From my understanding of brake theory, which may be totally wrong, you want the rears to contribute a lot at onset of braking (for good control), but to back off on the contribution as the weight shifts forward. As an ACVW is extremely rear heavy, we want a lot of rear in the mix, comparatively, and the balance is not static. Whether the prop is triggered by a pressure limit knee or triggered by inertia (a steel pinball?), you do want to pull back on rears contributing under hard braking.
Tonight it rained. So I had a chance to test my balance, and yes I need to add the adjustable proportioning valve I bought cause the rears locked up first.
Agreed. And required for me as I intend to add a trailer hitch and want to shutoff the proportioning when she's got the tongue weight.
These cars are a blast.. I'm having fun changing things around. I'm hitting the local boneyard for a Type3 rear setup soon. The rear disc kits are looking cheaper these days, though.
For me, the calipers are about an inch or so lower than the MC. If it was higher so gravity would want to drain fluid back into the MC, I could understand. I can't say I'm having problems with the pads rubbing with a
2psi residual. I'm at least 30K miles on these pads so far at what % wear I'm not sure. I guess with the metering valve (hold-off), it prevents the rubbing behavior.I can't say this setup is doing me wrong with ghia front discs and stock super beetle MC (adjustable prop to be added this week):