ROTARY POWERED SHIFTER KART Returns!!! Major Upgrades!

Exhaust: amzn.to/3qBTJLD (amazon associate link)
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One of our most popular builds has returned! The Rotary shifter kart (powered by a Hercules W2000 wankel motor) had been in storage since the last video we did with it of hitting the top speed. The clutch had failed at the end of the video due to the clutch pushrod welding itself to the ball bearings and eating through the lever arm. We had found a hydraulic clutch on ebay for a Harley that had the same size diameter for the pushrod, and it ended up working better than we expected! We also changed the gearing to get us some better top speed!
Thanks for watching, stay safe and stay tuned for the next video!
*Be sure to check your local laws before driving any non-registered motorized vehicle. Do not attempt these activities at home. All content produced by Build Break Repeat is for entertainment purposes only*
-----------MERCH------------
MERCHANDISE CUSTOM DESIGNED BY YOURS TRULY
teespring.com/stores/build-br...
--------------TOOLS------------
Texas Metalworks 40x80 Welding Table
texasmetalworks.com/product/f...
RogueFab Tubing Notcher
www.roguefab.com/product/vers...
Pro-tools Tubing Bender
pro-tools.com/collections/tub...
Optrel Crystal 2.0 Welding Mask
usa.optrel.com/en/eye_protect...
Optrel Grinding Mask
usa.optrel.com/en/products/au...
---------MUSIC --------
Music - Background and Montage Music Is From Endemic Sounds
www.epidemicsound.com/
Intro Song - Jimmi by Andrew Applepie
• Andrew Applepie - Jimmi
Montage Music - Lakey Inspired
/ @lakeyinspired
------------PARTS--------------
DG Aluminum Silencer - www.dgperformance.com/motorcyc...
Seat - www.gopowersports.com/12-volt...
Battery - www.gopowersports.com/12-volt...
Axle - www.gopowersports.com/axle-54...
Bearings - www.gopowersports.com/3-hole-...
Rear Wheel Hubs - www.gopowersports.com/1-hub-d...
Front Wheel Hubs - www.gopowersports.com/front-h...
Brake Disk - www.gopowersports.com/8-brake...
Sprocket Hub - www.gopowersports.com/1-bore-...
50 Chain - www.gopowersports.com/150cc-d...
Tie Rods - www.gopowersports.com/tie-rod...
Rear Wheels - www.gopowersports.com/6-x-8-5...
Front Wheels - www.gopowersports.com/6-x-6-5...
Rear Tires - www.gopowersports.com/11-5-x-...
Front Tires - www.gopowersports.com/11-x-6-...

[@rydplrs71]

The rotary just sounds so good in this application

[@qwertyximan]

There are only a few engines that sound good. Like this wankel and nitromethanol V8

[@iamincrediblystupidbut4364]

@@qwertyximan no

[@-redacted-7716]

@@iamincrediblystupidbut4364 no?

[@ducovandervelden3633]

So true

[@jacques8646]

Lmao glad to here I’m not the only one that thinks so

[@thegiantgaming7592]

This is definitely the sickest shifter cart on earth

[@s1ckksn0w]

Yeah I don’t think my old 250cc 2 stroke homemade kart could even top this thing

[@winstonpratt604]

Most def

[@sbeve9820]

as a rotor head. I agree

[@andrewjohnson442]

What about the ducarty you think it'll hold up if it was working

[@s1ckksn0w]

@@andrewjohnson442 it would probably twist the chassis again unless they reinforced the frame a lot, would be a good contender tho

[@inspireonex]

Dan: "I think this will work." It works. Also Dan: " I never thought this would work."

[@BuildBreakRepeat]

Dan is a man of contradictions

[@Mattmazz77]

Lmfao 🤣

[@joshuajones3652]

This is by far my favorite of y’all’s projects

[@geoffreyjones2000]

Great build guys... A Cleetus fella has a track, sir

[@Snugglez187]

Definitely take it to The Freedom Factory. There's tons of space there, and Jeremy is a go kart guy too, so maybe you could get a 3 way collab going with Cleetus and Faster Proms. 🤷‍♂️

[@bearrett50kal17]

@@Snugglez187 Oh dude Jeremy would nerd the hell out over this thing, I'd love to see that!!!

