was a 16-year-old freshman. It was insane, dangerous, and marvelous: exactly what you'd hope for in a truly innovative build. This project has a lot of that same gonzo spirit. More of it, actually. You gents are crazy--and I mean that in a good way. I'm hearing some Wright Brothers vibe. Kitty Hawk here you come. Next summer, I hope.....

[@the.happy.mechanic]

You might need an electronic hydraulic steering pump to make the steering more responsive and quicker. It might also help out turning left. It looks like it doesn't want to turn left.

[@charlesking1421]

I was gunna say the same thing

[@McLivin]

My thoughts exactly you are just using a fulcrum to try and push and pull out a manual line. Its just like using your hands to manually pull out the cylinder. If the cylinder is worth anything it will be hard to push or pull. So long story short you should use some sort of pump to push the fluid in or better yet just use some smaller cylinders that mover freely to force the liquid into the larger system.

[@deadslow201]

It will not work anyway because of motorcycle steering dynamics.

[@the.happy.mechanic]

@deadslow201 it may need linear actuators and an electronic steering and over inflating those flat top tires to round them, but that would be extremely dangerous. The old k5 Blazer had trouble steering left, and it was solved with hydraulic steering or crossover steering. Not that crossover steering would or could work. I've seen an electronic hydraulic steering pump before, not that I can remember what it was on.

[@deadslow201]

@@the.happy.mechanic Steering dynamics are totally different in two wheels vs four wheels.

[@batman3698]

I am abit concerned about the safety of that rear tire against the seat. Looks like it could pinch you pretty bad and cause some serious injury, so maybe do a back rest / mud guard type thing would be my recommendation.

[@mkzhero]

I'm sure, or at least hope they'll do that later on... I mean, yeah, it'd be bad, but having no breaks is about as dangerous, so, its anything but finished at this point... There's a lot of other things wrong with it right now that i do NOT think they can fix tho, like the weight being offset to the side, which i don't get, they could make it an S shape chassis and fix it easily, etc. Also those honeycomb load bearing structures and some other stuff on it looks super finnicky, it makes no sense too because those parts hardly save any weight but take a lot of extra work...

[@pablosatchmo3062]

Exactly what I was thinking hit a bump n land on the back wheel

[@MrDrunkenMoose]

Yeah look at 54:05, that already was close. That shit could literally kill you if it drags you down and pinches you between the seat and the rear suspesion with enough momentum or torque. I'm all for DIY but they need some sort auf fender seat combo asap, to get rid of this insane safety hazard.

[@mkzhero]

@@MrDrunkenMoose yep, but don't forget the stupid honeycomb load bearing structures, if they snap all sorts of bad stuff can happen too... And well, they did snap even in this vid lol

[@ryanlarsen3266]

@@mkzhero he would become the brake if he slid back into that wheel. definitely needs some kind of guard back there, good call. all good points bro

[@_Jake_Elkins]

I’m super impressed with Ethan’s commitment to stick to pure premiumness with this build. I’m sure it’s frustrating to design and build such complex pieces of this bike to find out it doesn’t work. But us viewers definitely notice and appreciate how you are going all out and leaving no stone unturned! Best build series ever. Keep at it man

[@UnmaskedMike]

Ethan wearing a ring is mind blowing to me. This man is a fabrication genius. Please keep your digits safe, they make you money and keep us entertained!

[@kmunga89]

Love these builds. The air steering actuators will eventually leak when used with hydraulic fluid because the fluid will react and eat out the internal seals in the actuators. The steering will work if you find a way of incorporating a pump to put the system under constant pressure, make it an assited steering system. You'll probably need some valves too, I.e. shuttle valves, check valves etc.

[@Turd_Runner]

@RepentandbelieveinJesusChrist- Well, maybe if he had a useful name like enerpac or power team maybe thy shale be more relevant to the tube of you video. ​@RepentandbelieveinJesusChrist-

[@jesseerickson662]

​@@Turd_Runner I think what he's saying is to ask Jesus for help with the steering issues 🤔 😅

[@Turd_Runner]

@jesseerickson662 naa man, he is just a NPC droning about...

