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04-04-2020, 08:49 AM | #1 |
Senior Member
Join Date: Apr 2018
Location: Chelmsford, ON Canada
Posts: 528
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Arcing New Brake Linings
Nice weather and nowhere to go, so I pulled the front and rear drums on the '46 to check for wheel cylinder leaks and clean out brake dust. I found that the contact area of the eight shoes ranged from +/- 40 to 80% contact, which is understandable, given drum wear and the quality of some aftermarket parts. As well, there are no places where I live that have the equipment to arc shoes to match drum diameters. I started to sand the first lining using a sanding block and 80 grit paper. I could not get at backing plate side of the lining because of the lip that overhangs the lining. What to do? I decided to make a tool for the job. Using a block of maple I had in my woodshop, I cut and shaped a tool to hold an 1-3/4" X 5" strip of adhesive backed sandpaper. I cut a radius of 6" (12" drums) which is close enough to get the high spots by manipulating where I put the pressure on the sanding block. All the shoes are done now, just have to put drums and wheels back on, and test drive and recheck after the snow is gone and a few miles driven.
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04-04-2020, 09:06 AM | #2 |
Senior Member
Join Date: Jul 2010
Location: 36 miles north of Albany NY
Posts: 2,943
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Re: Arcing New Brake Linings
Wow cool idea, now when are you going into production on that tool.
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04-04-2020, 10:25 AM | #3 |
Senior Member
Join Date: May 2010
Location: Liberty, KY
Posts: 899
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Re: Arcing New Brake Linings
How about stickon paper inside the drum and bolt the drum on and spin the drum with a handle while adjusting the brake shoe out?
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04-04-2020, 10:34 AM | #4 |
Senior Member
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
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Re: Arcing New Brake Linings
I have a large KR Wilson machine for arching Ford brakes and a big heavy
machine to reline pressure plates if anyone is interested. They are located in Punta Gorda, FL. Also have equipment to line bore the engines. I think it does both crank bearings, cam bushings and cylinders. If interested call 1-941-637-1813 after 3:30 P.M. or [email protected] G.M.
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04-04-2020, 12:32 PM | #5 |
Senior Member
Join Date: May 2010
Location: Ft Mohave,Az
Posts: 1,987
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Re: Arcing New Brake Linings
When I did mine on the 34 roadster I used a belt sander with 80 grit ,of course the shoes were off.
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04-04-2020, 01:56 PM | #6 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
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Re: Arcing New Brake Linings
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04-04-2020, 03:06 PM | #7 |
Senior Member
Join Date: Aug 2010
Location: New Zealand
Posts: 1,111
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Re: Arcing New Brake Linings
This is how i re arced my shoes ,hillbilly way. Backed the adjusters right off, found some rolls of sticky backed sand paper and stuck to the drum. Re installed drum and wheel , spun the wheel a while , readjusted shoes ,another short spin and i was done . Super easy and cant really get it wrong, perfect radius now.
Pic two shows poor contact, hard to see in pic 3 but perfect even contact now. |
04-04-2020, 05:33 PM | #8 |
Senior Member
Join Date: Oct 2015
Location: Bonita, CA
Posts: 1,374
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Re: Arcing New Brake Linings
Just don't breathe the dust. They are still using asbestos in some brake linings.
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04-04-2020, 06:01 PM | #9 |
Senior Member
Join Date: Jan 2019
Location: Chicago
Posts: 728
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Re: Arcing New Brake Linings
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04-04-2020, 06:22 PM | #10 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,303
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Re: Arcing New Brake Linings
Ask the guys in Australia about asbestos content in automobiles.
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