Re: Treadle Vac Conversion
Posted by Andrew M On 2022/2/2 22:55:52
Quote:
JeromeSolberg wrote:
That way you can compare to what you would get with the original setup with an approximately 5/8" master cylinder diameter and a 1:1 pedal ratio.
Note - I have never measured the actual diameter of the T.V. piston (really a rod displacing fluid) myself, I have seen it as either 0.655 or 0.625 or even 0.62.
So for:
D = 5/8 and a P.R.=1, you have
Pressure/pound of foot force ~ 3.25
Hope this helps!
I spoke with the company and they think that it is a 15/16" bore master cylinder . He said that he would check on the pedal ratio and I will call back tomorrow. He thinks it is a 4:1, but I personally don't see how. I think a 3:1 would be pushing it looking at the picture.
Another option I thought of would be to use a 5/8 dual master cylinder with a remote mounted booster. I found a dual 5/8 master cylinder that looks to use one master cylinder for the front brakes and one for the rear. I also saw a regular dual remote master cylinder that is also a 5/8 bore. Would either of these work with the pedal in the factory location since the bore is similar to the Treadle-Vac? I would also add a booster to the system, but I want to be able to stop without it.
Links to 5/8 bore dual master cylinders:
Dual Master Cylinder Kit, 5/8″ bore Tandem Master Cylinder 5/8" BoreThis Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=240853