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09-02-2023, 06:39 PM | #1 |
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F100 brake conversion. use F100 hubs or 37-48 hubs
I have pair of 54-56 F100 backing plates and drums and one hub. I think it is a 37-40 hub and the register diameter on the hub is 3.253; while the hole in the drum is about .100 in. smaller. Question; did that dia. change over time do I cut the register on the hubs to match( lathe)? Thanks .Joel
Last edited by joel; 09-02-2023 at 06:41 PM. Reason: spelling |
09-02-2023, 08:50 PM | #2 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Sure works better if you can find a pair of F100 hubs. It's a matter of the offsets.
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09-03-2023, 10:08 AM | #3 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
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09-03-2023, 02:54 PM | #4 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
How new F100 hubs will work? Can I move the shoulder for the inner bearing back by machining the spindle to use the 37-48 hubs?
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09-03-2023, 03:31 PM | #5 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
THE BIG DISAVANTAGE OF THIS SYSTEM WEATHER IT'S THE f100 OR THE cHRYSLER Hubs is they weight aprox 35 lbs more than the stock brakes. I built mine using stock Ford passenger hubs and jee[ GC rear rotors amd callapers, this weighs aprox the same. Unfortunately no one makes the bracket for the calaper, I made my own.
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09-04-2023, 03:32 AM | #6 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
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09-04-2023, 08:44 AM | #7 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Thanks to everyone for their input. I want to pass this set on and since I didn't have F100 hubs, I didn't want to mislead with bad info. I have had these squirreled away since the 80's. I'm cleaning house.
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09-04-2023, 10:24 AM | #8 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
When using the F-100 hubs on the 37-48 spindles you need to do the following; The stock outer Ford wheel bearing will work from 37-48. You then make an inner bearing and seal change. The F-100 backing plates will bolt the early spindles. There was an old Rod and Custom Quarterly that gave all the part numbers to make the conversion.
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09-04-2023, 11:49 AM | #9 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Speedway has a kit with all the needed bearings and parts.
You have to grind a radius on the inner bearings. I don’t think you can use 42-48 spindles because of hose interference |
09-04-2023, 04:04 PM | #10 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
You can use them by grinding a notch on the top of the spindle to clear the hose. There are also hoses that have a metal extension on them that can clear the spindle.
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09-04-2023, 11:13 PM | #11 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Only the '37-'41 round-back spindles need to be slightly ground for hose clearance; the hoses clear '42-'48 square-back spindles as-is.
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09-04-2023, 11:17 PM | #12 | |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Quote:
'48-'52 F-1 hubs will also work with those backing plates; but you would also need to get different drums. |
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09-05-2023, 09:50 AM | #13 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
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09-05-2023, 02:35 PM | #14 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Can one still get drums for this setup . . . or only used stuff?
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09-05-2023, 03:18 PM | #15 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Rock Auto still lists the drums.
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09-05-2023, 11:38 PM | #16 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
F-100 Drums, shoes, hardware, wheel cylinders and bearings are all still available at most regular auto parts stores. I have them on my '41 p/u and they stop GREAT and adjustment is easy. I have a few more sets for future projects.
Last edited by 1oldtimer; 09-08-2023 at 09:03 PM. |
09-08-2023, 09:23 AM | #17 | |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
Quote:
As for F-1; the drums are obsolete in the aftermarket; but Bronco rear drums fit. Be aware; if you order an F-1 drum from a vintage parts/restoration dealer you will get a Bronco drum at a higher price point. There were some cast Argentina F-1 drums marketed for a while; but they seem to be gone. |
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10-22-2023, 04:40 PM | #18 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
There are a number of good threads about this topic over on the HAMB.
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10-22-2023, 06:22 PM | #19 |
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Re: F100 brake conversion. use F100 hubs or 37-48 hubs
I have copies of the articles that ran in the hot rod magazines. If any one would like a copy, message me with your snail mail address.
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