r/Pitbike

everytime like 20 kicks the bike turns on it stays on for a little bit while revving super high, and then shuts off after 5-10 seconds of revving itself, even when i try to give it throttle it just bogs and sounds like its dying i used this same carb on another bike and it ran perfectly fine so it doesnt need tuning

thats the bolt to my manifold to where i put on the carb, it screws in perfectly but theres a little gap on the side even when its fully tightened, i havent rode in 6 weeks, tried multiple spark plugs, tried 2 different wiring harnesses. and every time i kick it over it sounds like its about to start but just gives a tiny pop and shuts off

Still have alottttttttt of work to do but it’s together and it’s “rideable” lol. Brakes on the way, going 13-49 on gearing. Motors out an old twinstar 250.

What do yall think ?

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It's actually a 250cc dirt bike converted into a pit bike—fitted with street wheels, upgraded brakes, and a quieter exhaust. I plan to ride it on Supermoto and go-kart tracks. It makes for excellent training! 😁

Check out the cnc frame. It's needs lots of love. But it should be pretty nice when we are done with it...

I was taking the screw out because I needed to adjust the lash and it had fell into the valve I’m pointing at. I tried to get it out, but I just knocked it deeper. I can’t find the screw anywhere. And I don’t know what to do. also, now that we are on the topic of setting the lash I was also wondering if anybody had any tips because I have all the tools and I found top that center, but no matter what it either has too much or too little compression and I do not want to hear that the exhaust or set the intake to blah blah blah because no matter what I set it to it will not work. It will get to the point where it’s not even loose yet it still has too much compression.

I have a 2026 crf110
I've read in a few places that they are prone to oil starvation when doing wheelies or hill climbs because the oil pick up is too far forward in the case.
I've ordered an oil pump kit that bypasses the oem pick up and uses a plastic tube to pick oil up from further back in the case.
Currently this is the only kit available online.
Seems obvious that even intermittent oil starvation will drastically reduce engine life.

I have a few questions:

has anyone running a standard pick up noticed
premature engine wear/failure?

has anyone else used the plastic tube oil pump kit? reviews??

has anyone managed to mod the original oil pump to do the same thing? Using an aluminium tube like the beardopumps kit (out of stock at the moment).

is there another work around? like running a larger volume of oil without causing any other issues?

thoughts on bypassing the mesh screen for the oem pickup? like all of these oil pump mods do.

Any input would be greatly appreciated.
It would be awesome to get some consistent evidence and advice from anyone familiar with these bikes.

I was thinking on buying dont know brand and model name Please help thanks

Here's a look at the mods I've done to my 250... I'm really curious to see how it handles. Tomorrow, we're hitting the go-kart track!

I got this adjustable rev limit cdi for my bike and it will only work when I put the dip buttons in any of the “racing mode” configurations (see 2nd picture)

Whenever I try to put it on one of the rev limiter modes it just sputters and backfires when I try to start it. Anyone know how to fix that?

Also does anyone know if it still has a rev limiter in “racing mode” maybe it’s just a lot higher like 10k rpm’s or something? Thanks.

Hi, I've been working on this Coolster QG 214S and had it running for a while, then it blew the CDI box (which is what was wrong with it when it came to me). The voltage regulator for these seems to be 4 pin but there's no 4 pin plug on the harness. There's a 5 pin that's empty that goes to this odd little circular plug above the front sprocket. Is that where the voltage regulator is supposed to go on these? If so, anyone have a part number or anything?

Bought a second hand Atomix 50cx motorbike for my son in poor condition. It’s meant to be a clone of the PW50 bikes, so bought the front forks online. Just wondering if I can get something to fill this gap here to that I can tighten the head stem, like a spacer? Or just go and hunt the correct front forks?

Thanks in advance.