Mad Max Rotary Trike Burnouts Lights and More!

[@GrindHardPlumbingCo]

Big thanks to Ridge for sending us this wallet and supporting the channel! Here’s the site if you want to check them out! ridge.com/GHPC

[@that_red_dentside3968]

You gonna let rolly polly roll it?🤣

[@GrindHardPlumbingCo]

@@that_red_dentside3968 If he so desires haha

[@that_red_dentside3968]

@@GrindHardPlumbingCo right on!

[@josephmills7186]

@@GrindHardPlumbingCo try to do a collab with rob dahm

[@elijones4372]

For the issue with braking power why not try find a twin rotor front wheel and go down that route?? Love what you do guys 🤘🏼😝🤘🏼

[@angelmotorsports]

Time to send the whole thing over to Virginia for a rebuild and tune soon 😂👍🏽

[@LS_Jo]

FOR REAL

[@nicksutton6123]

yessssss .. needs a vargus touch up

[@marcs5790]

I was gonna tag you if you didn't comment hahaha

[@averagecarguy420]

Yessss guys!

[@xMrJunglistx]

< 3

[@nemisist8805]

You guys should be putting 2stroke oil in the gas to save the apex seals and lube the magic Doritos. this is a pro tip as the rotary engines have oiling issues

[@IllegallyAcquiredKIA]

Premix everything!

[@lysergicvisions8239]

Did you get that info from #RobDahm lmao..

[@kasuraga]

@@lysergicvisions8239 lmao they should probably watch some robdahm. that rotary needs some tuning work big time. Premix in dorito's though is an old trick. Been around forever. It's a lot more reliable than the oiling system they use from the factory

[@Gu1tarZer0]

I'd wager they were told that by Mike Vargas, he built that 13b if I remember right

[@nemisist8805]

@@lysergicvisions8239 lol im a engine builder with lots of experience with racing. but that guy does give good info from the racing world. to funny lol

[@rjc862003]

Gotta address your Fuel/ignition issues I recommend installing the oil injection delete kit and switching to pre-mix(amsoil saber at 100:1) you basicly remove the engine oil injection and leave the stock oiling for the rotating assembly then you run a good two stroke premix to keep the seals happy

[@shaun3391]

Spot on

[@FarmerFpv]

Them Dorrittos love pure filtered canola oil the best. Screw the fancy off-the-shelf Lard they sell in auto parts stores.

[@garyjohnson4575]

....yeah, what he said!

[@garyjohnson4575]

That light should get a skull cover...

[@madmod]

Lets see about the vargus brother's putting together a big port 2 rotor or even 1 rotor for you guys.

[@jaredmidgett6947]

my vote is for rob dahm

[@jackbarry9469]

If it doesnt have enough traction to hold down existing torque more power wont really help lol

[@lukewilliams1518]

@@jackbarry9469 will be sick tho

[@madmod]

@@jackbarry9469 A mild 2 rotor with larger ports wont produce any more power at lower rpms when compared to a stock engine. All the power would come at higher rpms and for a drift trike, that would be perfect.

[@venumus1]

Vargas bros are lame rob dahm is the real rotary daddy

[@zaneclark5226]

it doesn't sound like it's running right, those things are designed to rev out pretty high, so i wouldn't think it's normal for it to lock up. I may be wrong though, i'm no expert those are just my thoughts, either way i love the build it's super sick!

[@mate_timitime1093]

it does sound like it does need a tune

[@loz4830]

they know, they just don't care because its going to get rebuilt

[@tobylarrison4826]

@@mate_timitime1093 its carbuerated, not tuned the way one would typically think when they think rotary

[@dajiban9325]

@@tobylarrison4826 it's still called a tune because they are fine tuning the carburetor

[@misterdeedeedee]

yeah it sounds like a combination of bad timing/advance and being dead lean, especially with how badly it breaks up in the mid rpm range and 0 exhaust smoke/soot. those header tubes should at least be a dull red after those extended rev sessions. makes sense with them just slapping on a carb straight out of the box with no adjustments. they should probably quit while theyre ahead before they and up with a pre-definition event and shatter a seal and wipe out a housing or iron(s) or rotor.

[@Doogie1954]

Many years ago I had a 1974 Mazda RX 2 or 3 and the tips of the rotors lost compression, while I was waiting for my new motor the mechanic said to dump some oil down the carb to build pressure and that worked. I had tons of fun with the car I would shift it at 10,000 RPM when it started to lose power. The down side was very poor full economy 10 to 15 MPH when working hard. I enjoy your channel keep up the good work!

