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Post by ttscshaggy on Jun 11, 2009 9:42:53 GMT
wheres the best place to buy dunno where to get it from  just want to use it to attach master cylinder bracket on headset instead on welding it  |
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Post by hank on Jun 11, 2009 10:58:54 GMT
ebay or your local motor discount store
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Post by breezer on Jun 11, 2009 11:01:22 GMT
I'd question whether it was strong enough for that application.
I don't think I'd use it where there was any leverage forces used on it.
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Post by hank on Jun 11, 2009 11:09:25 GMT
good point.
it is only good for metal (not plastic) and i would imagine the strength of the bond will depend greatly on the surfaces its bonding to, i.e. remove paint, roughen up the surfaces and leave to cure for at least 24hrs.
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Post by swallow on Jun 11, 2009 11:24:38 GMT
I am a huge fan of jbweld but for this application I would be cautious. I wouldnt like to have that nagging doubt in my head every time I reached for the brake. If you contact Eean on this forum, he runs a nice little line in sorting the welding for this conversion.   If you really fancy trying jbweld I would use it in conjunction with a bracket that uses the mirror bracket mounting holes on the underside of the headset. Then it will be definiteley strong enough. But for the hassle factor I would go for welding proper I am still running an mtb frame with the bottom bracket glued into the frame with jb. Only problem is bottom bracket will wear out soon then I'll have to bin the frame. It is really strong stuff but only in certain applications |
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Post by breezer on Jun 11, 2009 11:25:20 GMT
JB weld will cure to a hard lump that you can drill / sand / file / tap / whatever, so you could bolt something to it and I'm sure it would take a fair amount of rough and tumble.
But to then attach that to a headset, all you are doing is glueing it onto a flat surface. The join will only be as good as that glue.
Where that glue is left alone I'm sure it would be fine, but by using the brake lever you will be applying forces against that join.
For a master cylinder / brake lever I'd either get it welded or look for a mechanical solution like one of the brackets you can buy.
The last thing you want is for your front brake to fall off the headset at 60mph
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Post by swallow on Jun 11, 2009 11:37:55 GMT
Yeah - if you moulded some jb into a pencil shaped "rod" and left it to cure I reckon it would be pretty easy to snap. whereas a rod of the same diameter of steel will be quite hard just to bend. It is also really only any good at gripping "around corners" as it were rather than on the flat.
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Post by Brian H on Jun 28, 2009 21:16:28 GMT
Phone around the better dealers- I can get stuff like that done easily and locally- might cost you a few bob but its importance must outweigh its cost. If you struggle ring me and I can help 07870305387 brian
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Post by Brian H on Jun 28, 2009 21:20:57 GMT
Sorry What I meant was to get it properly welded not the adhesive alternative
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Post by Turbojeger on Jun 28, 2009 21:52:47 GMT
Like Swallow says, I would be very careful utilizing JB weld or other "easy"halfway solutions on critical parts (read: Brake handle brackets and engine cases). I posted a link some weeks ago, asking whether Durafix, www.durafix.co.uk/, could get me out of some TIG welding, but I was strongly advised to get hold of a welder, one with experience in aluminium TIG welding. |
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Post by Turbojeger on Jun 28, 2009 22:01:32 GMT
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Post by ttscshaggy on Jul 1, 2009 14:31:38 GMT
cheers for the replies guys
am just being abit tight with money at the minute
but i think i will go for the proper job with ally
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