rounded allen bolt on brake calipers

[Schooner]

Use an easy out. These were a quick google. Easiest way to remove any rounded hex bolt.

 

[yello]

The saddest thing is that it is depriving someone of using her bike, especially given the recent lovely weather. Also the more people on bikes the more recognition from car drivers hopefully and the improvement to our nations health.

I wouldn't disagree with any of that. I don't know why you quoted me to say it though

 

[Jmenorton]

Use an easy out. These were a quick google. Easiest way to remove any rounded hex bolt.

I used one of these on a tiny rounded screw in the my shifter, worked a treat, although mine wasn't a hex bolt

 

[172traindriver]

I wouldn't disagree with any of that. I don't know why you quoted me to say it though

Just hit reply dude, seems easier at times

 

[yello]

ok, no worries

 

[Svendo]

Cutting a slot for a flat screw driver has been mentioned above. A similar alternative I've used on a seized and rounded bottle cage bolt was to file opposite sides flat to enable adjustable spanner (or better still mole grips) to get lots of purchase, which worked. Also WD40 or penetrating oil on the bolt forst to reduce the force needed, which probably caused the rounding in the first place (along with lack of mechanical sympathy from a so-called professional.)

 

[yello]

A similar alternative I've used on a seized and rounded bottle cage bolt was to file opposite sides flat to enable adjustable spanner (or better still mole grips) to get lots of purchase, which worked.

Yes, I'd forgotten that one! Works a treat

 

[billflat12]

GT85+impact driver/forced-bit. ( or chisel head anti-clockwise with old screwdriver or punch to the outside of the bolt head)

 

[stuart smith]

thx for all the suggestions guys, sorry for the delay in replying, i'm on day 11 of 12 of a charity bike ride and not had time to get online. some great suggestions for getting it sorted, some won't work because of how the small bolt head sits within the caliper around it. i've got a good couple of options though, think between the hammered in torx bit/glued in allen key/screw-bolt extractor i'll get it out, just gotta find some spare tektro bolts now.

Very disappointed in the mechanics behavior, i think as he's given the bike back not admitting what he's done i've no chance of getting him to put it right, and for a little fix and the cost of a bolt i'll get the job done myself now. The breaks have started squeeking in a vibrating was now too since he's 'cleaned' the pads so i'll be posting on that soon if i can't find an answer in the forum.

THANKS AGAIN