[@John_Makes]

whoaah all that flamespitting and rotary noises are just too awesome, guys!

[@lizzard7473]

Get in touch with the freedom factory. I'm sure they would love to see it too.

[@InsideOfMyOwnMind]

Bring extra tires. Massive burnouts required.

[@fredericrike5974]

Yeah, dudes, reach out to Cleetus McFarland- he has an oval track he calls the Freedom Factory for a playground in Florida. Good weather this time of year! Hope your class scheds will flex- know even college has been a lot of "holding time " lately. Cleet should be finishing up a track resurface by now or will soon.

[@msengineeringdavid3148]

No

[@performancebuilds1323]

That clutch bearing is cooking itself because you have tension on it when you're not using the clutch. Just like on a motorcycle you always have a little slack in the clutch lever.

[@justinsolomon4427]

?what's free play.... lol. Definitely get worn in fast on the tight side.

[@performancebuilds1323]

@@justinsolomon4427 if your cable is tight it will cook that bearing. Just like on a car the throw bearing has air gap to the clutch pressure plate when not depressed.

[@justinsolomon4427]

Correct, which will also possibly lead to failure of the clutch or friction plates

[@performancebuilds1323]

@@justinsolomon4427 100%.

[@RonnieMacJr69]

Usually on a motorcycle if the clutch cable doesn’t have a tiny bit of slack your probably actually slipping the clutch even when you think it’s fully engaged

[@justinyates1154]

By far my favorite kart you guys have built, keep up the great work and keep building this kart better and better

[@Luminaring]

The engine seems like it's running a little too lean, with the missing and blue flames. Could put an O2 sensor mount in the exhaust before the muffler to get some mixture measurements as you tune the carb. Tuning a carb is just make changes and see if it's better or worst.

[@dereksumstad6746]

wouldn't flames out of the exhaust mean it's running rich? there's excess fuel that's not been burnt in the exhaust.

[@Luminaring]

@@dereksumstad6746 The blue color is the concern for me. In a piston engine, a rich back fire has yellow in it. Now, I do know rotary exhaust temps are way higher than piston engine...so maybe a rotary running rich is Blue and not yellowish. We tune 2 strokes carbs by soldering the jet closed and drilling few to the next size bigger or smaller till it 'felt' better. Just my 2 cents.

[@spingel88]

30HP never looked or SOUNDED so awesome.

[@rob5598]

The paint scheme even looks like a 787B. 😎👍badass

[@bryduhbikeguy]

That is just so Awesome!!'She's a Ripper'! I'd love to see you each get a couple 1/4 mile times.

[@reelsteel8979]

it sounds so happy with the regear

[@carnivorecave]

Its fun building stuff, the bad part is finding a place to let our projects run freely. East Texas here and no where to ride either.

[@walkermediaworx]

Keep it, can't wait to see it on an air strip or big parking lot.

[@mercermechanics1788]

The best rotary kart I ever seen, love the refresh !

[@SenisterBuilt]

Ive been following since the beginning and love the rotary cart i think the most

[@alexcatto1432]

It would be good to take it to a go-kart circuit to see what it can really do. I love 787b's and go-karts so this is really cool.

[@TrikitrikiMan]

It sounds like the gatling gun of the A10 thunderbolt. EPIC.

[@DanITGuy]

LOL you never know what will work until you try! Nicely Done Guys!! I would suggest figuring out a metal spacer like maybe some Black Pipe cut to fit with a couple exhaust flanges welded on each end to keep it from flexing at all but other than that the Hydraulic cylinder you chose seems to work like a charm!! That thing RIPS!!

[@berth7843]

That' crazy! Hope to see you on track!

[@xracerz9961]

Never saw a go kart spit fire before

[@paulhall170]

Outstanding, I can't tell you how much I enjoyed that, especially the Allen Millyard-type fabrication stuff. No doubt I goes, I'd love to see it opened up on a track. Well done, boys!