[@Watchmedome3017]

The Vargas brothers would be crying the way that poor rotary is running i feel bad honestly 😔

[@bigjim8088]

Hey are the ones that built the rotary for the Mystery Machine right? Angel motorsports is that the same ones or am I completely off base. It'd be nice to get them to do another one for this if so.

[@bigjim8088]

Ok yep I checked they definitely need to get on touch with them.

[@Watchmedome3017]

@@bigjim8088 yeah it is bro

[@charlesheinle9908]

Angel motorsports crossover episode?

[@josephdecesaro1528]

The Vargas bros would be a good collaboration but Rob Dahm would be a good one too. Rob is closer to them so it might be an easier collab to pull off.

[@BansheeBunny]

Don't paint the frame, remove any rust, leave as is and clear coat it.

[@biguprochester]

Steel it paint.

[@ImpenetrableBread]

Thisssss Please. I love the look it has

[@Jefferey04]

Thank god they painted it, looks better than a rusted piece of shit that has clear coat over it.

[@BansheeBunny]

@@Jefferey04 You couldn't bother to read my entire post? it was only 14 words...

[@willwilber1179]

I love the fan art. And think it's really cool that you two included it! You're my favorite youtube channel. I'm slowly building up my garage and soon will start my 4x4 sv650 crosscart build (handcontrols as I'm in a wheelchair). At which point I would love to come visit, I'm in washington, and see if you guys can use it to beat your lap time. Or set a new "hand controls" lap time at least.

[@kevinvanhorn4044]

You guys need to get in touch with the Vargas brothers and have them help you beef that engine out

[@kyleconger6544]

Agreed

[@justpoulson]

Ol gal sounds like she’s breaking up at the top end. But what a build. Wow

[@charlesrichardson2372]

Every rotary engine is on the verge of blowing up constantly haha

[@justpoulson]

@@charlesrichardson2372 controlled chaos lol

[@charlesrichardson2372]

@@justpoulson it's cool, right up until it isn't haha

[@swandonovan]

Sounds like it's breaking up everywhere. Needs a tune bad

[@tobylarrison4826]

@@swandonovan its carbeurated, not tuned the way most rotaries would be, my guess is they care about mid range more than top end

[@Innovaspeed]

I've always thought it sounded lean. Rotaries like to have plenty of fuel and they use wayyyy more than piston engines.

[@scotttod6954]

Ya I think the new exhaust leaned out the top end even worse than it was. Little file work on the main jets may help.

[@404_profile_not_found]

With the front fender up that high, I'd think the effectiveness of the light is gonna be reduced a lot. That fender is going to cast a big shadow infront of the bike. Although the driver won't have a good view of the road right in front of the bike anyways

[@robmanueb.]

They said your cable steering wouldn't work and be sloppy, I think you have proved them wrong. Still gives me the shivers knowing that you only need one cable to fail to result in a total loss of steering! Awesome build guys.

[@ruairimurphy9865]

It's crazy how much a light can change the build, makes it look so much cleaner, draws your attention straight to it and makes the whole thing a little less intense and insane

[@connordeemer7543]

For the back fenders you should do it like a old John Deere tractor fenders the box types

[@alexanderpotzelsberger3567]

With sharp edges

[@mikegluth1981]

I was thinking the very same thing. 🤔

[@o4games489]

I had a rotary outboard engine myself. I used to mix some 2stroke oil in de gas for some more lube on the rotor. Maybe just mix like 1:150 or something. Like the build so far!

[@jacobfleetwood4314]

Yo whats up Grind hard We got Rob Dahm's attention in the last video excited to see the collab ✌😁

[@pedal_to_the_metalcolin70]

Such a cool build, can’t wait to see it with all dialled in painted and with the new motor. And now I’m off to order another Ridge wallet I’ve been using the same one for years now

[@joshuajackson8142]

The front fender looks like something “Ronnie Mac”would do hell ya!!!

[@gradycooper7416]

Deff

[@rconger384]

Needs a hood ornament up on the front of that, maybe a pair of big horns from a Texas steer?

[@NONo443]

We need a Angel Motorsports colab on this one, that motor needs to be done right.

[@bigjim8088]

Agreed!

[@atifams130]

Fr

[@CLCIII]

I'm sure hoping you can get that Rotary running 100%. Unfortunately it may internally (compression) related. It should sound like a pissed off chainsaw. Please get it rebuilt and running 100% along with the rear fenders, and it will be some awesome content! You guys are so much fun. I really appreciate the super sketchy, but working builds! Keep up the great work! "It'll just get crazier as times goes on." should be your catchphrase, motto, logo and merch standard!

