Thread damage on Fox F RL 32

[jamis1]

The thread were the brake caliper bolt on my Fox F RL 32 fork is damaged   , can this be repaired and who can do this type of repair in Gauteng I am located on the East rand

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Thanks

[Johan Bornman]

If you post a photo of the area we can comment more accurately. However, this sounds like a job for a thread insert to me. These can be purchased from specialist bolt and nut companies and inserted by any competent DIYer.

 

This is dirt cheap: R15 or so.

 

I've fixed stripped stemps, derailer hanger bolts and one other part on my bike like this. The latter escapes me now...maybe because I've forgotten to take my Ginko somethingorother this morning.

 

 

[jamis1]

Thanks JB I will Try to post a photo

[jamis1]

The bottom one is damaged .I am trying to fit a Shimano adapter on for a180 Rotor and they have a specialized bolt for the bottom one If I can get a longer bolt it will work as well, it seems to be the first couple of threads that are damaged

[Johan Bornman]

OK, that's no problem. Go to a bolt and nut company ask for a thread insert. If they look puzzled, say "like a helicoil". The difference is that the latter needs a special tool.

 

They come in different sizes, so ask for one the size of your bolt - looks like 6mm. If you don't have a lot of bolts and nuts in your garage, also ask for a 50mm (or similar)  6mm bolt and one nuts.

 

This is your "special tool". You screw the nut halfway onto the bolt  and the into the threaded insert - slotted side first in.

 

You now lock the bolt onto the insert by turning the nut towards the insert and screw the whole lot into the hole (which was now already drilled to the insert's size). This is a self-tapping affair and therefore you should use oil.

 

Here's a link to something similar.

 

 www.muller.net/.../howto/insert/index.html

 

However, your insert will most probably look like it has a slot for a screwdriver in the one side. That's not for a screwdriver, it is for flexing. It is also the side where the threads on the insert are designed for easy tapping.

 

Screw the whole lot in until it is flush. Remove your bolt and nut tool and screw on your brake and go for a ride.

 

Rule no 1: Patience.

 

Rule no 2: Patience

[jamis1]

Tanks for the advice JB mush appreciate it

[Johan Bornman]

Tanks for the advice JB mush appreciate it

 

It's a pleasure.

 

If you don't come right, let me know. We can make it a "project" for my students during next weekend's class. It's nice to show them something unusual.