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04-26-2013, 03:34 PM | #1 |
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Join Date: Jul 2012
Location: Lubbock,Tx.
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Drum swedging problems
This my first build of a 29 AV8 traditional style. I'm using 39 style brakes and I'm trying to get the reproduction drums swedged without much luck. I'm using American made drums from Macs with the recommended studs. The machine shop couldn't get them tight and ruined a new drum. Could someone help me with tips, measurements, drawings of a support tool, or anything to help get me going? Thanks in advance.
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04-26-2013, 03:38 PM | #2 |
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Location: Madison, NJ
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Re: Drum swedging problems
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04-26-2013, 05:25 PM | #3 |
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Join Date: Dec 2010
Location: San Antonio Texas
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Re: Drum swedging problems
Ford Garage is the cats meow!Lots of good info.
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04-26-2013, 07:15 PM | #4 |
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Re: Drum swedging problems
some shots
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04-26-2013, 09:33 PM | #5 |
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Location: Cincinnati, OH
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Re: Drum swedging problems
Where did the studs come from? Are these the 01A drums?
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04-27-2013, 04:18 AM | #6 |
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Re: Drum swedging problems
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04-27-2013, 11:09 AM | #7 |
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Re: Drum swedging problems
You will not get the stock studs to swedge to your replacement drums. The replacement drums are to thick. The most effective way to replace the studs in the hub and drum is to use the more modern style straight knurl press in studs. This does require a little additional work as the stud body is slightly larger than the original hub hole. I believe the Dorman number is 610-234 for the stud. You will have to ream the hub hole out to around .610 and then have the studs pressed in for anchoring. You cannot just drill the stud holes out as the drill will not center in the hole and will position the stud out of round.
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04-27-2013, 12:03 PM | #8 |
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Re: Drum swedging problems
These studs we welded on the back down both sides ,Works great .You can take the drum of separate to the hub ,partially good on the rear .
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04-27-2013, 05:31 PM | #9 |
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Re: Drum swedging problems
As Dick says, the hole in the hub must be reamed to a larger size if using the Dorman 610-234 stud. However, the knurls on this stud are .612 OD, so I would ream only to .600 or maybe a bit more. Also, depending on your particular set of parts, the end of the knurl on this stud may protrude beyond the hub/drum mount surface which might interfere with mounting the drum. (If so, the length of the knurl can be cut back a little.) Some careful measuring is needed.
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04-27-2013, 05:46 PM | #10 |
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Join Date: Jul 2012
Location: Lubbock,Tx.
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Re: Drum swedging problems
Thanks for all the help guys. I think I'll try the ream and press fit route because my budget is going faster than my progress. Glynn
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04-29-2013, 07:36 AM | #11 |
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Location: Cincinnati, OH
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Re: Drum swedging problems
Glynn.......didn't see an answer so I'll ask again. Could you tell us which drums you used? For 39 style brakes, it could have been the 01A drums or the 51A drums. Thanks!
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