[@kcjdelanoit]

Gotta have premix fuel, I’d go over the tune again cuz it sounds pretty rough. Sounds like y’all are gonna break it down and go over it all, she’s gonna rip tho. Once it’s running right you’ll have perma-grin

[@dukiemoto8676]

Been following your channel since the very beginning. You guys/Grind hard plumbing are the actual best!

[@manks5491]

absolutely glorious. i love fridays with Grind Hard. also, wheres Sam??

[@kasnitch]

been wondering why Sam isn't working with them anymore as well . always seemed a good part of the team and personable .

[@sasperry]

This has been my favorite build since the start. I love the fact that you are making it street legal. A future video of reactions at a bike rally would be cool. Just a suggestion make the rear fenders detachable so when you take them off play. Great stuff looking forward to more.

[@r1nger81]

Sniper self learning efi kit is a good alternative to a carb when trying to keep things simple or compact. I'm on the beach sometimes, and at high altitude others. That webber would drive me batshit.

[@oikkuoek]

Nice! Did you try to mount the front mud guard backwards before you sliced it into pieces? And, for the top end splutter, more air. Air box with a breathing filter. The current filter is good for 8K on a good day, after dusting it 6,5K, maybe. To get to 10K, some porting and jetting and a decent size airbox is reguired, adding some trumpets inside it also helps. Also, pre-mix. it is basically a 2-T after all. Additional dust cover over the front accessory assembly will give the setup noticeably more miles.

[@cortniesmith3138]

Sounds like you boys need some Dahm love for that engine

[@bisket2003]

LETTER RRRIIIIIPPPPPPPP BOYS! Killin it! Get that baby rollin down the HWY like ASAP! Beautiful as usual.

[@TheRogerKyle]

I really think you guys need to make custom triple trees that are wider so you can run a car tire up front. That contact patch is so small now.

[@johnthegiant320]

when you tear it down for the engine rebuild, would be awesome to get the frame powder coated to match/contrast whatever you decide to paint the engine. That's a very gnarly and cool build!

[@MADelectriCITY]

Is the front of the engine safe from dust and debris getting kicked up into it?

[@isaacmarinchek7432]

I was thinking that too maybe putting some kinds of small cover to protect it all especially the belts

[@Hellsong89]

@@isaacmarinchek7432 Uff i like that idea.. maybe two size wire mesh forced into shape as in dirt bike bottom covers, just take two flatbars to bolt the edges between and weld another into steel tube frame that gets bolted to cover the engine. Smaller one can be really fine mesh, but one that still lets water get off, while bigger one keeps squirrels, mooses and anything bigger out of the engine.

[@vinniejudilla3921]

2 stroke oil.. Your rotor housings and apex seals will thank you. Makes me miss my 94 second gen. Great build guys!

[@aydanangus]

Feel like only 1/2 the spark plugs are doing their job or the carb tune is way off. She doesn't sound like a healthy rotary.

[@GrindHardPlumbingCo]

Yeah she needs a lot of work!

[@zomgz932]

@@GrindHardPlumbingCo talk to the vargas brothers or rob dahm. I would say the vargas's since they have more carb experience to get the trike dialed in. It will be a beast when its running correctly. Also get a tachometer for it also sepending on the age of the engine they dont like over 8500 rpm

[@stringybarkin]

My old boss had a rotary trike registered in Australia in 1970's as a tractor,was mated to a VW rear end ,he rode it to work nearly every day Wasa beast of a thing

[@scoc253]

*Dorito Trike* 🔥🙌🏼

[@GrindHardPlumbingCo]

that is a great name

[@larrybreuer4495]

Always love whatever you post,. … However… I REALLY love the artist’s work at the end credits! They did an Awesome rendition of the two of you!

[@MaNNeRz91]

I know what that guy means... that engine has never sounded right. It's definitely not well but rotaries will run even with coolant seal leaks. The hard starting would point to that to me tbh...

[@DStead2239]

If it were a coolant seal leak it'd be smoking like a steam engine. It probably has low compression. Timing a jetting sounds miles off too.

[@MaNNeRz91]

@@DStead2239 it depends how much coolant but it was definitely smoking 😆 the things seized up guarantee its rusty as shit inside

[@DStead2239]

@@MaNNeRz91 Yeah it wouldn't smoke if it had no water lol. Could be rusty inside🤷‍♂️ but bet the housing are chattered to shit or seals are stuck/broken/warn.. It's an early engine so could be a host of issues lol

[@MaNNeRz91]

@@DStead2239 yeah for sure that engine could have a number of issues. Watching Rob dahms channel shows that these engines still run with countless problems

[@DStead2239]

@@MaNNeRz91 I've barely ever watched Dahm(Don't need too) I've built and owned/own plenty myself.