[@bobmahnamahknob]

Is that like jeebus take the wheel?

[@skin2117]

When we gonna see some rooster tails

[@erikochmyself]

This is incredibly impressive, the amount of engineering needed to make this is superb

[@neonnerd1364]

I absolutely love the length of the videos you guys put out lately. I can't get enough grindhard. Between new videos I go back and re-watch the older builds. I still have a special place in my heart for the barbie mustang since that's what got me onto you guys. Keep up the premium work! Can't wait to see this bike finished. If will rides it just makes sure he has on 4 hoodies.

[@highvoltagefeathers]

Been following this for a bit, and it's amazing. I don't know if it's been mentioned before, but I'm worried about steering as a function of the center of gravity. In order to lean the bike, you need to countersteer which puts the bike out from under the center of gravity (usually above the axles) and allows you to keep the bike upright and turn. It looks like the CG of the motorcycle could be so close to, or even below the center of the wheels that this isn't possible. It might need a lift to more of a dark knight "batpod" geometry to be rideable. Keep on!

[@Jeremy.Bearemy]

Yeah this thing definitely isn't going to be rideable at any appreciable speed 😂 But definitely looks cool and will be great for a parade

[@TunaIRL]

​@@Jeremy.Bearemy Definitely?

[@adamcochran6323]

So much anticipation for this video! When I saw 50+ minutes I was amped! And you guys didn't disappoint either! Great coverage of the real complexity of motorcycle design, especially ridiculously cool unique bikes. I had a list of concerns when this project got started, and the steering was most of it, and balance. Thanks for sharing the success and failure along the way. Such a cool machine, and my favorite one of your creations to date. Ethan, make some grind hard hex wrenches for your merch page, and Edwin, once again man, beautiful edit and compilation. Your music picks are spot on. Need to make some feature music vids of your drone flights, it would be popular for sure... Can't wait till the next video! Monster chopper rules!

[@killkrazy9913]

imagine slipping back and that rear tire eats you up lol. cannot wait to see this thing functioning. Absolute beast.

[@isaacserbin8763]

They are going to need fenders on it

[@ShaunHensley]

That's all I have been thinking about every time I see this

[@moldynugget8290]

😂I’ve done that kinda with a 3 wheeler

[@Bluuplanet]

It would turn a lot easier with 1" hoses and big fittings.

[@Bluuplanet]

Maybe fasten a sheet of that black UHMW to the back of your hoodie when riding that thing.

[@Catiadr]

I'm sure you have had a lot of feedback on the fluidic questions, but just keep in mind that the diameter of the input cylinder needs to be doubled or tripled to amplify the output downstream. That is the simplified math of it. Adding a towpoint and a winch would be sweet!

[@chrisparti]

If the input cylinder diameter is doubled then the handlebars would move half the angle that the front wheel has turned, it would also reduce the mechanical advantage and require more human force to turn. If you doubled the diameter of the cylinder attached to the front wheel, then it would improve the mechanical advantage, making it easier to move the handlebars, but require the handle bars to turn double the angle of the front wheel. I think the restriction is in the fittings and hoses, they are designed for high-pressure low-flow. If he used larger high-flow hoses (similar to those found on hydraulic injection moulding machines) that should improve it, but the actual port threads into the cylinders may be too small for that approach.

[@legros731]

Won't change the fact it need to pass through the small fittings so it act like a syringe will always be really hard to move The only way this work is to use a small hydraulic pump with a orbitrol steering valve and a steering cylinder could be salvaged from a small front Kubota or John Deere front mount mower or other small tractor Problem will be powering the hydraulic pump Or a Volvo electric power steering pump could be used but the bike electrical system is probably not up to the task

[@yattaran1484]

So happy to see you not becoming the first rider to get hurt from riding this monster !. 😄

[@jesseshort8]

Pneumatic cylinders don't really double as hydraulic cylinders. Getting the right cylinders and lines might make the whole work a lot better. Awesome build though, as always.🤙

[@parkouratheight]

I've seen guys convert pneumatic to hydraulic and it took quite a bit of machining and adding numerous seals to the system. It definitely wasn't plug and play.

