Homemade JETSKI part 4: Crazy Engine and driveline

Part 4 of my homemade jetski project: POWER!
putting in a superbike engine and connecting it to the jetdrive, this engine is super powerfull and i cant wait to see what it does in the water!
JETSKI PLANS: homemade-madne...
HOMEMADE JETDRIVE PLANS: homemade-madne...

[@marcioreis2648]

Young man I can see you REINVENTING the wheel one of these days. My sincere congratulations. Can't wait for the final project. Keep up the good work.

[@benpowitzky4820]

I am amazed on how creative and talented you are in coming up with your builds. Keep up the awesome work and never stop what you are doing.

[@mkase4697]

As usual, a well put together video. I always think: "I wonder whether he'll put a brace on that. Ah yep, he's done it." Nice to see someone who takes pride in doing a good job. Only thing I think you might need to consider is RPMs. That drive shaft from a VW is likely not rated for any more than about 2000rpm and I've just looked at SKF bearings in those oval housings (not sure what you've used but I cant see it being better than SKF) and for a 20mm ID they're only rated for 8500 max RPM. Some problems to chew over... Maybe fine for occasional use but I think they'll become headaches if left unaddressed. All the best!

[@hirschkuh4687]

You are right with the bearings. But i think that the driveshaft could be fine, because it wont have to take a lot of torque. Spinning way faster, but less load than what it was build for. Anyways, driveshafts and bearings are not very expensive. Worth a try and if it works, it works.

[@LeObsidianCraft]

Normally a jet drive doesn't spin much faster than 8500/9k

[@bradleyj.fortner2203]

This is a cool project. I watch a lot of videos of people building go-karts, buggies, atv's etc. Hell, I'm subbed to two different channels that are building mini aluminum jet boats right now. But, I think this is cooler than both of those. I'm really looking forward to seeing the finished product.

[@lennym1273]

Vasily and Grind hard plumbing? yea me too...

[@bradleyj.fortner2203]

@@lennym1273 Those are the ones.👍

[@neckcrank2663]

And Cleetus, and boosted boys!

[@sport1349]

Jornt ik heb grote waardering in je werk, buiten gewoon creatief, en wat ben je een groot werktuigkundig talent Ik maak me toch wel zorgen over de geweldige kracht van de motor. Ik kijk uit naar de volgende video en blijf vooral doorgaan met je hoogstaand werk, en met testen blijf voorzichtig.

[@seansysig]

Awesome project! You really should be using epoxy laminated marine plywood beams instead of poplar 2x4’s. Also You really need to use a dial indicators for shaft alignment to measure runout to reduce vibration caused by misalignment.

[@shelbyseelbach9568]

I couldn't believe he just used framing grade 2x4s!

[@theLyzhendricks]

​@@shelbyseelbach9568 send it

[@revchucksantiago9213]

He's probably fiberglassing over it all. It'll be fine

[@meatcreap]

If anyone else tried that frankenstein driveline, I'd be concerned. I have confidence that it will work beautifully for you because you are so talented at making stuff like that magically work!

[@frankierzucekjr]

You definitely have to add the ZZR decal to the jet ski when you're done and painted. This is awesome buddy, this things gonna fly. Be safe, and can't wait for part 4

[@stormchaserkj]

This is part 4!!!

[@jeffjackson6068]

Epic series!! Can't wait to see it on the water with the engine

[@Andrew_From_NB]

Your videos are by far some of the very best build videos I’ve seen! Found your channel recently an honestly, I am amazed at your work! Really enjoy your work on your channel and definitely one of my top ones that I follow now! Anyways can’t wait for the next one! Cheers and take care! From NB Canada

[@akio2589]

You might make sure that the oiling system for that engine is up to snuff. You may have to add/reposition baffles in the oil pan, the engine will be tilting in directions it wasn't necessarily meant to in that configuration. Also, think about putting a system in where oil changes can be done without removing the engine, or reaching underneath it. An easy solution for both is to use a dry sump system. You may also think about using a heat exchanger for cooling, as opposed to just letting the water from the lake/river/ocean/etc. run through it. This engine doesn't really have anything (anodes, coatings, etc.) to save it from corrosion. Other than that, keep up the good work.

