Brake pedal travel - Team Camaro Tech
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post #1 of 9 (permalink) Old Feb 8th, 02, 10:35 AM Thread Starter
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I was reading somewhere that you can change the lenghth of the pedal pushrod and get a better feel from the brakes,any info on this??
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post #2 of 9 (permalink) Old Feb 8th, 02, 03:38 PM
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Not true - pushrod length won't alter "pedal feel" at all; the only mechanical thing that will affect it is a pedal ratio change (the distance from the pedal swing pivot to the pushrod attachment to the pedal arm). Pedal feel linearity can also be improved by replacing the rubber flex hoses with braided stainless brake hoses, as they don't expand under pressure like the fabric-reinforced rubber ones do. A thorough bleed also helps "firm up" the pedal.

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post #3 of 9 (permalink) Old Feb 8th, 02, 09:50 PM
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<BLOCKQUOTE>quote:</font><HR>Originally posted by richard scott:
I was reading somewhere that you can change the lenghth of the pedal pushrod and get a better feel from the brakes,any info on this??<HR></BLOCKQUOTE>

Like JohnZ says, it won't change the "feel", as you asked in your post, but you labeled this topic "brake pedal travel". If that is what you are asking, yes it will affect brake pedal travel. If you lengthen the pushrod, the pedal will have a shorter distance to travel to apply the brakes because by lengthening the push rod, you are taking some of the "free play" out. However, I'm not sure if this is an advisable thing to do or not. Especially if you are doing it to compensate for a low pedal. Maybe one of the master cylinder experts can comment.
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post #4 of 9 (permalink) Old Feb 9th, 02, 07:37 AM
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I'm with rich253, I don't know what you are really asking? Changing the pushrod length will only make the pedal higher or lower, but it will feel the same. Are you thinking the pedal is too low or something?

Please give us some more details.

Bill C.


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post #5 of 9 (permalink) Old Feb 9th, 02, 06:32 PM Thread Starter
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Yeah,Pedal has long travel,braking pressure is o.k. though.We tested it on a brake test stand.I would like to shorten the pedal travel if it can be safely done.Thanks guys,
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post #6 of 9 (permalink) Old Feb 10th, 02, 06:01 AM
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Pushrod length won't affect pedal travel either, only pedal height, which is limited by the rubber pedal bumper. The only thing that affects pedal "travel" is the diameter of the master cylinder bore (how much fluid has to be displaced to extend the caliper pistons and/or wheel cylinders), and how much air is in the brake system.

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post #7 of 9 (permalink) Old Feb 10th, 02, 08:52 AM Thread Starter
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I will put on some braided hoses and bleed the brakes with a pressurized bleeding tank and let yall know what happens
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post #8 of 9 (permalink) Old Feb 10th, 02, 09:21 AM
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If You have drum brakes and they are out of adjustment, this will also give You extra pedal travel.....
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post #9 of 9 (permalink) Old Feb 10th, 02, 09:51 PM
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[This message has been edited by Rich253 (edited 02-11-2002).]
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