Like everyone has said, all good ideas, il just go thru my list of what i always try a lot will be duplicated but hey ... -if its a fairing bolt with a shoulder to stop it cracking the plastic when tightening down, id be tempted to give an impact driver a go, im always using mine. just make sure you dont break the bracket/lug its mounted to -soak the threads in wd/plusgas and give it another go (try squirt some from behind too into back of threads) -drill it and use a stud extractor -slot the head and use a flathead -most of the time ive found that not enough pressure onto the head itself causes 'mashing' so i have also used a screwdriver with a square shaft, used all my strength to push the driver into the bolt head then got an adjustable on the screwdriver shaft to turn it. Also some socket sets have screwdriver attachments and a ratchet with a screwdriver bit on can work -a screwdriver on top with mole grips on the back of the bolt (turning same way obv.) -freeze spray to shrink the bolt a bit (very hit and miss) -you can actually get reverse spiral drill bits, so it drills in and tries to unwind at the same time -put screwdriver into head and tap it with a hammer, sometimes releases it enough to get out -If its a fairly big head it could be tapped round with a hammer and centre pop/small chisel but this can be a tricky method All else fails get someone else to do it for you
you could call these guys out, if you can find them /plays A-Team theme.....) http://www.sparkeroding.co.uk/ yeh ok it would probably cost a fortune but it would be cool as fk getting someone to set up a massive spark eroder just to get a tiny screw out lol or you could buy your own http://www.ebay.co.uk/itm/HURCO-425-Spark-Eroder-Hurco-30-10-pj16-/200712742647?pt=LH_DefaultDomain_3&hash=item2ebb6966f7 you'd have to take it to bits to get the bike to fit under it, but i'm sure its one of them handy tools thats worth having in the garage just in case
I find swearing, beer and usually a fair amount of skin and blood usually helps. Other than that, cutting a slot or two and trying a screwdriver head on a socket, and if not that then drilling and using a stud extractor (but I absolutely HATE them lol!). Good luck!
big hammers and ale is fun , but get in touch with dave fischer he works at machine mart in chester they have some great tools for the removeal of offending bolts and screws.
When heating up spray with WD40, it might not shift the bolt but running round looking for some water to put the burning electrics out, will take you mind off it. :flame: And always use a bigger hammer.
Got 3 of the 4 stubborn bolts out, with the 2 on the mudguard I grinder some corners on the rounded bolt and twatted a socket on with no problems. One of the others surrendered with the plus gas! sadily the final one won't budge at alland the Allen key head is now a perfect circle. Cant get to it with the dremel to put some corners on it a bigger torx bit won't fit on it or even make a dent on it so will pick up an easy out tomorrow and try again.