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Post by Deleted on Jan 11, 2012 22:26:10 GMT
I have a stripped post mount on a fork and I need it heli coiling, re-tapping it isn't an option, as there's nothing left in there. Anybody know anyone local? Cheers Sam
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Post by freedi on Jan 12, 2012 11:39:32 GMT
It really isn't that difficult to do yourself if you can get hold of the tool. My last car decided to part company with a spark plug one day. I bought the re-threading tool and a load of the coils in a kit from a specialist tool supplier and sorted it in an evening. The hardest part is having confidence that you're doing it right and taking your time (and in my case removing all of the swarf from the cylinder bore!) Re-threading forks should be easier than a cylinder head done in-situ and you'll probably need to stick them in a vice. Google search results for the kit you need, just make sure you get the one that is the right size for the bolts you're using.
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Post by Andy Mac on Jan 12, 2012 13:01:58 GMT
All you need to know is the original size and thread type it will more and likely be a unf thread or possibly metric fine
Go along to jr websters (bangor) and ask for a recoil kit of that size. Comes with oversized tap and recoil inserts
Prob in the region of about 40 quid
Good luck
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Post by Deleted on Jan 12, 2012 20:24:06 GMT
hmm cheers for the advice guys. I'm a student though and don't really have a garage full of tools (such as a vice), will i really need anything or just the kit? Or is it easier/cheaper just to find someone who can do it for me?
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Post by Andy Mac on Jan 12, 2012 22:44:47 GMT
Just had another look at the size of your bolts, probably m6 x 1 (standard metric)
Wont be quite as expensive. Ring around a couple precision eng companys and tell
them the size of the bolt , you shouldnt have a problem . Just make sure you take
Of the bolts with you so they can confirm the right size.
Its a 5 min job dont let them take the wee wee
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Post by Deleted on Jan 12, 2012 23:24:33 GMT
Ok, cheers!
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Post by thistle on Jan 13, 2012 7:29:34 GMT
Aren't there any workshops for the engineering/science/product design students where you could use the vice? I made friends with the workshop technicians (met them through cycling) and they would make cranks and spokes in return for beer
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Post by Trailrash on Jan 13, 2012 9:25:21 GMT
I have a stripped post mount on a fork and I need it heli coiling, re-tapping it isn't an option, as there's nothing left in there. Anybody know anyone local? Cheers Sam I did something similar with my front fork brake mount and just took it to work and got one of our engineers to drill it out and refit a new pre-cut thread with locktite worked a treat Just out of interest, what's heli-coiling? Oh, and yup, it was only a 5 min job.
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Post by Andy Mac on Jan 13, 2012 12:40:23 GMT
Its when you havnt got enough tread left to re tap , you have to use an oversized tap then you put the original thread back in ... This is the helicoil or recoil insert ... Hey presto you now have a thread fit for its intended use
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Post by Deleted on Jan 13, 2012 13:42:49 GMT
Aren't there any workshops for the engineering/science/product design students where you could use the vice? I made friends with the workshop technicians (met them through cycling) and they would make cranks and spokes in return for beer I don't know if there are any engineering etc courses here! (or at least not that sort of engineering anyway, don't think the electronic engineering labs are going to be much use to me )
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Post by Trailrash on Jan 13, 2012 23:48:13 GMT
Its when you havnt got enough tread left to re tap , you have to use an oversized tap then you put the original thread back in ... This is the helicoil or recoil insert ... Hey presto you now have a thread fit for its intended use That's exactly what we did in the workshop! Just didn't realise that's what ya call it Thanks for that.
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Post by seismic on Jan 16, 2012 21:41:43 GMT
If you are at the UNI try the workshops at the marine science dept. They used to have lots of stuff like that to mend boats etc. If not try your local back street garage, they will probably have all the kit.
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