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05-29-2010, 08:57 PM | #1 |
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Front Brakes On Time
Group,
The original method for the Model A was to have the rear brakes on first, then the front. Seems that at the time, people thought that if the front came on first, the car could flip. Is there an advantage to have the brakes all come on at the same time ? Seems that that could help to stop better. On my Harley, I always apply front and back at the same time. Marc |
05-29-2010, 09:17 PM | #2 |
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Re: Front Brakes On Time
I have my 28 adjusted so the rear come on first, but with hard braking all 4 can lock up. I would think all 4 being applied equally should be fine, and would probably give shorter braking distance.
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05-29-2010, 09:32 PM | #3 |
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Re: Front Brakes On Time
Tom,
So....why did you set the brakes for back on first ? Was it to be original ? Marc |
05-29-2010, 10:00 PM | #4 |
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Re: Front Brakes On Time
Page 79 of "Know Your Model A Ford"
"The Ford service brakes are so designed that 40 percent of the braking effort is exerted on the front wheels..(text not typed by me)...This distribution of braking effort not only gives quick stopping but also certainty of steering control." |
05-29-2010, 10:56 PM | #5 |
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Re: Front Brakes On Time
I think some of it is due to the wear in my kingpins and bushings. I'm using a temporary front end while I restore the original, and the kingpins and bushings are very loose. I'll set the fronts up a click or two tomorrow and see if it's a bit more even. I checked the brakes with a temp gun after my last drive and found the fronts had no heat after easy braking.
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05-30-2010, 12:40 AM | #6 |
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Re: Front Brakes On Time
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05-30-2010, 05:47 PM | #7 |
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Re: Front Brakes On Time
Marco,
Is the different rate between front and back due to the rear "floating" and not the front ? Marc |
05-30-2010, 09:02 PM | #8 |
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Re: Front Brakes On Time
No, it has to do with the combination of all of the lengths of all of the levers that connect from service brake cross shaft to the shoes. That includes wedge in front and cam in back. The total leverages are different (by design) between front and back, hence different "rate" for the same pedal travel.
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