Topic: mini bike / go karts (Read 83786 times)

random-strike · « **Reply #60 on:** May 06, 2025, 04:33:43 PM »

chain tensioner / guide and new chain seemed to do the trick.

random-strike · « **Reply #61 on:** May 06, 2025, 04:35:05 PM »

created an exhaust, muffler is for like a 100cc kids dirtbike.

it sounds great this exhaust setup is awesome

fastivab6tg25mr · « **Reply #62 on:** May 07, 2025, 12:18:21 PM »

lookin good!

92CXyD · « **Reply #63 on:** May 07, 2025, 12:23:22 PM »

You painted the bike frame red then white, why?

These builds make me want to build something this size

random-strike · « **Reply #64 on:** May 07, 2025, 01:16:00 PM »

one is chevy orange and one is white

random-strike · « **Reply #65 on:** May 07, 2025, 02:29:21 PM »

you really should build a mini bike they are fun, they don't have to be fast to be fun but they can be fast..... lol

i guess mini bikes are back in fashion

i people riding them but i haven't been able to meet up with anyone yet

random-strike · « **Reply #66 on:** May 07, 2025, 05:49:56 PM »

welded kickstand on azusa bike

and

chevy orange murica chain guard

random-strike · « **Reply #67 on:** May 10, 2025, 11:43:05 PM »

92CXyD · « **Reply #68 on:** May 13, 2025, 03:37:03 PM »

Looks like a mini biker gang is about to start in your neighborhood, watch out for those Karens out there.

random-strike · « **Reply #69 on:** May 13, 2025, 10:11:48 PM »

Haha yah

random-strike · « **Reply #70 on:** June 16, 2025, 02:41:31 AM »

random-strike · « **Reply #71 on:** June 22, 2025, 02:23:10 PM »

It actually works only hits 8psi at high rpm but usually 6 though midrange

The bov didn't work, it was just leaking air out I had to take it off

fastivab6tg25mr · « **Reply #72 on:** June 23, 2025, 10:40:34 AM »

Thats bad ass! Any videos of how it sounds?

random-strike · « **Reply #73 on:** June 23, 2025, 01:34:38 PM »

the carb really kills the sound out of the turbo but you can hear it a little bit, and a little bit out of the exhaust but nothing really cool.

the "high temp grease" doesn't seem to work for long term, after a while of riding it gets too hot and one of the fins on the compressor or exhaust wheel hits the housing...

im not sure what else i could try to put in it, maybe gear oil? something that can stand the heat.

this turbo also might be a shit one, i guess A LOT of these turbos are bad out of the box. they're like old school CHY NA turbos.

i bought another one same exact one, and might just return this one if the new one doesn't have any problems.

im also thinking about building a built stroker motor that can rev higher and create more exhasut to spin the turbo.

building a motor like these is really cheap honestly probably less than $500 to have a built motor

random-strike · « **Reply #74 on:** June 23, 2025, 06:11:38 PM »

i took the grease out and put in some gear oil and it works better, turbo spins easier and you can hear it now more.

its just a wierd thing because sometimes it'll go up to 8psi sometimes i can't get it to go over 4, not sure. i think maybe this turbo just doesn't work right

i guess we'll see how the new one works not sure.

fastivab6tg25mr · « **Reply #75 on:** June 24, 2025, 12:50:20 PM »

What about using a little standalone sump and pump like a chainsaw bar oiler that runs off the crank. You could use a cheap harley oil cooler as the sump/cooler

random-strike · « **Reply #76 on:** June 24, 2025, 12:56:33 PM »

yeah ive seen people that do that but its kinda a PITA. you have to add a battery too with a little electric pump is what most ppl seem to do.

never thought about a manual pump

it seems like the gear oil is working pretty well

fastivab6tg25mr · « **Reply #77 on:** June 24, 2025, 01:40:13 PM »

Or something like this. Weld a socket on the end of the shaft coupler and put it on the crank bolt.