[@Nick1one_]

Defiantly put a fender between that rear tire and the seat lol, I had mad anxiety watching how close Ethan got to getting sucked into the tire at the back! Anyway you could try using a steer-by-wire setup?

[@boondock54x4]

There are several vehicles out nowadays that have "electric power steering" it would solve many of the steering issues. I'm not being critical at all. This build is the best thing out right now. I'm just offering my $00.02 Great channel, awesome build. Love the long format video on a Friday evening!❤

[@SlickPlayss]

The engineering genius of grind hard is unbelievable! I get mind blown every time you guys drop a video! Great work!

[@PhuckitFuk]

I don’t think that word means what you think it means!

[@625098evan]

it goes without saying that workmenship on this and other builds on this channel are outstanding. but, I am also endlessly impressed the the cinemetrgraphy. very fun to watch.

[@noobFab]

Steven has become a top notch cameraman. Little details such as pans from one area of focus to another and steadiness of hand all go with basic framing and focus pulls to make grind hard one of the best looking channels on KZbin. Edwin’s editing has also advanced a long way since the early days, but he’s been at an elevated level for a while now. Combine that with Ethan’s status as a mad automotive scientist and you have super-satisfying content!!!

[@parphi3051]

Funny…I was thinking the same thing. Great vid production. Must doing story boards, post production film editing and the whole enchilada.

[@ozbitme]

i built a cargo bike and used pneumatic cylinders like you have. it didn't ever work i replaced it with 2 push pull cables it worked so much better. Boat steering push pull cables worked really well.

[@Fix_It_Again_Tony]

Cables seem really practical here.

[@Backwoodbuilds]

Use a Morse push pull cable from a commercial boat for the steering. You can order them in exact lengths from fisheries supply in Seattle Washington. They are big and beefy low friction but can't make tight turns, but the Arc of your front arm is probably just fine.

[@GeorgeOsborne-l7t]

The level of detail on this build is absolutely wild! Killing it!!

[@thedarkknight1999]

That is amazing!! You need hydro assist for the steering. It will solve all those steering issues.

[@xK0Mx]

Great build man, truly unique and a great level of functionality. **Have you considered the consequences of sliding rearward into the tire? Seems like a taint splitter 😖 Maybe I missed a the rear fender plans

[@badhabit6140]

This. That will kill him even at lower speeds. Please please add some fender, rail just up to your lower back at the very least please

[@KevinTaNet]

He's sitting on bare steal bars at the moment. There's gotta be plans to add a proper seat and hopefully high seat back or fender.

[@somagraphics]

This build is so incredible. I absolutely love your friend dynamic and it's incredible to watch your genius and artistry.

[@gulledgeadamful]

Ethan is like a mad scientist in the shop. And he's got the hair to go with it.

[@timberlineoffroad]

I watched the whole thing great video! You could go full hydro with an orbital and use an electric power steering pump from a volvo and mount it anywhere you want! Cant wait for the next episode!👌

[@astonmoore6126]

Yes, absolutely love the LOOOONG format GHPC videos. At 3 seconds in I already know this is going too be the best 57 mins of the morning!!!!

[@dwightmcintosh8511]

Very cool and excellent workmanship. Couple small thoughts to keep in mind, first is that as those big wheels begin to move you will find a dramatic increase in the gyroscopic effect which will make steering, leaning, and turning increasingly difficult as speed increases, second is you should look up a quick primer on the application of hydraulic force that will show you how to arrange a small diameter piston to exert great force on a large diameter one.

[@brianmathews8649]

As someone who has a problem with saving all his scrap wood, I appreciate Ethan's ability to use all the scrap metal.

[@gregburgess6884]

Absolutely can not wait for the finished product

[@tonylindsay5001]

I've been a commercial diver, boat captain, ran many different vehicles in my life. My uncle was the Dean of Engineering at McGill for decades (William Bruce). I got to see your channel-thru other searches.. Am VERY happy to see a channel that shows lathes, tooling, CAD, design.. EVERYBODY needs to realize, if you can dream it, you can FABRICATE it. THANK YOU for finally showing the process,

[@floyd.pepper]

amen!