[@bertfransman9864]

Yeah, I was thinking exactly the same after watching Superfastmatt who had the same issues in his motorcycle engine mounted in that tiny Honda. I can imagine the issues will be much greater on a jetski, which is a lot less stable to say the least.

[@akio2589]

@@bertfransman9864 Which is why a dry sump would probably be the best way to go. running angle doesn't really matter. The carbs might be angry about it, though.

[@jetink600]

Oiling is always something major to consider when swapping motorcycle engines into non motorcycle vehicles

[@akio2589]

@@jetink600 Unless you can mount them transversely as they're meant to be. For inline engines, anyway. Not usually the case, however.

[@jetink600]

@@akio2589 true, and even then i would still be mindful

[@SpiderF27]

Man you're ingenious. We need more people like you!

[@onlyengineering6564]

Your engineering skills are next level

[@JamesSmith-op7yc]

I think it's excellent! Outstanding sleeves up, dirty hands engineering! This is the way things get accomplished. Thanks for sharing, love it! J.

[@Mad.Man.Marine]

Nice work man!! I build one off custom boats for a living. I’ve always wanted to build my own type of jet ski out of aluminum just because a can lol. I’ve had plenty of name brand jerskis over the years but there’s something about building one from scratch that has always interested me. Keep it up!!

[@haiqiwei2252]

WOW， amazing work, you are really perfessional mechanic, so brilliant.

[@wags9777]

Yes that is exactly how you know an engine is good..... must rev it constantly and race it the second you start it. You sir have a perfect beginning of a 1200cc boat anchor.

[@FJ80Coop]

Make certain to add some plates below those wood runners where your engine mounts bolt through it,otherwise you gonna have some loose bolts issues very quickly... Blue loctite is your friend also... Great idea on how to couple the engines output shaft to the jet drive..

[@gunthertv0007]

This is MADNESS! LOVE IT! from Philippines

[@sid-craftbuilder675]

Refreshing to see a young man with talent, good for you. Enjoy your vids.

[@jeroengoedknegt5972]

Heerlijke video om te zien! Puur genieten. Heel erg benieuwd naar het resultaat!!

[@yewwtooob]

Fantastic build. All of the people questioning the integrity of wood forgot about Viking ships that sailed all over the world. After epoxy and matt fibers it will be strong and water proof but still retain the vibration dampening and flexibility. Very cool.

[@yewwtooob]

Only thing I would keep in mind is that those CV joints are designed for heavy loads at low rpm. @60MPH with 2 foot tyres would have the shafts spinning less than 1000RPM. That's why you never se a welded on balance weight on them like a driveshaft( which is closer to 4K RPM and has a wider orbital path. 12.000 RPM would show any balance problems. If you have rebuilt these you know that they are fairly brittle with slotted cages and 6 ball bearings. Before you use it I would add an all around guard just in case it lets go. Your boat hull is below, and your crotch is above, lol. Be safe. Have fun!!

[@olegloginov2953]

Well designed and executed. You definitely learned from your mistakes on the boat. Cant wait to see it run!

[@TheRandomManiacs]

Your builds are getting better and better! Keep it up! Curious to see it fly!

[@juggernautz]

Awesome engine mounting design with some problem solving that's impressive. Most aim for a direct drive to the impeller but you did one better with a design for any engine, with the right tools helps, lol. Or skilled shop! I hope you sell these designs too so we all look forward to future videos & to see this bad boy burnup the water!!! The engine mount frame is user friendly for several different motor/tranny setups.

[@Marwenstrom]

Yes!! Love these!. So inspirational!

[@4G63Tpower]

Looks awesome, metal scatter shield may not be a bad idea.

[@homemade_madness]

Yep, for sure!

[@daan3298]

@@homemade_madness dacht ik ook ja, metalen tunnel om je edele delen te beschermen kan geen kwaad, me dunkt 🙂

[@1234tera]

@@homemade_madness Please answer me on your web site .I sent you please

[@1234tera]

@@homemade_madness Please check your web site comments I sent you a message

[@bobbyh177]

the amount of stuff you can do alone is amazing man! Very Brilliant individual!

