Stripped thread on brake disc.

[Markblox]

Just replaced the 5 rusty bolts for mounting the brake disc to the hub (after using wonder wheels) and stripped a thread, must have been the loctite left in there. Put one of the old ones back in there and even though the thread looked really buggered I could do it up to 25 N instead of the 30 N required. Any advice? Is it a helicoil job and is it hard to do. Never done one before.

 

[davegs]

Disc bolt

Put it on E-Bay quick,

 

[millard]

What size are they?
I have some helocoil kits. If I've the right size you can borrow one.
Dead easy to do, just need a good battery dril.
millard

 

[ELIMINATOR]

Live with it, don't fret.

 

[Aidan1150]

I noticed some time ago that a thread in my rear brake caliper was in a poor state. A mate who is a professional bike restorer suggested that we use Wurth Timeserts to repair the damage as they are, in his opinion, much better than helicoiling. They are not cheap though.

More details here.

HTH

 

[(RIP) Kaister]

i don't think theres enough meat left on the disc spigot to use a timesert - they need a big pilot drill

helicoil would do for this

 

[Aidan1150]

i don't think theres enough meat left on the disc spigot to use a timesert - they need a big pilot drill

helicoil would do for this

Right enough. Fair point Phil.

The Timeserts are bloody good though.

 

[Steptoe]

A mate who is a professional bike restorer suggested that we use Wurth Timeserts to repair the damage as they are, in his opinion, much better than helicoiling. They are not cheap though.

they are the only thing to use on the top thread cylinder holes in an airhead block, because it also has an oil feed hole in the wall of the bore, and you can drill a timesert so the rocker gear still gets it's oil.

 

[Voyager]

I noticed some time ago that a thread in my rear brake caliper was in a poor state. A mate who is a professional bike restorer suggested that we use Wurth Timeserts to repair the damage as they are, in his opinion, much better than helicoiling. They are not cheap though.

My neighbour's 'V-Reg' 1150 GS had a stripped thread in the rear brake caliper.

I put a 10mm helicoil in and it seems fine.

Bob.

 

[Mayhem]

i don't think theres enough meat left on the disc spigot to use a timesert - they need a big pilot drill

helicoil would do for this

Curious, when I've used timeserts I found that they where the same size tap as a helicoil, the only difference being the cutting of the collar recess for the timesert
That's certainly the case with spark plug sizes as I replaced some old troublesome helicoils with timeserts without any problem

Might be different for smaller sizes I suppose

 

[(RIP) Kaister]

just to clarify for people that haven't seen them.

timeserts are solid rings with threads on the outside and inside,

helicoils are st st wire formed coils that replace the stripped thread.

timeserts are preferred choice when there is enough parent material to carry the insert - eg blocks of metal

helicoils are preferred for thinner walled areas and where weight is of importance

 

[Markblox]

What does Steptoe think?

just to clarify for people that haven't seen them.

timeserts are solid rings with threads on the outside and inside,

helicoils are st st wire formed coils that replace the stripped thread.

timeserts are preferred choice when there is enough parent material to carry the insert - eg blocks of metal

helicoils are preferred for thinner walled areas and where weight is of importance

Thanks for the advice. It seems it will be a helicoil but would like to know what Steptoe thinks. If you read this pleeeeease let me know.

 

[Steptoe]

Thanks for the advice. It seems it will be a helicoil but would like to know what Steptoe thinks. If you read this pleeeeease let me know.

Use what ever you have available ??

 

[Markblox]

ok thanks.