Jump to content

can i weld on disc brake bracket onto mtb frame


superga

Recommended Posts

is it possible and where can it be done in cape town???

 

i have a old gt pantera oversized heat treated alu 7071, wonderful very strong bike, and would like to upgrade to disc brakes so only need to put bracket onto the one seat stay. please help as geometry suits me and havent found new frame that feels the same.. i am 1.9m tall and weigh 112 kg so need stronger rather than lighter frame???? smiley19.gif smiley19.gif smiley19.gif

Link to comment
Share on other sites

It is not impossible but I suggest you find a really good aluminium welder. Look in your yellow pages or find someone who does mag wheel repairs or something. The only problem is that it will tend to "pull" from the excessive heat required to weld it. (it may warp the frame slightly when it starts to cool) It may also create a weak point at the weld and in time may crack there. I MAY sound negative but try it, keep a look out for cracks and ride it till it breaks or till you upgrade properly. mho  

Link to comment
Share on other sites

Guest Big H

You said it in your mail above "heat treated" All frames are heat in as a whole frame. This localized welding will cause a weak point.

 

Trek / Gary Fisher used to make a bracket that bolted onto the stays.
Link to comment
Share on other sites

The Trek/Fisher adapters bolted onto existing holes made specifically for those frames, its not impossible but like manbearpig says it can be risky...

Link to comment
Share on other sites

Rather get an engineering shop to machine you a bracket.

I know a guy who wanted to put a disc brake on his 24inch cruiser. They welded a piece of flat iron to his fork and drilled holes in it for the disc caliper. Worked like a charm. Probably still does. But that was a thick steel fork and not a thinner ali seatstay.

 

Link to comment
Share on other sites

Now where to get one!!!

 

Have seen similar ones on Ebay for $49.99. But you still have to add on shipping.

 

Link to comment
Share on other sites

I would speak to a frame builder, ask around at your lbs, I know that there is someone in Belville, but forget his name

Link to comment
Share on other sites

Thats the guy Francois Du Toit, I spoke to him some time ago about some frame problems and he was a great help

Link to comment
Share on other sites

Been looking at this kind of thing for a long, long time...

 

Have an old Ti-frame that would be eminently suited to a conversion... And would obviously prefer avoiding having anyone come near to my frame with a blowtorch Tongue
Link to comment
Share on other sites

Just been in contact with Brake Therapy, they don't have a distributor in South Africa but they will ship for $10.

 

But the conversion kit costs $149.00

 

Link to comment
Share on other sites

Just been in contact with Brake Therapy' date=' they don't have a distributor in South Africa but they will ship for $10.

But the conversion kit costs $149.00
[/quote']

 

Sjoe.... R1,5k might be an expensive experiment... I know I probably shouldn't be, but quite nervous it doesn't fit properly... Surely the margin for error is non-existent?

 

Who's going to be the guinea-pig and let us know how this goes? Anyone?

 
Link to comment
Share on other sites

OK, I saw this on ebay now $49.99 seems a bit better.

 

But give me a few weeks, going to see if I can get anything made up that is similar.

 

Those interested let me know and I will see if it can be done and for how much. (Hopefully the more done, the cheaper it will be)

 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Settings My Forum Content My Followed Content Forum Settings Ad Messages My Ads My Favourites My Saved Alerts My Pay Deals Help Logout