[@kazanboiracing952]

very interesting, thanks for showing the progress. hope the next part comes soon

[@reviewsjustcuz1437]

I was so happy to get this notification and watch this lol.

[@sawer]

I have nothing to say that has not been said in the comments here, just doing my part in helping the algorythm cause this deserves all the views it can get. Amazing work man :)

[@coldrolledcreations6661]

Phenomenal work man. This thing is gonna be sweet!!

[@miniRILLO]

That's BA. Can't wait for the next one

[@haydensuperville1967]

Masterful work Young Fella.....Pure Genius

[@vassdalencustom8689]

Love your channel! Great fanrication skills! 😎 Its good to see i am not the only one using too much time in the garage on crazy ideas! Keep up the good work Greeatings from Norway 😄

[@dukie1616]

This is such a good channel doing serious builds. You asked what do we think. Well for me I think it’s outstanding👏

[@craigmonteforte1478]

i like your idea and OverallConcept i began riding PersonalWatercraft in the late 1970s then continued buying new machines into the 19990s i always thought it would be kind of cool to have some type of Transmission on the drive system once the Manufacturers started installing Engines at 1000 Cc and larger BTW i have ridden a lot of Motorcycles as well and i liked controlling the speed of my bikes through the gear boxes instead ofthe brake systems because it gav yu the ability to Power out a turn

[@hammerfix7241]

inspiring stuff again from the young master!

[@tylerwatts1004]

Nice progress. I recommend you put a bolt tensioner on the belt drive as those slots will slip and lose tension. It's a 160bhp engine with gearing reduction remember... Also I would not have kept the gearing personally, just used the belt reduction. And I hope the engine is not too far back for weight distribution. I'm sure it is similar to the jetski but that's a small engine and large hull compared to the jetskis themselves. I hope it works great.

[@ianbuilds7712]

If you've never done the old two handed knee vice trick you're just not a real homemade madman

[@homemade_madness]

🤣

[@EngineeredToDesign]

That’s great stuff! Man it’ll have some power. The belt drive tensioners may need a locking bolt to stop them from twisting loose with the amount of torque that engine will have, same thing happened on my golf cart jackshaft..

[@mahdiabdeljebbar9695]

I thought of so too. With big engine

[@thecurrentthing.6289]

THE BEST diy jet-ski ever seen! is loading

[@elrebelde215]

U doing good my friend you are a very smart man keep doing what u think is best n never let no one tell you that you can't do it I want to see it when you finish grate job 👍🏽👍🏽

[@levfurtado32]

Cool stuff man, very inspirational.

[@giovannipicchiotti572]

In the next vídeo, please consider to explain the details about how you make this engine works properly, such as the electric system and the carburador! You are the man!

[@homemade_madness]

Next video, thanks!

[@firepinto]

I like the sprocket adapter, pretty cool!

[@joshuahale8621]

I like 1200 and the price is affordable to the others but the frame and plastics are only something a mother could love. love the fabrication and swap inspires me to want to get my money right and dream big as well. With the right knowledge and skill anything can be made

[@gca259]

Enjoying the project - thanks for the excellent content. As the engine/water jet are mounted separately the belt drive between the two is a seriously weak point given the rpm/power it will have to deal with. In performance boats, alignment of the engine and propeller shaft is critical. If cv joints/belts were a good way to go I imagine Yamaha, etc would have done it... Anyway, hope I'm proved wrong! 🙂

[@kennyschopperz]

Listen, yamaha did a gear reduction ski in the MR1 platform, but you sir, are making this your own....ANNNND I AM HERE FOR IT!!!!

[@spyridonbaxevanis6479]

Awesome video again! I am really looking forward for the next one every time!

[@turnnburns9110]

I found your channel when you released part 1. YOU MY FRIEND do not disappoint!! WELL DEONE !!

[@RoccoBob]

love the yet ski videos :P

[@SWEET-2381]

Dude u have such awesome ideas!! Very talented!!

[@lukeweetman8197]

Love this video series, and making me plan to build my own using your plans, a few questions I do have from watching so far 1) how are you going to join the 2 halves of the jetski body together and 2) once the two halves are joined how will you access the engine to service it

[@MattGratt]

Really impressive creativity and skills.

