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.
Drum swedging problems
- Thread starter trucker1
- Start date
Bruce Lancaster
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texas webb
Well-known member
Ford Garage is the cats meow!Lots of good info.
FlatheadTed
Well-known member
FlatheadTed
Well-known member
I weld the back , then grub screw the drum
DICK SPADARO
Well-known member
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.
FlatheadTed
Well-known member
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.