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Old 08-12-2020, 02:24 PM   #1
3twinridges
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Default F1 front drums

I picked up a pair of original used front F1 drums. One looks like it has 0.010 of wear and one looks like 0.020 of wear. Assuming I can get them to clean up at 0.030 or 0.040 over and the wear limit is 0.060 over, would I have any reduction in braking due to larger drum size?

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Old 08-12-2020, 03:28 PM   #2
JSeery
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Default Re: F1 front drums

The drums are designed to met specifications to .060 oversize.
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Old 08-12-2020, 03:53 PM   #3
51 MERC-CT
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Default Re: F1 front drums

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Originally Posted by 3twinridges View Post
I picked up a pair of original used front F1 drums. One looks like it has 0.010 of wear and one looks like 0.020 of wear. Assuming I can get them to clean up at 0.030 or 0.040 over and the wear limit is 0.060 over, would I have any reduction in braking due to larger drum size?

JB
Most likely only if you changed the size of the brake shoes which provide the sq.in. of braking area.
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Old 08-12-2020, 04:27 PM   #4
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Default Re: F1 front drums

what are you putting them on?
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Old 08-12-2020, 04:39 PM   #5
3twinridges
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Default Re: F1 front drums

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what are you putting them on?
A 52’ F1 stock restoration. I have new reproduction drums on it now but would like the originals if they will work just as good.

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Old 08-12-2020, 04:51 PM   #6
CA Victoria
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They will interchange. Turned drums and shoes are matched by arcing the shoe to match the drum. You will need to address this to ensure efficient braking.
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Old 08-12-2020, 04:58 PM   #7
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Default Re: F1 front drums

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They will interchange. Turned drums and shoes are matched by arcing the shoe to match the drum. You will need to address this to ensure efficient braking.
Brake arcing is really important with Lockheed style brakes, but with Bendix brakes like the F1 it is not that big a deal and not normally done.
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Old 08-17-2020, 09:45 PM   #8
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Default Re: F1 front drums

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Brake arcing is really important with Lockheed style brakes, but with Bendix brakes like the F1 it is not that big a deal and not normally done.
Thanks bud. It’s good to know it’s not needed, as I can’t find anybody around Atlanta that can do it anyway!

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