tony.g
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| posted on 2/10/12 at 09:38 PM |
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Re-lining brake shoes
I have been suffering on track with my rear drum brakes not working too well.
In Trackdriver magazine there is an advert for Cambridge Motorsport offering a re-lining service with a choice of material.
Has anyone tried this and where did you get it done?
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designer
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| posted on 2/10/12 at 09:57 PM |
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Re-lining was common practice years ago, so there is no problem with it.
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Chippy
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| posted on 2/10/12 at 10:10 PM |
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quote:
Originally posted by designer
Re-lining was common practice years ago, so there is no problem with it.
Yes, but that was when we used to rivet them on, now days they bond the linings on, progress, Hmmm! possably.  Cheers Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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hillbillyracer
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| posted on 2/10/12 at 10:57 PM |
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I know commercial linings can get re-lined even when they're bonded so I don't doubt it can be done for ordinary car, just that the
economics don't stack up except for specialist jobs like this.
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britishtrident
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| posted on 3/10/12 at 06:57 AM |
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The competition friction material of choice for drum brakes used to be Ferrodo VG95 but it was asbestos based so is unlikely to be still
available.
Is the problem fade or just insufficient rear braking ? If you just want a little more rear brakes then you can usually fit bigger bore rear
wheel cylinders.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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snapper
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| posted on 3/10/12 at 07:05 AM |
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First thing I would do is check how flat the drum inner face is
They do wear and I doubt you fitted new when you built the car so maybe the drums are ridged and thin
Also check free movement of the shoes
Another thing to look at is a small pressure device that locks a few pounds in the line to stop the shoes drifting off the drums, this feels like rear
brake delay
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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tony.g
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| posted on 3/10/12 at 07:10 AM |
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It's insufficient rear braking. I can get a bigger rear master cylinder. I struggled to get the wheel cylinders and didn't see any bigger
ones advertised (Triumph Dolomite).
Does anyone know anywhere to get bigger ones?
I also want better material on the shoes.
If they end up too good I can adjust the bias or fit a limiting valve.
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adithorp
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| posted on 3/10/12 at 07:17 AM |
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You'd need a smaller master cylinder to increase the braking, not bigger. It's the opposite wite slave/wheel cylinders
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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nick205
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| posted on 3/10/12 at 07:35 AM |
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Is a disc conversion possible for your axle setup?
Sounds like you already have a twin master cylinder setup and the option to adjust the bias. Off the shelf rear pads in different materials must be
easier/cheaper than specially modified shoes?
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Neville Jones
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| posted on 3/10/12 at 09:47 AM |
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Bonded relines have been happening for 50 years or more. I used to do it when I worked in a garage after school, 45 years ago. No big deal.
If you have a Ford rear axle,(Escort, Cortina, Anglia), then you might try a smaller master cylinder, and fitting Escort van rear slave
cylinders(bigger diameter bore).
Cheers,
nev.
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tony.g
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| posted on 3/10/12 at 09:06 PM |
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It's a Triumph Dolomite rear axle.
I can do a disc conversion but I won't be able to use my 13" wheels which I have 3 sets.
I can't get my head round it being a smaller master cylinder being needed.
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Fred W B
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| posted on 4/10/12 at 05:57 AM |
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Pressue = Load over area
Smaller area = more pressure for same load
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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