[@tonylindsay5001]

I should mention i was on the Nancy Green team back in the '80s.. downhill racer, mogul.. got a cameo in a Warren Miller Film, was a jr Instructor by 11yrs old.. Spent my fair share of time on a monkeyboard in -60 "throwing pipe".. LOVE your "northern Idaho" snow.. you should come play in my backyard.. (British Columbia)..

[@tonylindsay5001]

In 1945, my uncle and a team of engineering students (war rations-no gas) built a wood burning car, and drove across Canada.. your on the same wavelength as us crazy people that put chainsaw motors on mountain bikes..

[@colo_laser]

Counter steering and hard leaning is going to be an important technique to master piloting this beast...

[@amhicks21]

I've driven quite a few tractors with hydraulic steering and they all have quite a bit of internal leakage right from new. Its only a little annoying with a steering wheel because your steering knob is never in the same place but its definitely more of a challenge to find a solution with handle bars.

[@smidtyautosports7158]

Cannot wait to see you riding that piece of Art!

[@gregholmes3661]

This is not just a build…it’s geniuses with art work.

[@manks5491]

So badass. Love the longer format, and the clarity on the b-roll is gorgeous. You guys have perfected your formula with the videos, I can hardly wait for the next one. Beautiful work, fellas

[@benrozema8007]

Its here its finally here... the big one.

[@jimmykoran7805]

I like that you show your whole process even if it doesnt work out. Thats how projects like these go! There is so much unknown since you dont have anything to base it off of really. That system would work great with hydraulic rams and a tiny steering pump of sorts.

[@Dezmage]

I always knew these guys were precise in their fab work but when Ethan said ‘perfect fit except it’s getting held up by the sticker’ that’s when I realized it’s damn near perfection

[@mmmax2g]

There is something to be said about creating a concept and THEN making it a reality; OUTSTANDING job fellas! Going thru the motions to make it work is truly unique and special... Look forward to the next video :)

[@skeeterbuildsit6016]

Love it! I’m sure you could use PSC full hydro steering with some sort of battery powered small pump. Just mount the steering mechanism in your front fork on the bottom of your steering column

[@FrodeAltink]

I don’t really understand why you (Ethan) didn’t start with hydraulic rams? Like, there are brands (like PSC) that make hydro steering. Why not start with that when you have to order stuff anyway. I don’t know that much about hydraulics. But isn’t it quite obvious that an air ram isn’t going to work with hydraulic fluid? Don’t mean to be rude. Just a bit surprised since you have so much experience building stuff and I who have a lot less experience building stuff called it out as soon as I realized that it was air rams.

[@AdamsWorld84]

​@@FrodeAltinkit'll work lol. These guys obviously know what they're doing!! 😂 It's not like they're slow. They're all very well qualified. It it doesn't work as they intended they'll know another route

[@deadslow201]

It will not work anyway because of motorcycle steering dynamics.

[@AdamsWorld84]

​​​@@deadslow201yea it does seem a bit of a weak point. But I'm sure they'll work around the issue. It's an absolute BEAST of a bike and will need some heavy duty style steering for accuracy and safety. But for testing purposes it gives them a starting point and to show the weakness points.

[@datadavis]

@@AdamsWorld84 What are these qualifications exactly?

[@settytb1]

It's cool to see the evolution of you guys. Initially it was kind of cobbling things together, but this is like a work of art. The brackets with the cut outs, are beautiful the flowing designs. This is a gorgeous machine with lots of thought but also just art that went into it. Well done guys.

[@wmden1]

Your air cylinders might have smaller passage holes than a hydraulic cylinder would have, either in the pipe threaded ports of the cylinder, or the line fittings. You might drill out those passages. There also might be an adjustable speed control valve in your line fittings. There is a restriction somewhere.

