That question and what is the function of a bleeder screw in a hydraulic braking system?
approx 75% front, 25% rear on a disc/drum setup. Drum brakes are there to stabilize the back end. I'm not sure off the top of my head on an all wheel disc setup.
the bleeder screw lets air out of the system so that you do not have a soft pedal when you step on the brake to stop.even small amounts of air cause problems. as far as the proportioning valve itself which regulates the pressure between front and rear, I dont know what the factory settings would be for each individual car
70/30 % front/rear. The bleeder screws is to remove (bleed) out of the system. To work right you have to have pressured feed brake fluid to the parts with NO air in system at all. The screws lets you bleed out any air that you get in it from changing parts like caliper, wheel cyl., master cyl, etc.
#1 is pure copper like a bare electrical wire. #2 is like a piece of romex that has been burnt to remove the insulation from the wire. You know what I mean?
Sorry to say but you are ALL wrong. #1 copper is electricians copper in any form. #2 copper is all other copper, such as copper tubing and piping generally used in plumbing applications. The difference is in the purity of the copper itself. Electricians copper or #1 copper as it is commonly referred to, is pure copper. Pure copper conducts electricity much better than copper with added elements, therefore the scrap price is higher than the #2 copper witch contains impurities. However the scrap price differs on electricians copper depending on weather or not it is bare or still has the insulation on it. #2 copper scrap price is also affected by added impurities such as fittings and solder left on the copper pipe as Jon F pointed out in his response to this question.
