Quote:
Originally Posted by t walgamuth
If you change the ratio either by changing the length of the levers or if by changing diameter for hydraulic action the stroke will also change, however it will not be noticeable since once you hit that pressure point it will feel solid.
My old 1965 REO truck was semi tired big but had hydraulic brakes....not sure if it had a booster or not.
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The "ratio" is changed at the pivot point, or at least that is what I am talking about. By increasing the ratio from 4:1 to 5:1, you pick up a significant amount of force so that instead of exerting 100 pounds to push the pedal, you're only using 50-ish. Further, the pushrod travel is under 4" which is ideal.