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49cc mini moto upgrade


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what is the best size sproket to have on my racing mini moto


im doing it up


it has a 6 tooth on fromt


what size should i use on back



also can i take to head off and clean it and piston with out damagng timing or anything


im thick i now any help apreciated

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what is the best size sproket to have on my racing mini moto


im doing it up


it has a 6 tooth on fromt


what size should i use on back



also can i take to head off and clean it and piston with out damagng timing or anything


im thick i now any help apreciated

 

dont be putting yourself down now, if you dont know what to do that certainley dont class you as thick :)

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Surely you've got the old sprocket, in which case I'd keep it the same, but if you go with fewer teeth on the back it'll increase top end (as long as it has enough power) but reduce acceleration, and the opposite if it has more teeth on the back.

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i no what to do just ant got clue about sprokets:L


cheers


i wqas selling and still will if someone can pick up from west yorkshire for 30 pound

 

Don't go down to a 1-tooth sproket. That will not work at all!


Seriously though, keep the old one on and adjust for chain tension.


And yes, you can remove the head, barrel and Piston without altering the timing - When you lift the head off, paint (using a coloured nail varnish is good) any chain / cog tooth meeting points so you can align these on re-assembly. Lift barrell sligtly and insert a rag all around gap, then when you pull the barrell off the piston, nothing will be damaged as it 'flops over'. For re-assembly, carefully position the barrell on the end of the piston and lower as far as the 1st ring, ease the ring in by squeezing the ring and sliding the piston up the barrell - same for all other rings. Don't forget to replace all gaskets and apply correct torque to all studs / bolts.


Good luck.

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