[@sayan1667]

I was talking with my brothar about rotary engine on a motorsport chassis Kart-Car. I said to him: -Man...I'm gonna look in KZbin to see if somebody has already done it. Oh, boy... I respect you!

[@Bigalinjapan]

Gotta love the authentic paint job!

[@Thewatson77]

Hell yeah! I love the rotary builds that y’all do 👍🏼🙌🏻

[@TheFrozenDesert]

I hope you guys get a TIG welder soon. The work adapting that hydraulic fitting was really creative and it was amazing you got it done with a MIG. Another great one.

[@BuildBreakRepeat]

Yep, working on picking one up and learning! thanks for watching

[@arrivendrive6831]

My 14 year old son races a OTK ROK 125cc and it is very fast. I would love to see this rotary kart up against it. We run C12 and I am sure the rotary would be faster running this fuel as well. I know there is a lot more power that can be had from that rotary. I would love to see you guys continue to fine tune it for more power. The right carburation helps a lot also

[@Zantrop64]

Wow that low raspy sound 💜

[@thejman3489]

The rotary kart is my favorite build from you guys! Glad you are working on it again! Also I like how the intro was you guys getting out the project you are working in the video. It gave us a really good shot of the build. Sort of cinematic looking.

[@catfishbilly9827]

Y'all can get wayyyy higher in the rpms with that rotary

[@phoenixeragon6404]

I was just thinking that it sounded like it wasn't getting to stretch it's legs

[@PHUSII]

older rotaries are not that high revving than the newer ones

[@shaynegadsden]

@@PHUSII that motor should hit peak power around 6000 rpm from factory they definitely aren't revving it hard enough

[@Finnyzation]

It hasnt been run in a while so just cleaning it out next vid we will see higher revs

[@RX-8GT]

@@shaynegadsden yup, it definitely has more in it, just waiting until they press that has pedal

[@hawaikitauru6049]

That 787 paint job looks tufff👌

[@klegraefe]

Good shit guys!! I back you up 💯 percent on welding that banjo bolt!!! Ive done similar but with power steering lines where i had to cut and shorten lines. Keep up the good work!

[@NOTTApro142]

It spitting purple flames is sick.

[@VWLivin]

We gotta see this beast go flat out. Soooo good!

[@floatncoffee]

Love the sound of that thing!

[@stephensuverison6803]

Wow that exhaust note sounds good!😎

[@ianellithorpe5918]

It sounds and looks like it's running great congrats guys

[@1981dasimpson]

if they are welding together you do not have enough play in the clutch lever they should only touch when the clutch peddle is pressed to disengage power the rest of the time they should not be touching the bearing

[@ciello___8307]

Love the clutch solutions!

[@stevenlatre7934]

That thing sounds gnarly!

[@Keleigh3000]

It was really fun watching this project come together. The asymmetrical design makes me think of the STP turbine car driven by Parnelli Jones at the 1967 Indy 500. I hope you find somewhere this cart can stretch its legs.

[@dirtyd2316]

That thing rips and looks like it’s fun to drive

[@drewanderson8279]

My favorite build from you guys!!!!!!

[@JustinDeckardFamilyMan]

Glad to see it back

[@nicolaskohler8571]

Looks amazing Guys👌🏽

[@KaraokeJohn1]

I'm new to your channel, this build is my favorite so far. So glad you took the time to build it right. Would love to see how it performs on a grandpri track where you could really wind it out to its full potential.

[@msal4193]

That go cart looks fun as hell 👍

[@Tampaboys]

Wow it’s sounds amazing

[@braydenmaabadi6463]

The Vargas brothers over at Angel Motorsports need to tap and bridge port this thing

[@msengineeringdavid3148]

No

[@JMKGarage]

Such a sick, one of a kind kart toy build there boys 🙌

[@kepic8979]

Looks awesome and sounds awesome !

[@Nottsmodifiedcarchannel]

Love the mini flames out exhaust 😎

[@maddoxswilliams3033]

As soon as I saw rotary I hit the video😂 I LOVE ROTARYS

[@Draugluin999]

13:05 that sound 👍👍

[@craigkrage2689]

Very Very cool guys. I wanna see this on a real track. Great work.