[@mxrider2strokebraaap54]

Awesome video😁 looking forward to the next one!👌

[@DaniloBomfim]

New fan! I love the way some guys create those kind of things in the garage! Some time that makes us look like complete useless men, inspire us to do the same! 😄😄😄

[@nordiccitizen]

Now that you have taken out the engine, that would be an awesome project for making an electric bike :D

[@matthewf1979]

Pinch that belt around the prop shaft pulley with a couple of roller tensioners. There’s a tremendous amount of force on the prop shaft and it may slip in the current configuration.

[@OceanicGyogō]

I was hoping you were going to give the bike a one final goodbye burnout before turning it into a jet ski the moment you brought it into your shop lol 💨 😂

[@stephencocks5373]

Awesome project, keep up the great work!!

[@kadettsr1977]

Komen der nog video's... vind het altijd wel.mooi om te volgen

[@jellanadolfovlogs1070]

Can't wait to see the performance of your creations

[@sport1349]

Jornt 150.000, Proficiat en op naar de 200.000 abonnees dit jaar nog.

[@ABCustoms]

Mooi werk weer! Heel bekend motorblok! Zit ook in de trekker✔️ Ik zie nog wel wat uitdagingen voor verderop in de bouw zoals de uitlaat die heel dicht langs het hout moet komen. De rvs bochten van mijn uitlaat waren met 1 minuut blauw van de hitte. Ook hoop ik dat bij vol gas varen en springen (lees 170 pk op de aandrijflijn, dan springen en weer in het water landen) het hele motorblok of de aandrijflijn eruit gerukt wordt. Maar dat zal je uitvoerig gaan testen, daar twijfel ik niet aan! Mooi project, hoge bouw kwaliteit en engineering👌🏻🔥

[@mikekeenan9910]

looks good! i had a car engine (4age) direct drive with some car cvs, (around 7-9k rpm max) it needed high speed cv boots or at high speed the boots turned into pancakes and pushed out all the grease everywhere!

[@davidsch6490]

Love this build 🔥

[@JuPac420]

So glad I stumbled across this channel. Looking forward to the next video, and as usual, great work!

[@Cholton222]

It will work. I love how u use pretty much hand tools to build stuff. Except the lathe. But yes I would use belt over chain. Chain if it broke would blow a hole through the hull, that would be bad. So belt is way better. Gearing on engine you will put it in 6th and leave it there, that's my prediction. Bsafe dude. Love the build

[@kendexter]

Nicely made.. love it

[@martinangeltorreschoque5398]

Excelente conocimiento que aportas profesor es tan bueno el video que provoca verlo más de dos veces para no perderme de ningun detalle me encantó 💕 👌 👍 👏

[@lightscrafts]

You are so talented! Awsome work! Fun to watch 😃

[@kulebyakinjoe]

The idea is certainly interesting, I'd like to see how it works on the water

[@wadesta1986]

One suggestion, build a loop around that driveshaft. There are a couple of different failure points in it now, and that last thing you need is a snapped drive shaft trying to send you into a low earth orbit

[@ammonabasanta7796]

Cool project!

[@blairstonehouse]

Amazing work, as always. I believe that drive shaft will definitely work. But do you think it might vibrate? You did a great job of doing what you did, but surely it cant be perfectly balanced after all the welding.

[@turnnburns9110]

I cant wait to see the final video!!

[@Farmfield]

There's no shame in being killed by an awesome machine you built. Well, unless it's a rocket and you only built it to prove the earth was flat. 😂

[@flintlock_glockTJR]

Welp. This comment just won the internet today.

[@Ruzwa]

If you're hinting on the rocket guy in the us, he was just using flat earth society for the money to build his rocket. Pretty smart if you ask me. The result was not however....

[@MatthewHolevinski]

@@Ruzwa I agree. It's a rare bird out there who has the nuts and conviction to do something life threatening without 9,001 safety monkeys beating their clipboards at them. As far as this Kansas boy is concerned I should be so god damn lucky to die the way I want to. Maybe other people should keep their traps shut until they walk a mile in another man's shoes.