[@Jordan-ws6jy]

Almost had me there for a sec with the bluetooth brakes! 🤣🤣

[@dtvtechrp]

Check out Angel motorsports they can set up a killer engine for you.

[@GrindHardPlumbingCo]

Will do! Do they work with other youtubers?

[@stunessa1]

@@GrindHardPlumbingCo they did work for Cleetus's mystery machine

[@georgetsichlis]

@@GrindHardPlumbingCo they also worked with Adam lz, hoonigan, Tommyfyeah and some other KZbin channels

[@Fordman7575]

Have you given any thought to a sport bike front end on the trike? That would give you an alloy wheel and could get one with dual rotors/calipers. I don't know if you could find a set up that would have the correct length forks. When you were beating on the trike and turning it looked like there was a lot of side load on that front wheel. I was concerned that the spokes could bend/fail.

[@CJLeTeff]

You guys need to collaborate with the Vargus brothers on that rotary!

[@tom__gray]

Bro. Ngl when he said Bluetooth brakes! I was like dammmm,theve gone all out on this thing😂

[@Cj-gd1db]

U guys really need to have these things tuned before beating them down. The engine has clearly been breaking up and not running right from day one. Love the builds and really just wanna see em shine at full potential and not blow up.

[@rob-f1c]

pretty sure no one else has even though about a rotary drift trike , love how u guys always think outside the box .

[@BuildsNotProjects]

Sounds like your rotary is as sad about life as our 600xlt drift trike before we put a different motor on it.

[@TheJmjunlimited]

My friend has a custom trike with cutting brake. It made a world of difference on handling you could steer true crazy curves just with the brake or turn on a dime anywhere. Very fun toy he drove it to Sturgis

[@spooleht3335]

Is that the same kind of thing on like a tractor? Never heard the term

[@TheJmjunlimited]

It just allows you to apply left or right brake. You can steer in a wheelie as well. It works well it's just a bit hard on the front tire but worth it.

[@justinraab8062]

It’s frickin sick guys! Can’t wait to see it painted and finalized 👏🏼👏🏼

[@Matz0123456789]

This thing is sick. Can't wait to see it finished, only one in the world probably!

[@nixxtable]

proper carb jetting will make that thing riiip!! its so bad ass and probably my favorite build of your guys. sick.

[@GARAGEIdiotS]

awesome job dudes!!! this is wild!!

[@BurningRubberNz]

That headlight and guard make the front end so much better

[@MIKEH.777]

Hey guys how about instead of changing the size of the front brake rotor just put 2 rotors and calipers on the front of the trike. You guys always look like you're having alot of fun and you're awesome to watch. Keep up the great work and God Bless you guys. 🔥💯💪🏼👍👍🙏🙏✌✌

[@NikosPropertyShow]

The amount of talent you have is unreal 🔥

[@frosticuar]

Brake lines routed wrong in the fork. Should be on the backside of the fork so it doesn’t get caught on something passing by. Mint unit! Love your work and creativity!!

[@alanp621]

I see that Amphicat in the background... Can't wait to see more on that!

[@madmod]

I love that headlight. Its getting pretty gnarly.

[@GrindHardPlumbingCo]

It was perfect for this

[@nickgentry6790]

I've used that tribotex stuff in my 02 dodge ram and I noticed a difference in it's power. It runs different then what it did before.

[@sa_biker5582]

Hope you all enjoy your day

[@GrindHardPlumbingCo]

same to you

[@owenkroll170]

Have you thought of using a dual rotor/caliper setup on on each side of the wheel

[@brownsworthy7323]

The Skid Factory should be envious of those shed skids!

[@Ahis89]

I've been rocking that ridge burned titanium wallet for 2 years now, best wallet i ever had ✌🏻

[@fredericrike5974]

Damn, Ethan, your latest terror attack weapon is still just a terror in waiting. I can't wait to see this shred again- get a much better air filtration system, though! FR

[@porscheaircooled]

Dope fab work, can’t wait till you guys get it running right.

[@makeitorleaveit1]

I can't wait to see it welded up and painted 😁

[@darylSKYTZOwillis]

Some people will block off the oil injection to keep the rotors clean and mix in 2 stroke mixing oil with the fuel for lubrication. Also I’ve heard that you can burn E-83 for a cleaner and cooler burn.

