Scooterotica

Muppet

one side faces the piston the other faces the head when tightened up; differing temperatures allow the burn to ignite more one side of the plug than on the other; if you mark the rich side of the plug you will most likely find it's the side nearest the piston; that's when it's bolted up tight; i was...

Muppet

short header pipe helps it rev; shallow long front cone spreads power; that's what I was reliably informed; but what's inside the box is still a mystery to me,

muppet,

Muppet

If it's over rich it will start to pick up just as the fuel level drops in the float bowl; this could point you in the direction of it being over-jetted; probably best to run it to the point it misfires and keep it at that throttle opening turn fuel off and then it should clear and accelerate as the...

Muppet

Run it with fuel turned off,

Muppet

Very nice!

Muppet

if we didn't try these sort of things out then we could never compare; I ran one on a box pipe it was ok; power was good but not as good as an expansion chamber; genuine 70 on a 44mm pipe and 30 Amal.

muppet

Muppet

use a dummy tank without a filter to supply clean fuel and see how that works;
If all fails just pour the remaining fuel over scooter light it and stand well back,

muppet

Muppet

Divide circumference of flywheel in mm by 360; each single degree will equal (x)mm so how many times does that figure (x)mm go into 30; This will give you a measurement in degrees from your original 30mm timing measurement.

muppet

Muppet

Could you do this to a piston port rapido 250; cutting holes high up in the piston to feed the extra ports so not cutting the ports right back to the inlet; wouldn't this make it more peaky for sprinting and possibly quicker than with a reed fitted,

muppet

Muppet

firekdp wrote:
mark wrote:No that's one of the reasons I sold both my variotronics
Why isn't it possible on a varitronic?

good question; why not?
wire and magnets make current; rectifier makes it dc; inbuilt regulator limits the voltage; so why cant it be done with a variatronic,

muppet

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