andyborris
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Freedom is just another word for nothing left to lose.
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Mar 31, 2019 12:41:31 GMT
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Can worn (too thin!) brake discs make the pedal feel soft?
Fitted new calipers and pads, bleed the brakes and have found it impossible to get a firm pedal, the car stops very well, just feels like it's going to run out of pedal travel!
The calipers are the sliding type, with a piston in one side only and on a Mitsubishi Delica.
The brake discs are very thin, with quite a ridge on the un-braked part, going to change them, but was wondering if there may be something else I should look at too.
Thanks
Andy
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Mar 31, 2019 13:29:48 GMT
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Hi, They can appear soft until the pads bed in, especially on used discs. Once they bed in again on new discs you will notice quite a difference.
Colin
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Mar 31, 2019 13:31:38 GMT
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id say new pads feel wooden and poor effort not a soft pedal
are the pads making full contact , not just riding on the lip?
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91 golf g60, 89 golf 16v , 88 polo breadvan
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,149
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Mar 31, 2019 14:58:12 GMT
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Should be bedded in by now and new discs should cure the "riding on the lip" effect. Hopefully, the pads will be reusable, should've fitted new discs when I did the calipers...…!
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Last Edit: Mar 31, 2019 14:58:25 GMT by andyborris
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ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
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More Brake ProblemsChasR
@chasr
Club Retro Rides Member 170
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With new pads, especially on new discs, I've always noticed a spongy pedal until they bed in. Some can take forever to bed in, and then the difference becomes apparent!
On my sister's car, it had a spongy pedal for a different reason ; the sliders had seized into the rubbers due to corrosion buildup. That caused what seemed like an almost incurable soft pedal. With the rust cleaned out, and new slider bushes with new pins, I am staggered by just how much the braking peformance has improved. For the first time in a while, that I can rememeber anyway, it now has a solid pedal
Oh, and only use rubber or silicon grease on the slider bushes ; they should be super free to move in the caliper. Copper grease can cause more harm than good IME.
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tristanh
Part of things
Routinely bewildered
Posts: 990 
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As above, copper grease turns to mud on sliders, I use Red Rubber Grease.
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Whether you believe you can, or you cannot, you're probably right.
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