| Re: Brakes |
Subject: Re: Brakes by Churchkey on 2011/4/8 2:40:04 C5 caliper pistons are 40.5mm diameter Converted = 1.62 diameter. To find the sq in to calculate the hydraulic ratio between master cylinder & calipers. Using caliper piston diameter 1.62 & equation R squared X pi. Piston sq in = 2.06 X 4 pistons = 8.245 (rounded) Master cylinder sq in 3/4 = .44 7/8 = .60 15/16 = .735 Divide the master cylinder sq inch into the total caliper sq in. If using a 7/8" bore master cylinder the hydraulic ratio with C5 calipers will be 13.74 As a comp, stock 2 pot calipers with 1.5 inch pistons & using a 7/8 master cylinder the hydraulic ratio = 11.78 IMHO a ratio in the 14 to 1 range is ideal for power assisted brakes. Manual discs require a hydraulic ratio in the 17-18 to 1 range. Luck with your projects. |