[@fleuriejeanpierre]

Love wat you guys do, would love to see a turbo on there

[@davesonsadventures474]

Man that thing sounds awesome! 😍 love it

[@thebeastfromthesoutheast7765]

Sounds cool as bro. Good work

[@chillycheeze2207]

That thing would sound friggin amazing opened up on a straight away👌👌

[@hachiroku6727]

That sick ass hell make flames rotary power

[@buildonemore]

found you guys a little while back. love the content! me and my son watch all the time... keep up the good work

[@GwnSerchan]

It sounds so much better then before

[@joshvandruff1790]

That is bad ass! I need one.

[@messyjessy2148]

There is plenty of carting tracks you can take it to here in texas, the one in Winnsboro would definitely let you come out

[@maxsheane]

That’s really cool guys, awesome video 🔥

[@Wik3dNuTS4k]

I remember commenting on every rotary vid for yall to do the 787b livery lol

[@danw1955]

Really glad to see you guys getting the rotary kart back out of mothballs! The hydraulic clutch was a much needed upgrade.. nice work you guys!😁👍

[@Tampaboys]

Heck ya this is so awesome I have got to get one of my hands on those little engines to cool

[@winstonpratt604]

Alot faster than expected brosky's

[@sunshowlu]

Have to Look die an needle bearing Clutch Plate stuff...Happy searching 🙈

[@finnhalewood2419]

this by far my favorite video from you guys , the thing spits flames and sounds so good , you could definitely rev it higher tho get that rotory sequel out of her

[@thatjdmkid8170]

Dopeeee y’all should do more rotary stuff

[@AT_motors]

I remember when you guys had fun doing these projects. Feels more robotic these days.

[@davidtheawesomeone5358]

Yeah, I was wondering what was off, this was it!

[@BuildBreakRepeat]

The new lavalier mics we've been using make it hard to talk excited without being too loud, still working on getting used to it. It'll probably get better with time

[@jmar8094]

I think turboing the rotary shifter cart would be amazing.

[@FunkiesLOL]

I love that sound of the engine and it really nice fast

[@bmxersindwixxertrailersind7981]

I love the flames IT throws

[@Johnwalter1044]

13:04 Holy crap, this scene with the exaust flames in the end! And the noiseeee!!!

[@rusty9959]

You NEED to send this to the track!

[@John-vw4qz]

This is the best cart I've ever seen(so far)...

[@SuperRon]

Sounds fantastic!

[@j.m.5995]

Loving the "Renown" livery. Make it more true to the og for serious style points

[@andrewwalton2648]

That thing is awesome!!

[@tonymunn]

All likes so far. That's awesome. Great video guys.

[@tgafire87]

That thing is badass!

[@diamondthomas7778]

Runs hard 💯💪🔥

[@freddiemoralez1536]

That's the hands down the best kart motor l have ever seen

[@thomasligtenberg4393]

Sounds sick dude ❤👌

[@Hidayatullah1967.]

I can't wait to see him race...✌️

[@bvn650]

Best sounding soulfull motor on 4wheels ever!!!

[@BladSG]

Oh yes, i love this thing, nice job of you guys, i love rotary engines, this is something different for a gocart

[@ikhwanhairiz2092]

That is really cool....subs from Malaysia

[@KingRc72]

That thing just sounds so knarly!!

[@MrThunderCunt]

One of the apex seals may be going bad. It shouldn't spark like that. Only flame.

[@pierre-lucdoiron1325]

it's probably the packing in the exhaust.

[@MrThunderCunt]

@@pierre-lucdoiron1325 or that.

[@connoisseuroftigolbitts]

Did they ever rebuild the engine with new apex seals? Looks and sounds good to me as he is accelerating Lots of compression

[@angelalexander4547]

🔥 I like that motor

[@Draugluin999]

love the 787b colors really cool

[@yotaguy9791]

Let that thing rev up! Don’t shift so soon. Draggggggg it out. Sweet build!

[@davidrensi737]

Bloody knuckles! You guys are the bomb!