[@KingCovfefe]

My thoughts as well: pneumatic components often use dramatically smaller passages.

[@dloneyv8]

The builds have progressed in a major way. Bravo you guys! This thing is art!

[@jennifergregory9767]

The centrifugal force on the heavy wheels and tires are also going to make it harder to steer them at higher speeds. Grab a bicycle rim, spin it on the bearings and try to steer it with your hands holding the axle. You will get what I'm saying.

[@deadslow201]

It is a very common misconception that gyro forces would play a major role in bicycle or motorcycle (steering) dynamics.

[@joell439]

@@deadslow201are you high? 😊

[@zcrazyg9114]

@@joell439 i wondered the same thing... HUGE difference when you are talking bycicle wheels to motorcycle wheels to an oversized wheel such as this lol.

[@outdoorchristianboy]

You don’t really “steer” a motorcycle at speed. You just have to turn the tire enough for the bike to lean. Steering a motorcycle at speed is easier than sitting still.

[@deadslow201]

@@joell439 It is a very common misconception that gyro forces would play a major role in bicycle or motorcycle (steering) dynamics.

[@allenmaker2718]

Be careful to not be rolled down by the back wheel which can heavily 😈 continue by it's momentum ) But yeah fun design!

[@timwoods9350]

To increase the steering force In your current system you could use a larger bore for the master cylinder compared to the slave. It would work as a force multiplier. Ie 2x larger bore would except twice the pressure. You would also have to increase the id of your hoses to allow for the increased flow

[@deckname5794]

I think you have that backwards. But basically it will just change the steering ratio.

[@Berm_Blaster]

Pretty sure he's right. The bore on the slave being larger than bore of master cylinder won't increase pressure and will definitely to accommodate the higher pressure with larger lines.

[@deckname5794]

Just imagine a jack or a hydraulic press. The master cylinder is always smaller in diameter than the slave because you want to increase the force the slave cylinder can output. Same here. Anyways to change the steering ratio you can just change the length of the levers attached to the cylinders.

[@timwoods9350]

@deckname5794 your definitely correct. Small bore diameter on the steering side / big bore diameter on the salve side will increase force. To fix the steering ratio you would have to adjust the stroke length to account for the extra volume. The only other way I could think to increase the force whilst keeping the system passive would be to increase the arm length where the cylinder attachs to the steering knuckle.

[@deckname5794]

@@timwoods9350 You can only increase the steering force by changing the steering ratio, meaning you have to turn the handle bars further to steer the same amount. Smaller cylinders would have the advantage that you have to move less fluid and therefore reduce losses. But moving fluid and pushing seals back and forth will always have some friction.

[@nickparkinson3458]

Best build on KZbin by far!! Imagine if you used the front swingarm pipes to carry the oil instead of the hydraulic lines, like some motorbikes that use the frame as a oil tank, it would look super clean!!

[@drakeenglish1683]

This think never disappoints. This is such an amazing build and your truly killing it on the design side of things. I can't wait to see it finished and I'm excited to see what you do to fix the steering side of things. It looks so bad ass rolling. It truly is rolling art man.

[@macks5352]

Man yous are gonna be designing cars and bikes for movies in no time 💯💯💯🔥🔥🔥

[@dalemiley3713]

Great stuff! I'm not sure if it's been mentioned, but maybe an outboard hydraulic helm could work for the steering?

[@ericarmstrong2412]

I was thinking an alternative to the hydronic steering while keeping a similar foot print would be a boat stick steering setup. Linear output with a rotary input. Gear ratios might be a little tricky but would fit the build perfect.

[@nateback796]

Hey guys absolutely love the build! The steering is a great concept once you iron out the forces, But there is one BIG concern I have about speed wobble once it's driving under its own power. I can see the slop amplifying a wobble. Just something to test thoroughly as you start adding more speed.

[@maukaman]

Interesting point. Speed wobbles are terrifying on any wheeled vehicle but wobbles on a wheel that you’re straddling that weighs more than you do sounds like a nightmare

[@slim_pickins6393]

You guys definitely need to bring that to Sturgis this year. Bad ass!