[@STAY-GOLD-VINYL]

More then😢 you and your offspring will ever accomplish

[@Farmfield]

@@STAY-GOLD-VINYL Lol, sounds like projection. I can actually do everything in this video series accept mess with the motor - never messed with engines, only gear boxes, but I could even do a molded hull in composites instead of plywood. So yeah, troll along. 😜 [insert Mad Max Fury Road mediocre-meme gif here]

[@rayrayadkins6178]

I a Yamaha WaveRunner and I have a Polaris 250 2 stroke Air and seeing you doing this I want to make mine

[@roadboogalabuilds5318]

Awsome job as always, wow has your subscribers base been climbing good for you congrats 👍🏻

[@mansbfishing]

I'm waiting for the next video... Good job bossku 👍🏻 👍🏻 👍🏻

[@johnholmes6897]

Fuel injection will shrink things down some I'm extremely impressed. It's a rare thing these days

[@tonythorne4623]

Great job I would be concerned about the amount of power you are putting through that rubber belt considering contact is minimal through the teeth on the pulleys. But you have a great skill. Could you fit a safety loop over the drive shaft in case it becomes detached. Great videos keep them coming.

[@Hellsong89]

Least its the first thing to go when something gives out and yeah drive shaft can over time create tress cracks from the vibrations and give out, slamming into hull, so that needs to be addressed asap. I kinda like the belt idea for the quiet operation compared to chains, but it will be nightmare to swap while on water when it eventually snaps due age or just power going trough it.

[@fridder.]

KZbin sucks at doing series.... It'd be very helpful to link part 5 Really cool series btw this is amazing

[@dogyerf21]

Cool build, seriously should rethink that driveshaft, it’s going to vibrate like crazy.

[@RicardoTeixeiraCarromeu]

Nice job kid, really 👍🏻

[@agusjunaidi1991]

This dude is Dope, let's subscribe Can't wait for the next video

[@latunguley]

One other thing is I wish we could put our skills together. I've been fabricating over 30 years and extensively worked with Aluminum over the years as well as Stainless and carbon steel.

[@jeroenjager]

Fantastisch werk!!

[@kidsfuntoys641]

Good job,👍

[@sail4life]

Beautiful job!

[@larry-ev5sw]

looks good ..... dutch people from america

[@mansbfishing]

Wauuuu😳😳😳very nice... Good job bossku 👍🏻 👍🏻 👍🏻 👍🏻 👍🏻... 🤝🙏

[@OzBull]

Very clever and clean build. I think the driveshaft at high rpm might be an issue but we'll see by the way great video.

[@Pippy626]

Love the video! I would consider adding a guard or bracket over the belt to hold the 2 sides of the belt holder on the top looks like it wobbly

[@Hellsong89]

I would be more worried about hack job drive shaft witch if snapped in any kind of speed would slam hole in the hull, though belt drive there works as mechanical fuse so thankfully it wont wreck everything if pump jams from debris, but replacing the belt will be big issue if you are on the water and it snaps, so he might want to add paddle holder into the frame as back up method, hell places and storage for oars might be good idea.

[@Pippy626]

@@Hellsong89 you are right a drive shaft loop too maybe in this case a steel sleeve (cut in half metal tube) Incase welds fail

[@hunatikenshi7196]

Niceeee Watching And Supporting From Philippines

[@BrainCellular]

You should take the frame and forks of that bike and make an electric street fighter motorcycle!!

[@DktheWelder]

Very cool looks stronger than what I’m building for mine but you do have double the power ! You do a great job it should handle the power no worries

[@thestreets5206]

In all honesty, I would have put a sleeve over the joint on the driveshaft that you welded , and also beef up the structure that the cv joint goes into , there will be massive torque loads on the area . Otherwise top work as always 👏 👌 👍

[@homemade_madness]

Will do thanks👊🏻

[@thestreets5206]

@@homemade_madness I did a similar thing before and the weld would keep shearing off , so I put a chrome vanadium socket over the welded join and welded that in place , it's never failed since 400+hp 😉 👍👍👍

[@normanwray1341]

Thank you for your.method wonderful conversion kits 😅😊