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Old 07-21-2004, 10:45 AM   #15
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Pick.

You "MUST" not mix the two different style backing plates.

To do so, causes the oval brake to carry more braking weight than it should, and that's assuming you have both brakes adjusted correctly.

Further, by having different braking effiency on the two axles, may also cause abnormal tire wear, since one axle is doing more stopping than the other.

Not a good idea to mix different style brakes.

Round brake magnets are still available.

Andy
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Old 07-21-2004, 12:06 PM   #16
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Considering that a backing plate for 12" brakes can be had for something like $60 it can make good sense to go this route.

If one magnet is worn, the others are suspect, too, and their cost is a good chunck of the cost of an entire backing plate.

The backing plate gets you magnets, shoes, springs, and all the other moving brake parts.

The backing plate is a simple install (although I have heard conflicting stories about whether the hub braking surfaces need turning) - this ameliorates labor costs which tends to even out overall costs.

So I am looking at new backing plates in a year or two on my 30 year old. Am I missing something?

Thanks Andy for the not mixing note - hadn't considered that one.
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Old 07-21-2004, 12:20 PM   #17
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Quote:
Originally Posted by Leipper
...The backing plate is a simple install (although I have heard conflicting stories about whether the hub braking surfaces need turning) - this ameliorates labor costs which tends to even out overall costs...
Hopefully it is a simple install. I was at an SOB dealership the other day picking up common parts, and noticed they had backing plates on the shelf. Now, it might just be the brand they carry, but the man helping me told me that everything mounted on the backing plate would work on my Airstream, but the backing plate itself would not. I would need to transfer the stuff from one backing plate to another.

I tended to trust him because although he works for an SOB dealer, he tows an Airstream

Just be careful that the loaded backing plates you buy will fit your axles.

Tom
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Old 07-21-2004, 03:40 PM   #18
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Brake backing plates will fit all but the oldest of drums.

When the drum hits the backing plate, have a machine shop take about an 1/8 to 3/16 of an inch off of the inner lip.

Then have a beer, cause the problem is gone.

Andy
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Old 07-21-2004, 04:32 PM   #19
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Originally Posted by Inland RV Center, In
Brake backing plates will fit all but the oldest of drums...
Trust but verify
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Old 07-22-2004, 07:01 PM   #20
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For the archive

Just came in today:
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