[@MyStrawberry-ee4qb]

With these tires, either you have to use a sensor and a decent servo motor+generator combo. Or you use an electro-hydraulic system, but in the winter you have to wait for the fluid to warm up and when it’s at a higher temp you have to cool it down and that takes up a lot of space and adds weight to your already heavy bike.

[@p.i.staker886]

I think you need to turn your steering system into something that's effectively a giant brake master cylinder and booster. The idea is sound, but for a wheel that big you need the booster. Plus turning the drive cylinder into a master cylinder solves your bleeding/filling problem.

[@Skiper747_2]

Love your build can’t wait to see it in further action

[@Jaguartmb]

Guys guys, we need to see this project completed, its amazing!

[@UmmmmmmmWhat]

This bike is turning out awesome. It still has my vote as Will's daily driver, so he can't speed... and won't get run over as easily. 😅

[@GrindHardPlumbingCo]

It would be hard to speed with this thing!

[@erinyorke6774]

Except if he did the tires would sound like jet turbines

[@lahoozer6694]

​@@GrindHardPlumbingCo Get proper/quality PSC steering cylinders. Use check valve in a T with a quick disconnect at the system high points on both sides. Use a porta power to "charge"/pre pressurize the system. Steal the portable power fittings for the quick disco/check valves. Could presurize the system to thousand+ish lbs.

[@keithherring5462]

Please call this "the Swindler" !!! GHPS version of the tumbler.

[@marielarebelo9194]

Haha

[@adamcochran6323]

The swindler is perfect!

[@IvysSSousa]

I think it would be cool for you to make another motorcycle identical to this one, but mirrored, so when you take the bikes to events and meetings you can place the bikes next to each other as if it were a car

[@Goatee_yay]

Yesss! Make it so you can hook them together like cboys did with pitbikes but on steroids.

[@everythingcool101]

batman style, exactly what i thought

[@yoy4629]

Excellent workmanship.

[@ShenanigansWrenchRepeat]

I'm excited to see how you remedy the steering cause I'm sure it will be nothing shy of impressive. Thank you guys for the rad content and inspiration! 🤘🤘🤘

[@BoomBoomLou]

Just looking at it. There should probably be a plate behind you so that giant wheel doesn't eat you up.

[@LynnLight]

I love your creative mind...so much fun.

[@motoboggin2619]

your most likely fighting gyroscopic stabilization in the tires, thats a large part of whats keeping you from steering, you're probably going to need to play with caster angle to help combat this. and a counter balance spike coming out of the rims would look dope af.

[@johan.mp4]

Yes, and to get the bike to lean, you have to counter-steer. But those tires probably do not have that great leaning angle 😅

[@Dartagn]

The part where they tested steering without the tire mounted shows it is more of a bug in the design than the tire (although the tire doesn't help.)

[@melanieenmats]

Seems to me the main problem is going to be the rectangular shape of the tires. It's because of the shape that he can't lean. Without leaning if he steers he will just topple to the other side of the turn. The other option is to somehow put weight on the turn side without leaning, like they do in side car racing. But I don't think the weight of one person would be enough to keep the wheels flat in turn at even moderate speed. I think change to rounded tires or make it into a tricycle.

[@dangerrangerlstc]

The problem with full hydro steering, is there's no guarantee the steering input will stay synced with the steering angle of the wheels, which is kind of required on a bike. I think you could get a lot accomplished mechanically with u-joints and steering shafts running through the middle of the swing arm. Either that, or progressive linkage like what's used on excavators.

[@stevebaker5642]

would the addition of a hydraulic pump to the steering somehow help? ie, like power steering in a car/truck whatever? .. either way, EPIC build Ethan!! loving this series!

[@gusser2121]

I was thinking the same thing... a booster of some sort. but that would entail an electric booster pump because I can't see them routing anything from the engine.

[@stevebaker5642]

true, however, unless they wanna kickstart this monster, a battery will already be in there somewhere - needed for lights also, so if a slightly bigger than std lithium battery (pwr + weight reduction, - with hexagons in the mounting too, lol), then the elec booster pump is a viable option.

