Help

Hello All
Anyone in the Melbourne preferably in the Brunswick area got a type 3 or 1 12 volt flywheel I can borrow to allow me to clearance my 6 volt gearbox with out pulling the clutch and flywheel of my new engine
Cheers Paul

Paul,

You'll still need the flywheel mounted on an engine so you can turn it and see if it's clear all round. The usual method of determining the clearance required is to mate the engine (with flywheel) up to the gearbox until the flywheel touches the gearbox, then turn the engine by hand until the flywheel teeth have scored the edge of the high points (usually the two lower engine mount bolt-hole castings). Then you grind to a slightly larger diameter than that, and to the depth of the flywheel as it projects out from the engine mating surface. The 12v flywheel is about 3mm larger than the 6v version, so you don't need a LOT of grinding to get the clearance.

Oh - and I meant to say that the alternative is to continue using the 6v (109 tooth) flywheel and the 6 starter as it will survive for many years on 12v.

If you DO convert to the 12v flywheel and 12v starter, don't forget to change the pinion bearing for the starter shaft (the 12v version has a smaller diameter shaft), or alternatively, get a 12v starter from a semi-auto bug - they have a shortened shaft and don't use the pinion bearing at all.

Cheers Rob

Good advice - I have the 6v to 12 v bush on order as the 6v clutch is stuffed - which leads to ask will the 12v clutch mount onto 6v flywheel would save the hassle of clearancing

Paul

Paul, I'll bring one down this Saturday. :thumb

paulr wrote:Cheers Rob

Good advice - I have the 6v to 12 v bush on order as the 6v clutch is stuffed - which leads to ask will the 12v clutch mount onto 6v flywheel would save the hassle of clearancing

Paul

Paul,


The 12v bugs use a 200mm clutch.

The 6v beetle flywheel has a 180mm clutch. This can cope with a 1600 (it's used on the 1600 semi-autos) but it will have a reduced life and you should avoid hard launches.

The 65-66 Type3 has a 6v flywheel with a 200mm clutch (I think the 65-66 Kombi is similar) so if you can find one of those flywheels you get both the smaller flywheel AND the larger clutch.