Start my removing all the extra stuff of the bike that you really don't need like side covers and two stroke oil tank, lights etc. remove the air filter box and find a cheep filter to stick straight onto the carby. mix up your own two stroke fuel 30:1 petrol to oil. As a couple of the guys have said you need to crank up the compression, the bet way i've found to do this is to tape a sheet of fine wet and dry sandpaper to a peace of glass (supplies a very flat surface) + water and slow mover the head around in figure 8's. you also might think about removing one of the piston rings (reduces friction and give's you a spareOriginally Posted by speights_bud
you will need it). you might also need to sort out the front brakes and forks. Forks - well for a A100 drain them (by undoing the bolts on the top) and measure out how much is in each one. then try and find some oil that is thicker - 10-50 weight etc. (not really the best but it a A100 anyway), - this will sort out the damping now you want to sort out the rebound, see those lovely external springs you need to compress them a bit, (drop them out of the triple clamps) and get someone in your class to make some large washers to fit over the forks and hold the springs(under the bottom triple clamp), if you make a number of these them you can add and remove until you feel the forks rebounding to what you feel is good. as for a expansion chamber find yourself any thing off a mx bike that you butcher. think about changing the gearing to faster top end (slow acc) more teeth on the front and less on the back; or less top end (get there quicker - more ideal for buckets.) less teeth on the front more on the back
good luck i had a ball racing buckets at your age - be the next John Britton.
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