David Jenkins
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| posted on 3/6/09 at 12:11 PM |
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Soft brake pedal
I'm puzzled...
My car's brake pedal has always had a soft feel to it - not significant, but it isn't as hard as some other non-servo brake pedals
I've used.
1. The system has been bled several times, and there's no trace of air in the outgoing fluid.
2. There are no leaks - the fluid level is much the same as it was last year, when I last changed the fluid.
3. The flexible brake lines are braided PTFE ones.
4. The front pads are sitting correctly on the discs (just skimming) and the pads are floating as they should.
5. The rear drum shoes are correctly adjusted.
6. The pedals are the standard Mk2 Escort ones, set up the same way as originally used, in a well-braced steel box made from 3mm plate.
7. The car has passed its MOT every year, with the wheels locking before the rollers can get to 'brake slip time'. The braking efficiency
is way above the legal minimum before the wheels lock.
8. On the road, I have no trouble locking the brakes if I'm careless, and I have no concerns about stopping ability. They have shown no sign of
fading during a brisk drive.
So why does it feel spongy?
The only thing I can think of is that the panel the master cylinder is fastened to is flexing, but it's on the back of the very tough pedal box!
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coozer
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| posted on 3/6/09 at 12:15 PM |
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loads of things really.. are the calipers and rear cylinders standard? Changes in piston area can affect pedal feel or travel.
1972 V8 Jago
1980 Z750
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twybrow
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| posted on 3/6/09 at 12:18 PM |
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I noticed both the floor and bulkhead flex when I really stamp on the brakes. Plus, becuase I now have two different soze M/Cs, there is a much softer
feel to my pedal than previously. As you say, it stops well, so why worry about it?
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Mr Whippy
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| posted on 3/6/09 at 12:51 PM |
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as above, it the bulkhead or floor is flexing then that will be your problem
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David Jenkins
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| posted on 3/6/09 at 01:34 PM |
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Calipers, disc and rear drums are all standard.
I might try fixing a bit of steel U-channel between the panel and the master cylinder.
It certainly stops well and will easily lock wheels - so much so that I have to remind myself that I don't have ABS, as fitted to my tin-top!
Maybe I'll just stop worrying and fix it the next time I'm working on that part of the car...
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mad4x4
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| posted on 3/6/09 at 04:39 PM |
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ooo I have the opposite problem mine mine feels way to hard... ooo errr
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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