I just picked this bike up for $50 it needed a front sprocket and chain and the swingarm bushings were shot but the engine runs and sounds great. I'm trying to figure out what size and make the engine is the serial is 139FMA. Also what size front sprocket should be put on this? The rear is a 37 tooth. Thanks alot!
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my67xr
Miniriders Legend and Master Spanner Spinning Mode
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i am guessing it's a Loncin 50cc ?
it should be in the casting on the head or barrel somewhere
the bike looks like it's based on a CRF50 Honda, but as the pic is so large i can't get a clear look at it.
cheers, craig
make sure you drip in to our Introduce Yourself thread and say hello while you're here.
i am guessing it's a Loncin 50cc ?
it should be in the casting on the head or barrel somewhere
the bike looks like it's based on a CRF50 Honda, but as the pic is so large i can't get a clear look at it.
cheers, craig
gottagetacheaperhobby
Moderator
definitely another crf50 clone. make sure you order the right pitch sprocket and chain, could be a 420 or 428. being the smaller engine id say a 420 but the 72cc atomik i was playing around with had a 428 on it... dont reckon you would want any bigger than a 15 tooth front sprocket, maybe even a 14 tooth depending if you want more top speed or quicker pick up..
