Recent content by mark20

i think you might need to up jet the idle circuit, have you tried messing with the mix screw? if you havent try to turn it out or in a turn or two, and see if it improves any. other than up jetting, try cleaning the carb, as there might be some junk in the tank.

sounds like the valves are floating, did you upgrade the valve springs? as stock ones tend to float around 5000rpms. try adding some 18lb valve springs and see if it improves. assumeing its a 196cc clone.

there should be a screw that you can turn in that limits the throttle some, so the engine doesn't rev up as much if not id probably get the lightest spring that you can find to engage the torque converter.

my bad, it was a trek 950 (i dont know why i said marlin:oops:) the diamondback (it was a sorrento) had cracked between the downtube and the bb. ( i hit the double, ended up not having enough speed to clear it, the welded part had landed smake dab onto a rock causing it to crack) i ended up...

well, consider this, what do you want out of the bike? in my experience, id upgrade the tires first, my baja warrior tires were no good on anything past light gravel BUT try out the bike for more then just one month, id say a good 3 months then see what you want to upgrade. a stage one kit...

for the razer, your best bet is a pocket bike motor, it should bolt right on where the eletric motor went. going to cost you about 100$ all said and done (motor + throttle + chain and sprocket) for the pit bike, id use the forks you mentioned on trying on the razer (they wont fit without...

ive snapped my fair share of bike frames (one was a diamondback, the other was a marlin) guess you cant do downhill mountain biking on a xc bike... but anyway, those will be reinforced, i havent done it yet (been busy doing other things) and if i find a set of better tires ill put them on.

ohh, its one of those lol it was probably a electric version, you can swap a pocket bike engine.(get the 50$ ones on ebay, ive had good luck with those ones) just need to drill some holes and it should just bolt into place.

1. no, im too cheap 2. trust me i will, i dont want to ruin the patina 3. i do have brakes on it, its called my feet. :thumbsup:

that bike looks like it had a 50cc or a 70cc on it originally (110s and 125s are taller bikes, they can go around 50mph stock) a 125 should be more thne enough for this bike (the 150s are a longer motor, so you might be hitting the front wheel) looks like a good project, should be a blast!

its 3/16 steel, it should hold up just fine after reinforcing.

Well, though id update this thread I ended up stretching the axle back about 5in. And i added some reinforcement to the headtube Now i just need to reinforce the axle dropouts and add a throttle, then we should be good to go!

Well, ive ran with harbor freight tires before, there ok for around 20mph (this is about the top speed i want without brakes) I ended up getting the 13in ones, there the new one piece design vs the old 2 piece. But i will be checking them everytime i ride (trust me, the head tube on this...

well, i got bit by the small engine bug again, but this time i have the knowledge to do it right (hopefully lol) this is my mini bike frame that i build around a year ago. needs some work, (mainly more frame reinforcing, and i need to tweek the head-tube to make it straight again) it had the...

Figured id update this thread. I gave up on the honda carb and ended up using it on my mini bike, I modifed the original intake adapter for fit this 22mm carb i got off ebay (13$). And it works! heres some pics!