The Ford Barn

amishman · 12-18-2012, 07:16 PM

Question,, I'm doing a complete rebuild of the brakes, I got a tool to cut the swage off the studs of old hubs, pressed out the studs, got new cast iron drum from Synder's, but now I don't have a press large enough to swage the new studs into the new drums. I talked to the machinist at NAPA machine shop near where I work, He wondered why they have to be swaged, if they are trapped between the hub and wheel when the lug nuts are tighten. I said I wasn't sure , but I ask the experts.

Art Bjornestad · 12-18-2012, 07:58 PM

I just finished swaging studs. After getting the old ones out I had to use a 30 ton press to get the needed pressure. The stud has a small finger that has to be accurately lined up before pressure is applied. Studs come in just one size but if you have steel drums the shanks will have to be cut down.

Special Coupe Frank · 12-18-2012, 08:07 PM

If the studs are not swaged into the countersink in the face of the drum, the lug-nuts will bottom on the shoulder of the stud before they completely clamp the wheel/drum/hub together, and those three elements will "work" when the brakes are applied, and everything will get hogged-out and boogered-up.

DON'T DO IT !

If your NAPA guy is unconvinced, look for another machine shop.

Jim Parker Toronto · 12-18-2012, 08:15 PM

amishman, they need to be swagged tight in order to hold the alignment between the hub and the drum. The studs hold the drum to the hub so they don't misalign, and the true centers can be found and held. Then the drum can be turned to provide a concentric center to align the shoes to. It would also be very difficult to remove the wheel nuts if the studs were able to turn.

Tom Endy · 12-18-2012, 08:23 PM

A word of advice, do lot let a commercial auto machine shop do the work for you. There is a skill involved and special support tools needed. These shops can easily crack your new drums and warp the hubs. Most of the old guys that worked in these shops and had the skill are long gone. Have your drums done by someone in the Model A hobby.

Tom Endy

Russell in Tulsa · 12-18-2012, 08:52 PM

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Tom gave the correct answer to your question.

John LaVoy · 12-19-2012, 10:51 AM

I concur with Tom, most of the parts vendors offer the service. You might look at having them do the job.

Barry B./ Ma. · 12-19-2012, 11:10 AM

I had mine swaged by a local auto machine and repair shop who had done it before. He said the tool I supplied (bought from a Model A supplier) was no good and wouldn't take the pressure. He had a hardened tool and backup tool. Charge was $5 per stud and all came out perfect. Note: new studs had to be cut back 1/16 because of the steel drum thickness. All the new studs are made for cast drums.

KR500 · 12-20-2012, 03:06 AM

I have had good luck using a 9/16 hole saw for removing the swaged metal around the 1/2 studs. I use it on a Milwaukee hole saw mandrel which does not need the center 1/4 inch drill installed. Remove enough metal of the old stud to easily tap out the old studs. I have used a Dake press with a fixture to swage new studs.

12-18-2012, 07:16 PM	#1
amishman Member Join Date: Jul 2012 Location: Freeport, MI Posts: 35	Putting New studs in New Drum Question,, I'm doing a complete rebuild of the brakes, I got a tool to cut the swage off the studs of old hubs, pressed out the studs, got new cast iron drum from Synder's, but now I don't have a press large enough to swage the new studs into the new drums. I talked to the machinist at NAPA machine shop near where I work, He wondered why they have to be swaged, if they are trapped between the hub and wheel when the lug nuts are tighten. I said I wasn't sure , but I ask the experts.

12-18-2012, 07:58 PM	#2
Art Bjornestad Senior Member Join Date: May 2010 Location: Westlake Village, CA Posts: 477	Re: Putting New studs in New Drum I just finished swaging studs. After getting the old ones out I had to use a 30 ton press to get the needed pressure. The stud has a small finger that has to be accurately lined up before pressure is applied. Studs come in just one size but if you have steel drums the shanks will have to be cut down.

12-18-2012, 08:07 PM	#3
Special Coupe Frank Senior Member Join Date: May 2010 Location: Northeast Penna Posts: 2,108	Re: Putting New studs in New Drum If the studs are not swaged into the countersink in the face of the drum, the lug-nuts will bottom on the shoulder of the stud before they completely clamp the wheel/drum/hub together, and those three elements will "work" when the brakes are applied, and everything will get hogged-out and boogered-up. DON'T DO IT ! If your NAPA guy is unconvinced, look for another machine shop.

12-18-2012, 08:15 PM	#4
Jim Parker Toronto Senior Member Join Date: May 2010 Location: Toronto, Ontario, Canada Posts: 1,289	Re: Putting New studs in New Drum amishman, they need to be swagged tight in order to hold the alignment between the hub and the drum. The studs hold the drum to the hub so they don't misalign, and the true centers can be found and held. Then the drum can be turned to provide a concentric center to align the shoes to. It would also be very difficult to remove the wheel nuts if the studs were able to turn.

12-18-2012, 08:23 PM	#5
Tom Endy Senior Member Join Date: May 2010 Location: Southern California Posts: 3,131	Re: Putting New studs in New Drum A word of advice, do lot let a commercial auto machine shop do the work for you. There is a skill involved and special support tools needed. These shops can easily crack your new drums and warp the hubs. Most of the old guys that worked in these shops and had the skill are long gone. Have your drums done by someone in the Model A hobby. Tom Endy

12-18-2012, 08:52 PM	#6
Russell in Tulsa Senior Member Join Date: May 2010 Location: Tulsa Oklahoma Posts: 298	Re: Putting New studs in New Drum Sponsored Links (Register now to hide all advertisements) Tom gave the correct answer to your question.

12-19-2012, 10:51 AM	#7
John LaVoy Senior Member Join Date: May 2010 Location: Rocklin, CA Posts: 1,219	Re: Putting New studs in New Drum I concur with Tom, most of the parts vendors offer the service. You might look at having them do the job.

12-19-2012, 11:10 AM	#8
Barry B./ Ma. Senior Member Join Date: May 2010 Location: Southbridge, Ma. Posts: 1,614	Re: Putting New studs in New Drum I had mine swaged by a local auto machine and repair shop who had done it before. He said the tool I supplied (bought from a Model A supplier) was no good and wouldn't take the pressure. He had a hardened tool and backup tool. Charge was $5 per stud and all came out perfect. Note: new studs had to be cut back 1/16 because of the steel drum thickness. All the new studs are made for cast drums.

12-20-2012, 03:06 AM	#9
KR500 Senior Member Join Date: Mar 2012 Location: Addison,ll. Posts: 453	Re: Putting New studs in New Drum I have had good luck using a 9/16 hole saw for removing the swaged metal around the 1/2 studs. I use it on a Milwaukee hole saw mandrel which does not need the center 1/4 inch drill installed. Remove enough metal of the old stud to easily tap out the old studs. I have used a Dake press with a fixture to swage new studs.