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Old 12-11-2006, 03:15 AM   #1
R6kid
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TIG welding

I saw a post a while back about somebody needing an aluminum tab welded back on....a guy i know that went to wyotech has a tig welder and will do it cheaper than any shop (he does all the work for my family's cars, everything from superchargers to aftermarket lights)

guystrtrcr18@hotmail.com
his names jeremy...just throwing that out there incase anybody still needed or needs aluminum welding done
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Old 12-11-2006, 03:16 AM   #2
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do you think this guy you know can heat up a brake lever and hammer or bend it back to flat?
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Old 12-11-2006, 03:20 AM   #3
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i asked him on aim...he said he's sure he could make it happen but from his knowledge most of those brake levers are cheap, might be worth your while to just get a new one
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Old 12-11-2006, 03:46 AM   #4
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oh yes i have bought a new one for like 65 bucks but the one that i messed up is a trick part that i cant even find for the past 2 months. I think it was special made or limited made.
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Old 12-11-2006, 08:17 AM   #5
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Old 12-11-2006, 10:35 AM   #6
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Always good to have the name of a good aluminum welder!

My cousin just graduated from Wyotech last year. Small world.

Long,
How bad is it bent. I've had some success slightly straightening levers / pedals etc through the years.

However, cast materials typically don't "bend" well.

They may bend pretty far without cracking initially in one direction, but once they're bent they don't do well going back in the other direction.
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Old 12-11-2006, 12:05 PM   #7
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i would say its bent 30-45 degrees and several metal shops wouldnt do it because of the reason they think it will crack but i suggest they heat it until its glowing and try because even if it does break it was better to try than just throw it away. If anything i will bring it with me when i head up there to get measured for the back protector and other things.
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Old 12-11-2006, 12:12 PM   #8
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On a molecular level cast aluminum doesn't respond the same way as say steel does to heat, but I'll look at it just the same when you bring it up.
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Old 12-11-2006, 01:03 PM   #9
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ya thats exactly what he was sayin...i just didn't understand lol sounds like it would lose strength even if you got it to bend back
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Old 12-11-2006, 04:43 PM   #10
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Quote:
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However, cast materials typically don't "bend" well.

They may bend pretty far without cracking initially in one direction, but once they're bent they don't do well going back in the other direction.
Patrick again is absolutely correct. From my basic materials classes it has to do with the crystalline structure and how exactly it was cast and allowed to cool. A good materials guy could explain it to you.

Here's the point-just get a new lever (usually only 30 bucks or so) and save the old one-in case you absolutely destroy the new one and just need something to put on that can function.
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Old 12-11-2006, 07:10 PM   #11
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Quote:
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ya thats exactly what he was sayin...i just didn't understand lol sounds like it would lose strength even if you got it to bend back
It may loose strenght but its not like i will put much weight on it and it hardly even gets used only there because tech requires functioning rear brake
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Old 12-11-2006, 07:21 PM   #12
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Quote:
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On a molecular level cast aluminum doesn't respond the same way as say steel does to heat, but I'll look at it just the same when you bring it up.
Internally it heats up and comes apart, seperates easy causing it to crack. Never glows red hot either, that's what makes it hard to know when it's maliable.
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Old 12-11-2006, 10:04 PM   #13
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oh hmmmmmm well guess we do it the tim taylor way.....just use mega 999999 F hahahaha
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Old 12-11-2006, 10:54 PM   #14
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if its alum. and you try to heat it all its going to do is anneal it and make it soft. your best bet is to try and bend it back slowly so the metal doesn't heat from the stress and snap. if it does snap, just weld it back but heat is the last thing you want when working aluminum.
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Old 12-11-2006, 11:01 PM   #15
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i dont know if its alum. i think its forged steel
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Old 12-11-2006, 11:30 PM   #16
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Quote:
Originally Posted by Longnguyen
i dont know if its alum. i think its forged steel
if its forged steel and less than 45 degrees out, heat that puppy up and bend her back. i wouldn't get it glowing hot but use a good amount of heat. you heat it too much and the metal will do some wierd stuff depending on how it is cooled. if its not too thick you might even be able to bent it back without heat, just a good amount of leverage. i've bent back alum. brake pedals that were well past 45 deg. so i know yours can be fixed. just takes a good feel for what the metal is doing and a little patience. hey, was that you with that itty bitty ol' track bike at the Motorcycles Unlimited bbq a while back?
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Old 12-11-2006, 11:45 PM   #17
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Will a magnet stick to it? If so heat it and beat it.
If it's aluminum there is a trick you could try. If you take a torch and turn off the oxy (you get a smokey yellow flame) pass that back and forth and it will leave soot (carbon) on the surface.
Turn the oxy back on and carefully heat. When you see the carbon disappear you are very close to the melting point of aluminum. Heat away all the carbon you put in the area you want to bend.
The hard part is that aluminum doesn't change appearance until it melts. One second it is fine the next it is liquid.
Let air cool and the aluminum will be as soft as the alloy will allow. You may be able to safely bend it straight.
The trick is to reheat treat that area. Can't help you with that sorry.Heat treating is a science.
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Old 12-11-2006, 11:47 PM   #18
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Quote:
Originally Posted by zero_cool
if its forged steel and less than 45 degrees out, heat that puppy up and bend her back. i wouldn't get it glowing hot but use a good amount of heat. you heat it too much and the metal will do some wierd stuff depending on how it is cooled. if its not too thick you might even be able to bent it back without heat, just a good amount of leverage. i've bent back alum. brake pedals that were well past 45 deg. so i know yours can be fixed. just takes a good feel for what the metal is doing and a little patience. hey, was that you with that itty bitty ol' track bike at the Motorcycles Unlimited bbq a while back?
yes that was me
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Old 12-12-2006, 12:09 AM   #19
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Quote:
Originally Posted by bumblebee
Will a magnet stick to it? If so heat it and beat it.
If it's aluminum there is a trick you could try. If you take a torch and turn off the oxy (you get a smokey yellow flame) pass that back and forth and it will leave soot (carbon) on the surface.
Turn the oxy back on and carefully heat. When you see the carbon disappear you are very close to the melting point of aluminum. Heat away all the carbon you put in the area you want to bend.
The hard part is that aluminum doesn't change appearance until it melts. One second it is fine the next it is liquid.
Let air cool and the aluminum will be as soft as the alloy will allow. You may be able to safely bend it straight.
The trick is to reheat treat that area. Can't help you with that sorry.Heat treating is a science.
you aren't lying when you say its tricky heat treating. i used to work for company that produces oil pipeline and we did a lot of heat treating. if your off 20 degrees it can affect the integrity of the metal pretty greatly. quenching and tempering is a cake walk, its that naturalizing and annealing thats a bioch.
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Old 12-12-2006, 07:51 AM   #20
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Quote:
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yes that was me
well this thread really got Jacked. If it were me and a brake lever I would take it off the bike heat it up and throw it in a dumpster go down and ask Patrick or Andy or what ever shop you like for a new one. If it were a clutch for street riding then I would try all these tricks some sound like they would work.

ps make sure you right side of the bike works
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