[@bman1320]

Just wondering if you guys are premixing your fuel with 2stroke? If you aren't running the original oil injection, you'll want to do that to keep the seals lubricated and last a bit longer. Absolutely love this build!

[@johnbrill1971]

Wow love all the builds you guys have done so far

[@denaldomagataco8409]

Ronnie mac 69 would be proud of that fender cut. Probably add 6 or 9 mph to the top speed

[@roberthickoxjr]

I still love your channel, years later. Thank you.

[@andrewwebster13]

You need to turn this into a winter machine once it is ready. Giant ski or skis on front and paddles or tracks on the back

[@joshvandruff1790]

Probably one of my favorite builds you’ve done. Keep it up! 🤘🏻

[@reesehardy2897]

holler at the king of rotary Rob Dahm. do a badass collab and make a true monster out of this thing

[@x31omega]

Watching this channel always makes me miss northern Idaho

[@pearcy371]

5:55 is that a broken weld?

[@joshnoutch6960]

At some point your gonna want a padded seat surely 🤔 ??? Absolutely sick build guys!!

[@GrindHardPlumbingCo]

For sure!

[@123steveholt]

Cyber punky futuristic! Nailed it!

[@isaacmarinchek7432]

You could use a sport bike duel rotor and caliper set up for front breaks. Also what about some kind of rear break lever that drift cars have

[@mjs2508]

Guys I love the crazy awesome stuff you guys build. I only wish I had all the equipment you guys have for fabrication. I would say to turbo or supercharger the rotory after the rebuild, lol.

[@ryanjooste2294]

Would love to see a Rob Dahm collaboration on this one🤩

[@mfk.marias5477]

The trike shoots flames 😳😳😳

[@ggsjoker6836]

A little tip run a little oil in the gas to help lubricate the a-pex seals

[@stevencunningham4680]

I like the concept of the whole thing , how about adding some body work to cover the engine and some padding for the seat ? Or just get a seat for a stock car or a sprint car. Definitely a roll bar and seat belt or harness if you're making it street legal.

[@terminalpsychosis8022]

Fender don't need any bit sticking out the front. It needs to be mounted low and all backwards to protect the engine and those belts from muck. Kids take their rotary cars to the drag strip, take off all the back pressure from the exhaust, and make MASSIVE horsepower. And inevitably leave parts and oil all over the drag strip. Is there anything near stock back pressure on that exhaust?

[@mxspode]

Definitely has a real MadMax vibe. Pretty cool.

[@Palmer9297]

I see that Barbie power wheels box in the back! STOP GETTING ME AROUSED AT WORK

[@codykahn2173]

Run two stroke oil, the stock oiling system can’t even stop it from locking up!! And I’m no expert but it kinda sounds like the ignition isn’t right

[@Henry-F3]

This thing is awesome!

[@jahviertemple6962]

Will there eventually be a playlist for the trike so I can binge the heckin' heck out of it. Plz say yes! I joind the channel late so I'm seeing the end of a lot of awsome builds! The only thing is that it's hard to go back try to find the first ep of each build (most of are years ago) and watch in order.

[@THEMAXIMOSMAX]

honest to god, watch the 100hp jeep Cornel Senders, it's the most rewarding set of videos ever, months in the making and awesome final product

[@natefessler3961]

WHATA MONSTER! Looks gorgeous, and I can't wait to hear it with a fat-ass tune!

[@plav032]

Put a tach on it when you rebuild it, rotaries can rev, but they need supporting mods to rev to 10k, and they also have no rev limiter unless you put in something to cut fuel or ignition.

[@Mrshotshell]

If the engine is mounted level the carburetor will be sitting at a 8ish degree forward angle because of how the engines are mounted in the stock car. Which would make the rear rotor run a bit leaner than the front since there's less fuel covering the main jet. I'm not sure how far apart the main jets in a webber are but with an edelbrock 4 barrel I had noticeable issues

[@Sillyzombie666]

the space between the handlebars and the fork needs a rib cage and a skull about or holing the head light

[@The.Odyssey]

This thing is really sick! Love seeing your projects

[@themadscientest]

You need to do an oil injector delete and run premix with Techniplate 20% castor to protect that engine once you get it Dahmed. The more I learn about rotary engines the more I realize it is just a 2 stroke in disguise and should have never been running engine oil into it! If Mazda made the oil injector come from a different source and use 2 stroke oil it would have saved the reputation of that engine!

[@BenNawrath]

When are you guys gonna install a massive exhaust fan on the garage?

[@RadDadisRad]

THATS absolutely insane. In a good way.

[@GrindHardPlumbingCo]

Yes!