[Spridgets] Break pedal?
crusaderchuck55 at aol.com
crusaderchuck55 at aol.com
Thu Jan 20 14:27:13 MST 2022
Ok..ok...OK!QUIET ENOUGH...First my Bugeye has a 7/8" O.E. master cylinder with front disc brakes. Sintered iorn ( honest to god Ceremetallic 60 year old lining!) rear shoes. Additionally it's a rib case with 1275 slave cyl..I have had & still have a great pedal pressure with no surprises and am using DOT 6 Silicone fluid. All that useless rambling , the car has pretty darn good btakes and clutch actuation. Yes it's not a 5 speed with a Datsun clutch. But! Where I AM going is this. About 10 years ago I completely reconstructed a 1969 Elden PH10 Formula Ford from a bare frame up. The 2 brake master cylinders & clutch master cylinder had to be replaced. There was a serious pedal feel to brake response and another odd ball " the clutch always felt funny" stated by its owner. The car was started ( disassembly) years before I inherited the project. Parts were lost and hydraulics corroded , that said I had to replace missing master cylinders. I am not very good at the math in determining the volume of a cylinder relative to the volume being moved in another cylinder to increase or decrease pedal pressure and also determine pedal travel ( which kinda has a lot of where the push rod attached to the pedal relative to the pedal pivot point). There is / are a lot of available tables to do the " how big moves how much" calculations. Yes and pedal free play at master cylinder piston at rest also effects the efficiency of the operation.One last " this might help" thing! As far as rear drum brakes go , fully apply the emergency brake when bleeding the brakes. Ot does not replace fully adjusting the shoes! It simply removes the possibility that it's a poor rear show adjustment question. So? Ummm...next?Chuck
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