[Closed] Rotor bolts

drill them out?

Stud extractors are cheap and quite easy to use, you just need a drill.

http://www.robertdyas.co.uk/product.php?product_id=149963&source=froogle

Good luck with that! [u]If[/u] you are able to drill into the sheared bolt centrally (or drill into it at all) you are doing WAY better than I ever could. I'd suggest that you take the hub to a good bike mechanic/ local engineering workshop.

Thanks guys I will head down to BnQ and get some of them drill bits.

Awaits next post- "I have the broken off tip of a bolt extractor stuck in my broken off bolt".

Have you got the rotor off? Is there any bolt sticking out of the hub? Also, can you lay hands on a dremel? Best approach if the answer to these is yes, is to carefully cut a slot across the top of the broken bolt and use a screwdriver on it. Way more reliable than a bolt extractor, and also whacks a load of very localised heat into the bolt to unseize it a little. (you can cut a slot with a hacksaw, but that doesn't do the heating up thing)

Good penetrating oil beforehand may help too- GT85 works surprisingly well if you don't have Plusgas.

If you can scrounge a Dremel, score a groove across the top that you can get a flat head screwdriver in. You may possibly be able to do this with a hacksaw but it's easy to **** up the remaining bolt shaft head, a Dremel will do it cleaner and quicker.

I've done this a couple of times. I had rotor bolts that fitted perfectly in a hub that had bottomless holes for the bolts. Then a new hub had a closed end on the holes that weren't deep enough for the bolts and of course I kept on tightening... doh. What an idiot.

Experience - that thing you get just after you needed it.

One word:

centrelock

or grease.

there we go Northwind has it spot on.

Don't panic this is fixable without big dramas.

Here's a Dremel: [img] [/img]

pic from [url= http://www.dansdata.com/tools.htm ]here[/url]

Use it as an excuse to buy a new wheelset 😉

When you next assemble one of these, use grease with the Shimano triangular torx bolts and the alloy paired-washer-folding-tags.
The tags guarantee the bolts will not loosen and the grease allows you to get the bolts out easily.

Cheap, reliable, lightweight....sorted.

I know....black torx bolts are not bling...

PaulD

The grease will quickly dry out due to the heat from the brakes, copper slip would be a better option.