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disc bolts snapped
Posted: Sun Feb 19, 2012 3:07 pm
by Deviant400
ok so thought id threadlock my disc bolts , upon tightning them up ive snapped one

, god knows how, didnt think id put that much force on it , so whats the best method for removing it , not much thread showing if any, and ive had enough for today so by this time tomoz the locker will have gone off, (its non permanent of course)
Re: disc bolts snapped
Posted: Sun Feb 19, 2012 3:39 pm
by micpec
if there is little thread left, maybe a small locking tool plier can be used to get the remaining thread out?
Re: disc bolts snapped
Posted: Sun Feb 19, 2012 5:12 pm
by Morespeedvicar
You could try warming it up with a blow torch, will help melt the thread lock and cut a slot in and use an impact driver to get it out, or weld a nut on, tho i've never tried this.
Cheers
Ian
Re: disc bolts snapped
Posted: Sun Feb 19, 2012 6:10 pm
by CRM
been there done that - or should i say i purchased a wheel and disks (from someone who shall remain nameless) with one disk bolt snapped off, to be ground down a tad and glued back on - yes glued
Some quality stud extractors, heat to expand the alloy a bit, and slowly drill the centre out and use a stud extractor again with some local heat on the alloy - and out it comes.
Re: disc bolts snapped
Posted: Sun Feb 19, 2012 6:23 pm
by Deviant400
sighs, yea my own stupid fault just now im thinking ill replace the lot now as there a bit old and the chances are ive overtightened the bloody lot so as soon as i wang the anchors on pop pop pop go the heads then certain death ,
my question is ... new disc bolts from david silver comes to about £30 odd quid but stainless from pro bolt are like £60+ , but bolt me up do allen cap bolts in a2 stainless for a fraction , anyone used them ??
"edit" i mean is there somthing special about disc bolts that i need to know like are they super hardened or owt
Re: disc bolts snapped
Posted: Sun Feb 19, 2012 9:29 pm
by CMSMJ1
5 bolts will do....
Re: disc bolts snapped
Posted: Mon Feb 20, 2012 12:20 am
by lizard821000
Deviant400 wrote:sighs, yea my own stupid fault just now im thinking ill replace the lot now as there a bit old and the chances are ive overtightened the bloody lot so as soon as i wang the anchors on pop pop pop go the heads then certain death ,
my question is ... new disc bolts from david silver comes to about £30 odd quid but stainless from pro bolt are like £60+ , but bolt me up do allen cap bolts in a2 stainless for a fraction , anyone used them ??
"edit" i mean is there somthing special about disc bolts that i need to know like are they super hardened or owt
if anything mate they tend to be a softer metal, so a lower tensile strenght like 8.8 or 10.9, allowing them to flex . thats why they can easily be over tightend as the 8 and 9 reffure to the max %...so 80% and 90% they should be torqed too so the bolt is working at its strongest. thats why these bolts should never be reused once torqed then removed.
iv never used stainless on any parts that need this slight flex to accure, such as the disc bolts,caliper bolts, sprocket bolts etc......although pro bolt wouldnt sell them if they wernt safe, but you should deffo use a locking agent like loctite or thread wire them together.
Re: disc bolts snapped
Posted: Mon Feb 20, 2012 9:18 am
by thunderace
Re: disc bolts snapped
Posted: Tue Feb 21, 2012 8:24 am
by lukemillar
Re: disc bolts snapped
Posted: Thu Feb 23, 2012 9:30 pm
by dogmatic69
lizard821000 wrote:if anything mate they tend to be a softer metal, so a lower tensile strenght like 8.8 or 10.9, allowing them to flex . thats why they can easily be over tightend as the 8 and 9 reffure to the max %...so 80% and 90% they should be torqed too so the bolt is working at its strongest.
What is this 8.8 or 10.9 you are talking about? Last time I checked tensile strength was measured in MPa and stainless steel is 500+