Re: Front disc brakes for 1941-47 Clippers

Posted by HH56 On 2013/4/19 12:13:44

Not sure you would necessarily need a dual master -- other than for the safety aspect -- but without one I do think you would need a proportioning valve since discs take more pressure to lock up than drums do. Without some control rears could lock up while fronts were still thinking about it. MPBhttp://www.mpbrakes.com/ has a good tech support section that can answer or give recommendations to most questions or layouts. Others who have added discs might better answer the valve need based on their experience.

As far as keeping the BTV, letting the reliability question remain totally out of the picture for this discussion, I think the volume output would be marginal for a disc setup. Most of the masters designed for discs or disc/drums have a larger volume section to feed the discs and a smaller volume for the drums. I measured the output of a full stroke on a BTV and while I forger the exact number, was surprised that it was fairly small. MPB has some comments on the needed volume question as well.