Re: tuning 20mm VM Mikuni carburetor

A Fouler Fowler /
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so i just took my moped on its maiden voyage. Runs great once its warmed up.

things i noticed:

WOT at idle very slow = die

once above like 10 mph, no bogging, no stalling

3/4 throttle produces the same top speed as WOT, only difference being the engine sounds a little different (the "more throttle but not faster" lower frequency sound)

i did some sudo plug chops while i was out. Spark plug went from black and shiny(at idle) to a nice chocolate brown (at WOT). soon as my box o plugs gets here i'll do real ones.

on level ground, it averages 38 mph at WOT, sometimes faster when the throttle was at 3/4. topped out at 42mph going down a small hill

I'm pretty sure there's an exhaust leak on the head at the muffler. always leaves a little (non dripping) oil spot just below there

speed measured with a cyclo-computer, not sure how accurate it is. Its the type that you set the diameter of the wheel its measuring

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