here i go again, bought some dynamic indicators for the rear if the bike , so 4 bolts to undo to remove the tail. two came out, two were fast and got rounded( they are allen fit) so got a bolt removing kit which is like a bit you screw in anti clockwise and when it grips you keep screwing and it brings the bolt out . but when it gripped instead of this the extractor snapped off so i have half the extractor stuck in the bolt! question is can i drill this out .i dont want to damage the thread so that a new bolt wont take .
just to add the bike is a pikes peak and i bought it as a demonstrator, it sees nearly every bolt on this thing is fast solid. or i’m too ham fisted with it
I hate to say but the ezy-out you have used is likely hardened steel so will be an absolute nightmare to drill out - ask me how I know!
Or you have a set of Allen keys? Before you do any more damage, can I suggest getting your ham fists on a set of Wera Hex-Plus HF Allen keys or Hex Plus sockets. They drive on the flats rather than the corners so they don't round out the Allen bolts. https://www.amazon.co.uk/WERA-Multi...8541380603-B06XDCDHV8-&hvexpln=0&gad_source=1 https://www.amazon.co.uk/Zyklop-Hex-Plus-Socket-Holding-Function/dp/B0757YXLFY/ref=sr_1_3?crid=5G2KOHXKA46E&dib=eyJ2IjoiMSJ9.9S8PX4e4MgbHMz6i7JZtiirFwX9ZmLX5G92vlH9UtQtSyF_5EPnQ7BJ2WQglQnBi5xxY4jxNuqMIqigo9fTYYlg0CCf2t1tbWYD_oxVfXKLxoGTrGVqvx_M-4jce2hWYqqGdvnvfKL2okZXcl-eq2kVY8379hT0SopocP9iDu8nKsJvfbeNNjIyuAmgmShEisikJ8XY08U_UCpMYJjWoMXuaEOaY4BBjfraxHILwjfc.z2nQNwzJWtMx72xkYLxiD8fZE1T9Kz8hDIy9H3-sGvk&dib_tag=se&keywords=wera+hex+plus+sockets&qid=1774647168&s=diy&sprefix=wera+hex+plus+sockets,diy,279&sr=1-3&ufe=app_do:amzn1.fos.95fd378e-6299-4723-b1f1-3952ffba15af and if you haven't got one, I'd suggest a set of wall drive sockets as well (also known as flank drive). As per @RickyX don't ask me how I know... https://www.amazon.co.uk/Wera-Zyklo...6566067725-B01BNJ0DEY-&hvexpln=0&gad_source=1
Not really, no. You’ll have to get some M42 Cobalt drill bits, they might, just, drill through the broken extractor. Those bolts do have lock thread on but they’re usually not too difficult to get out. The knack is to A) have good tools, the suggestions above are good, but look at Gripedge stuff too. b) make sure the Allen key is firmly into the bolt head, and in straight. There’s no harm and every merit in giving it a tap with a hammer to make sure it’s in, plus the shock breaks most corrosion in the threads. c) keep a very close eye on the Allen key/bolt interface and turn it slowly. If you see the Allen key moving but the bolt isn’t STOP it’s just going to round out. At that stage try hammering a Torx bit in instead. D) always always apply some penetrating fluid to the bolt first - not the bog standard WD40 or GT85 they’re not penetrants, get a professional penetrant. Left handed cobalt drill bits are also very useful.
Hi Oly, Just wondered if you had had any success with your bolts? It's difficult to add much more than has been said bit I had a similar thing recently when a high speed twist drill snapped when drilling out a stripped bolt. I did manage in the end to drill around the broken drill bit with a new bit (no more than 3mm) and was eventually successful in removing the bolt but I lost the integrity of the thread. It was simple enough to retap a new thread and I managed to sort the problem. Heat is also very useful and if you can get to the nut side of the fixing then you have a fighting chance. Do you have a photo of the location giving you the problem?
