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#273574 - 09/07/09 12:36 am jb weld bonded brake shoes  
Joined: Sep 2008
Posts: 722
jaycee Offline
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jaycee  Offline
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angeles city, rp
a year ago you fellas were talking about bonding shoes with epoxy has any one done this and has any comments pro or anti??i am finishing up a lightning project that i tried this on.i was curious if anyone has died or scared the hell out of them selves with this method.my insurance co. will be eternally grateful.

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#273582 - 09/07/09 1:30 am Re: jb weld bonded brake shoes [Re: jaycee]  
Joined: Apr 2006
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johnm Offline
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johnm  Offline
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New Zealand
I had a Norton Andover rear brake bonded lining peel off.

Since then I have always bonded (using araldite) and rivited my brake linings

#273619 - 09/07/09 9:36 am Re: jb weld bonded brake shoes [Re: johnm]  
Joined: Apr 2005
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Mark Parker Offline
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Mark Parker  Offline
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Posts: 2,332
Bega NSW Australia
When we were at school a friend had a piece of lining come off on his triumph, and lock his front wheel throwing him downhill over the bars, something to avoid. JB weld is good stuff but I'd be inclined to get some new shoes if you can. Then again maybe thats what JohnM had trouble with and riviting as well may be the safest option.


mark
#273628 - 09/07/09 11:08 am Re: jb weld bonded brake shoes [Re: Mark Parker]  
Joined: Aug 2001
Posts: 865
Dennis B Online content
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Dennis B  Online Content
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Joined: Aug 2001
Posts: 865
Annapolis, MD
Jaycee,
I have used JB Weld to bond brake shoes on three different brake assemblies with no problems. in fact I'll bet you won't find a better glue for this application.As with all epoxy cure it in an oven at about 250* F for about an hour.(after it has set up.)
HTH
Cheers
Dennis B


Member # 182
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#273750 - 09/08/09 1:12 am Re: jb weld bonded brake shoes [Re: Dennis B]  
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drp Offline
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drp  Offline
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west central ohio where all be...
I don't know much about using JB Weld. Vintage brakes recommends riveting and bonding with Pliobond HT-30 which is available from McMaster Carr cures at 300 F. I used it on my Triumph and I haven't had any problems.

Dave

Last edited by drp; 09/08/09 1:14 am.
#273777 - 09/08/09 8:27 am Re: jb weld bonded brake shoes [Re: drp]  
Joined: May 2004
Posts: 3,546
BSA_WM20 Online content
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BSA_WM20  Online Content
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Posts: 3,546
Sydney Australia
It is vitally important that you get the full material strength data from the makers before you consider using any adheasive on your brakes.
Local temperatures can get in the order of 400 deg C and a lot of epoxies get soft at temperatures over 300 deg C.

I have always either got mine bonded at a brake shop ( and they definately were not using a 2 pack glue), or used OEM solid rivets ( quite easy to do actually) or high strength monel pop rivets ( not the ones you get from Walmart) .


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#273815 - 09/08/09 2:35 pm Re: jb weld bonded brake shoes [Re: BSA_WM20]  
Joined: Sep 2002
Posts: 7,811
Alex Online content
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Alex  Online Content

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Posts: 7,811
Seattle
I haven't had any problem with the set I bonded using JB a couple years ago (though I haven't ridden the bike in six months). I seriously doubt the adhesive is going to see 400C in a road application unless your shoes are dragging really bad. Maybe right at the lining/drum interface, but if that were the case at the shoe/lining interface, I'm sure that I wouldn't have working brakes anymore.

I still rivet linings for racing, but for roadbikes, I'm on 'da glue now.


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#273853 - 09/08/09 8:41 pm Re: jb weld bonded brake shoes [Re: Alex]  
Joined: Apr 2006
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johnm Offline
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johnm  Offline
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Joined: Apr 2006
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New Zealand
"(though I haven't ridden the bike in six months). "

Hi Alex,

Thats exactly the type of use that peels the linings off in my experience.

Storing a bike over winter moisture seems to get in behind the lining and peel it off. My experience of the lining coming off was the rear brake of my 850. I had bought new shoes in a Norton Andover packet about 5 years earlier. Riding in summer storing in the winter seems to allow water to get into it. A friend working at British spares says he has seen this several times.

John


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