!HELP! Disc Brake Dropouts Threaded !HELP!

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!HELP! Disc Brake Dropouts Threaded !HELP!
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flag road-psyclist
Posted: Apr 21, 2012 at 7:27 Quote
My friend has threaded the disc brake dropouts on his fork.


Question is, will he be able to drill new threads? And what drill end will he need to use?


Also, will he have to drill a hole 1mm thicker than the old threads?


Thanks in advance.
flag Canadmos
O+ FL
Posted: Apr 21, 2012 at 8:45 Quote
Why would he need to drill them out? Just use a bolt that will fit the holes that are already there...
flag road-psyclist
Posted: Apr 21, 2012 at 8:45 Quote
EDIT: Thanks for the reply. It's what one of my other friends said to do.
flag road-psyclist
Posted: Apr 21, 2012 at 8:50 Quote
Plus the thread have gone so the bolt just keeps spinning and spinning.
flag lely-pie
Posted: Apr 21, 2012 at 10:04 Quote
could tap the hole and insert a heli-coil to bring it back down to the right size. Or just use a threaded insert like this:

Unsecure image, only https images allowed: http://www.masterbuilding.net/v/vspfiles/assets/images/threaded%20insert%2067%20torx.jpg
flag road-psyclist
Posted: Apr 21, 2012 at 10:06 Quote
Cheers, I'll tell him about that.
flag dkidd
O+
Posted: Apr 21, 2012 at 10:36 Quote
is this a post-style brake mount, or a IS-mount that's picked up threads from the bolt going through?
flag road-psyclist
Posted: Apr 21, 2012 at 11:03 Quote
Not sure on that, I'll ask him.
flag road-psyclist
Posted: Apr 21, 2012 at 11:56 Quote
Post mount by the looks of things?

photo
flag cyfa89
Posted: Apr 21, 2012 at 12:09 Quote
Im not sure id trust a helicoil as once drilled out it doesnt leave much around the outer (2mm approx.).

Some people have done it though.
flag road-psyclist
Posted: Apr 21, 2012 at 12:36 Quote
What's the chance of him needing a new fork? lol

I'm guessing it's more likely than him repairing it?
flag cyfa89
Posted: Apr 21, 2012 at 12:43 Quote
You can get helicoil kits from ebay for around £20 or so.

What fork is it? A reba?

As i said, some people have done it and i have seen threads where 'engineers' have recommended it to them. As an engineer though lol i personally wouldnt trust it myself, not for such a critical place.
flag road-psyclist
Posted: Apr 21, 2012 at 12:55 Quote
It's a Tora SLIte which came on a Rockhopper Comp 2010. And guessing it could split it with a helicoil kit?
flag cyfa89
Posted: Apr 21, 2012 at 12:57 Quote
Ah the tora's arent too bad.

Yeah i reckon it could, especially if your not amazing with a drill or tap (although both pretty simple to use, need to be delicate still).

Id say tell him to save up but buy a kit and have a go anyway? lol
flag road-psyclist
Posted: Apr 21, 2012 at 13:04 Quote
He's only 15 and not sure if he's willing to do it as he won't be able to get a replacement fork if he messes it up.
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