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So after a clean and rebuild I somehow removed the thread where the main pivot axle bolt goes into the chainstay on my transition scout 🙁
Got someone seeing if a helicoil can be fitted but im wondering if I should stump up the cash and get a new chainstay (not cheap 175) Im obviously worried how long a helicoil would hold for and of at some point I may sell the frame on.
What should I do singletrack peeps?
Definitely helicoil. If done well it should be stronger than the original thread
you've lost nothing by trying it and as above, it'll probably be stronger.
you've lost nothing by trying it and as above, it'll probably be stronger.
I suppose, well apart from the cost of the kit and someone to do it professionally, thanks for replies.
Kit should have everything you need to do it yourself, its really not hard if you take your time.
Good luck
Rolls Royce routinely use helicoils throughout their jet engines. They're stronger than tapped holes and are naturally shake-proof. As others have said, it's an easy diy job if you're remotely practical - certainly for through-holes. Give it a go.
I remember doing the brake thread on my dt swiss forks it was an easy job just take your time and make sure everything is square.
Rolls Royce don't use them because they are stronger, but because if they are damaged its a simple fix, not an expensive weld, machine and heat treat repair if threads are damaged. They are generally viewed as being a better option for bolts that are not removed very often, so pivot bolts should be okay.
Company I know who make military equipment fit helicoils to aluminium parts as standard because they are stronger and a more durable thread than one tapped in alloy where repeated dismantling is possible.
A properly helicoiled thread *will* be stronger than the original. It's not hard to do, but if you can find someone with the right sized kit, it's probably cheaper to pay them to do it rather than buying a kit yourself
You will have to buy a drill, helicoil tap, insertion tool and insert. They also come as kit. Probably cheaper to get it done by a local engineering company.