https://www.amazon.com/Hand-Drill-Operated-Extractor-Hydraulic/dp/B0DTHCMGKG/ref=sr_1_18?crid=2DIMO3TT8Y8S9&dib=eyJ2IjoiMSJ9.faP3ygwu7S728IU2HAX48GQ6HJKeKS0LlSZRBdNMV43QyqsHlSFjIu8zfbPRIV1UHWZtDq4895aZ-vNm6QZ_jND9jwmsNVxee9fP7rIMlgj0cF5h--3au0h8Pmps3qkJ6fQ2PP1pdYOQRTJT9wnQDS4YNESaaFbEwP_pg2Jmd94tWLCMYTvaguphmA9ynDB-ODeGsM-Rxr-ZULrIXRh9-SGs4JAxhpq8TcRJb45FieUmAk1Jd1azeldAwO5iOJnibv3xw4U8xd2SuT_LjTFE3IoCJeoAmYbhw6h3R41OuM8.5C2ugQu5aM0DSW824_JieTjBWoNnGkH5pH3CWi2CH2E&dib_tag=se&keywords=oil+pump+extractor+drill&qid=1750783891&sprefix=oil+pump+extractor+drill%2Caps%2C179&sr=8-18

random-strike · « **Reply #78 on:** June 24, 2025, 04:20:13 PM »

interested

random-strike · « **Reply #79 on:** June 24, 2025, 10:15:14 PM »

I took the vm22 (one size bigger carb) oh the go kart and put it on the mini bike and it fucking rips! Lol

I guess the carb was too small. It builds over 10psi just free revving on the stand

I haven't fully tested yet, but it actually rips now lol

random-strike · « **Reply #80 on:** June 25, 2025, 04:22:38 AM »

https://youtube.com/shorts/1esLndhBLjQ?si=FYJQmpNW94PjPFp9

92CXyD · « **Reply #81 on:** June 25, 2025, 10:28:27 AM »

Man I want to build something like this, but in my area too many people and they complain if I too much fun building anything.

I guess 2 am rippers are in order!!!

random-strike · « **Reply #82 on:** November 12, 2025, 01:39:51 PM »

the governor arm fell into the case and rear tire got a puncture and the tires were on backorder for months

they finally are available again, so i thought i'd build a pure chinese "built" motor

212 honda gx200 clone
big cam
flat top piston
billet rod
10k rpm flywheel
valve springs & pushrods

should be about 14hp.

im working with the jetting

random-strike · « **Reply #83 on:** November 12, 2025, 02:01:56 PM »

real first start video. i used A LOT of assembly lube so it wouldn't start easy haha

https://www.youtube.com/shorts/0AfrbmXQ4JA

random-strike · « **Reply #84 on:** November 12, 2025, 02:06:31 PM »

im going to build another one and try to resell it on ebay or whatever

the motors are $120 shipped now, and if you buy all chinese parts they are about $150 shipped.

so if i sold for $500 it'd be kinda fun

the tillison performance motors are all way over $1000

fastivab6tg25mr · « **Reply #85 on:** November 13, 2025, 11:26:24 AM »

That's bad ass. 14hp would be crazy fast on that little thing.

random-strike · « **Reply #86 on:** November 13, 2025, 01:31:53 PM »

Quote from: fastivab6tg25mr on November 13, 2025, 11:26:24 AM

That's bad ass. 14hp would be crazy fast on that little thing.

yah, the stock clone motors rev to about 5000rpm iirc

this one revs way higher, i think upper 8k.

i need to regear. once it hits the power band i'm going way too fucking fast lol its barely hitting power and i'm already going about 45mph

MTZ · « **Reply #87 on:** November 13, 2025, 10:31:20 PM »

Quote from: random-strike on November 13, 2025, 01:31:53 PM

Quote from: fastivab6tg25mr on November 13, 2025, 11:26:24 AM
That's bad ass. 14hp would be crazy fast on that little thing.

yah, the stock clone motors rev to about 5000rpm iirc

this one revs way higher, i think upper 8k.

i need to regear. once it hits the power band i'm going way too fucking fast lol its barely hitting power and i'm already going about 45mph

( o Y o )

random-strike · « **Reply #88 on:** November 21, 2025, 03:31:16 PM »

built another motor exactly the same, we'll see if someone buys it

fastivab6tg25mr · « **Reply #89 on:** December 07, 2025, 04:02:28 PM »

that's bad ass

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Author Topic: mini bike / go karts (Read 83786 times)