On Mar 29, 2013 6:14 PM, "a l" <[email protected]> wrote:
The pedal crank snapped in half. If it were all aluminum a skilled
person could TIG it but it takes a fair amount of specialized equipment
to get the welder set up correctly. Additionally the crank shaft if
likely not pure aluminum, and has a fair amount of zinc mixed in. This
makes it impossible (and toxic) to weld as far as i know. A new
crankset only runs about thirty bucks on Amazon. I'm sure you could get
it cheaper if you looked.
Andrew has said it best. It is probably alloyed with zinc or magnesium which
when you attempt to weld it, the part will just crumble. I live two doors down
from a bike shop and can stop this coming week and see if they have anything
left over from fixing a bike. If you are in dire need I can give you a
fantastically purple mens mountain bike. The gears are sticky but it rides.
Devin
--- On Fri, 3/29/13, Justin Herman <[email protected]> wrote:
From: Justin Herman <[email protected]>
Subject: Re: [SH-Discuss] welding my bike?
To: "SYN/HAK discussion list" <[email protected]>
Date: Friday, March 29, 2013, 6:36 PM
I would contact a local bike shop and see if they have any donated parts that
would give you. There are some bike rebuild groups local that might have the
part for free.
On Mar 29, 2013 6:14 PM, "a l" <[email protected]> wrote:
The pedal crank snapped in half. Tf it were all aluminum a skilled person could
TIG it but it takes a fair amount of specialized equipment to get the welder
set up correctly. Additionally the crank shaft if likely not pure aluminum, and
has a fair amount of zinc mixed in. This makes it impossible (and toxic) to
weld as far as i know. A new crankset only runs about thirty bucks on Amazon.
I'm sure you could get it cheaper if you looked.
On Mar 29, 2013 5:47 PM, "Justin Herman" <[email protected]> wrote:
I saw a tig welder in the shop it should be able to weld aluminum if you have
the right filler rod and working material. The problem as I see it is that cast
aluminum won't weld like extruded aluminium.
I haven't seen the break but you might be better off with job weld or other
epoxy. Or scrap the part and get a new/used one. What part is broken?
On Mar 29, 2013 3:10 PM, "Edward Bowen" <[email protected]> wrote:
I know there are issues welding aluminum. But Trever seemed to think that they
had equipment for doing that. Sorry if there was some misunderstanding.
On Fri, Mar 29, 2013 at 1:23 PM, Alexander Golightley <[email protected]>
wrote:
Yup.
On Mar 29, 2013 1:19 PM, "Justin Herman" <[email protected]> wrote:
I assume the issue is relating to a cast aluminum?
On Fri, Mar 29, 2013 at 1:16 PM, Justin Herman <[email protected]> wrote:
I havent seen the break But could a JB-Weld do the job?
On Fri, Mar 29, 2013 at 1:06 PM, Alexander Golightley <[email protected]>
wrote:
Devin said that your bike can't be welded because of the type of metal it is.
I'm sorry
On Mar 29, 2013 1:02 PM, "Edward Bowen" <[email protected]> wrote:
Hi sorry I missed the welding presentation Wednesday.
I asked this on Facebook but maybe Devin reads this mailing list more often -
is there any chance Devin will be able to come in at another time to help me
weld by bike crank back together?
Devin has my permission to weld it on his own - but apparently I need to be
there. Problem is, it takes me like an hour to walk there, so I can't go there
whenever I want and probably not at all at night!
I'll be stopping by again Saturday (tomorrow) though. If Devin is free on
Saturday we could meet there then.
Devin, please let me know what works for you, or if you would rather not help
me fix the bike and I should try something else entirely.
Thanks!
Ted
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