Where to buy a rear derailleur helicoil kit?

Re:

The part itself is cheap, its having a drill press to squarely remove the damage and a tap to cut the new thread that tends to be costly, unless you want one of the basic ones that simply pushes into the drilled out hole from the back and uses the mech to hold itself in place. The trouble with these is you need to have suitable rear mech to dropout clearance so they do not foul up. Most oldies will be fine but newer stuff is often a touch close.
 
LittleSkink":2qvtgqqt said:
errr, okay LBS has got back to and reckon the hanger is too thin to helicoil - it is 6mm

thoughts/comments?
Click to expand...

That's what I thought after reading first post.
 
Usually need a thickness of about 1 to 1.25 times diameter to make sure the helicoil doesn't wind itself out while you are trying to get the mech bolt in.

Frame saver is probably a better bet. If you want it to be "permanent" a bit of bearing fit/loctite around it's outside diameter will help hold it in place.
Unfortunately, drilling out the thread may weaken what's left.
 
Bitd we would have used a dropout saver, some dropouts were not threaded so there were plenty about. Either that or saw off the hanger and use a replacement removable one.

Shaun
 
M10 x 1, is that the correct size?

Can you weld or braze/solder the hole and rethread.
 
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