[@ackeblack1968]

There is a lot of 12v electric pumps for the steering so that is a minor problem, without pressure from a pump you are pressing the fluid with the handlebars so it is going to be hard work.

[@folarinosibodu]

Gotta admire people who build physical things with their hands and a few tools.

[@ToddLarsen]

I wonder if a series of gears inside that amazing frame structure would be any benefit to steering ease? Thanks for sharing, and as always, keep building 👍

[@thetriforceeagle8161]

The extra force would still have to come from somewhere, couldn’t pull much else out without sacrificing steering angle or widening the bars

[@kork5065]

Awesome build. If you added a hydrostatic pump you'd be able to power both wheels and the steering off of it, doing away with that ugly chain drive. You'd get insane traction that way

[@socks2441]

chain drives are not ugly imo

[@williambrodmanvi5944]

Again with the hydrostatic as a viable option its got my thumbs up! I agree chain drive is not ugly but to make it 2x2 chain drive certainly would be lol!

[@williambrodmanvi5944]

I think as you put it! The build has a certain worthyness to it! That said it would be a considerable investment in both time and money to at this point opt to go hydrostatic. Just the fact that its a consideration is in my opinion a tribute to what your build is indeed worthy of, as i do believe should you go this route you will in the long run have maybe not the fastest craziest thing you may have imagined to start but you may infact have an incredibly competent mudder motorcycle that out performs any notion you may have ever dreamed of it too! All with the most managable of ease... Very cool indeed no matter what route you may take with it. Certainly worthy at this point of at least considering of hydrostatic which is impressive in itself as hydrostatic is often only opted for in rather heavier more robustly engineered of systems. Building of something good enough to even think about applying hydrosyatic drive has your build most certainly above and beyond any kind of back yard go kart contraption, good job!

[@marinomusico5768]

Simply AMAZING ❤ Can't wait to see more ❤❤❤

[@aminehayto7028]

This is one of my favorites projects I ever watched

[@bosswinrwin]

Great work of a great man! Salute brother! ❤🫡

[@phillipmuriithi94]

Been waiting on this update alone very...passionately More please! 🙃

[@maeckz84]

This looks really very awesome! Can`t wait to see the whole thing running when it is finished! Maybe instead of this 8 percent under-steering you could try to let the hydraulics over-steer for better response, if that`s possible. The big wheels and its space between them makes for a huge turn radius. I think I would like to compensate for that with a higher turn ratio instead of a lower one. Sorry for my English, not a native speaker… but an excited hobby engineer! Loved this video and your dedication!🥰

[@michaelpal7641]

A fully equipped garage with all the tools to make stuff? Priceless!! Watching a 57 minute video of a bike build that only "rolls"? Has this bike been completed?

[@pj7362]

Hats off to the footage and the editing.

[@tootallzz]

Very cool project build! That plasma cutter is so cool! I am very impressed with this video❤Thank you for sharing!

[@zachb541]

I love how precise you are with everything, oh that sticker is holding it up 😂

[@TJBRUTALCUSTOMS]

man i am amazed your pants didn't get pulled into the chain from the jackshaft!! had me puckered for a second there! good show dudes!!

[@JohnDoe-fg1di]

Definitely an absolutely beautiful creation! And! You're also going in a super sweet direction with this style of build! This thing should climb small cliffs!!!!

[@Mad-Duk_Machine_Werkes]

Steering could be done with Floor Shifter cables from a car (or Steering cable from a Boat) - if One isnt enought then rig up TWO like a Push-Pull deal?

[@davidowen888]

I Agree Nathan you have the skills for Movie props 👌💪☮️

[@borashid3371]

It is really something new and fun to create in this way... but I do not wish to try it before making a protective cover behind the back or a protective cover behind the back... because the back tire pulls the person backwards in any mistake or fall... and this causes the driver to slip and be pulled between the tire and the rear chassis of the mask. The rear tire.. We wish everyone safety.. Thank you for what you are presenting again and amazingly, and moving forward, my friend..