FastG wrote:
I might have come up with the perfect no cost solution. After playing with the spreadsheet for hours, looking at what master cylinders are available. The light bulb came on, Swap the calipers front to rear. They are both the same brand and model Wilwood Dynalight Forged, but the rear has larger pistons area, (3.0 to 4.12) Once swapped I will be within a couple of percentage points of the idea with the same lever pressure give or take a couple of pounds (72 to 69).
I have a new brake proportioning valve for my TR8 arriving today, so it looks like I will be spending all Saturday playing with brake fluid:)
Graham, glad the spread sheet has been helpful to you. Looks like you are on the path to a good solution. As close as you are in theory, you should be able to dial it in for the real world with the balance bar. Adding a proportioning valve as a safety valve for high line pressures can help make sure the rears never lock first.
BBlue wrote:
Speaking of Wilwood proportioning valves, does anyone know how they operate? Are they linear with a pressure cap, linear with a knee and reduced pressure, or produce an across the board pressure reduction?
Bill, if I correctly understand how they work, they have no effect until the preset line pressure is reached, then provide a linear reduction in pressure thereafter. Different brand valves seem to spec different reduction percentages.
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