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Stripped the headset bolt what?(21 posts)

Stripped the headset bolt what?hirevR
Sep 18, 2003 3:28 AM
I have a thompson stem and I was fiddling witrh stack height last night when I went to loosen the second bolt head and it was stripped. I tried some drill bit s that I had to see if I could drill it out but I couldn;t. the stem has another one that came out fine, but this sucker it tightly in there. Any ideas on how I can get it out? JUst to clarify, this is not the top cap but the stem tightening bolt (and it is recessed. thanks in advance.
Couple of things to try.the bull
Sep 18, 2003 3:41 AM
Try opening the slot on the stem with a pry bar while you twist on the bolt that is allready stripped.
The force could make the bolt back out.If the treads are stripped it should not have as much clamping force.

Cut the bolt in half with a dremel tool through the slot of the stem.
Good luck!
put the other bolt back in and tighten it as far as it will go..Spunout
Sep 18, 2003 3:48 AM
that will reduce the force on the stripped bolt. Then try a bolt-remover(those reverse threaded thingys) to get it out.

New bolts are available from your Thomson supplier. Buy some new allen keys while you are there!
re: Stripped the headset bolt what?Steve_0
Sep 18, 2003 4:14 AM
is the thread stripped, or the head?

If the head is stripped, get a screw extractor; made for just such occassions. If its the thread, the above mentioned methods shoud work.
It;s the headhirevR
Sep 18, 2003 5:33 AM
thanks for your suggestions folks. there is also a great post about this here:

I think i am going to try the screw extractor thingy. Thanks again for all of your help.
This has worked for mecmgauch
Sep 18, 2003 6:37 AM
If you have sockets w/allen wrench heads, take the next larger size (might have to go w/amer. size) and beat it in w/a hammer. Between that and putting the other bolt back in tightly, that might work w/out resorting to a bolt extractor.

This also works w nuts/bolts w/rounded edges, but use the next smaller size socket in that case.
differences in perspective...Steve_0
Sep 18, 2003 6:46 AM
to me, using an improperly sized tool and beating w/hammers is more of a 'resort' than simply utlizing a tool designed for the job.

Just goes to show, different strokes, and more than one way to skin a cat.

BTW - this is appearing to be less than uncommon with the new threadless 'technology'. Almost makes we want to stock up on the old, reliable quills before they're gone forever, but I know mines good for another 1/2 century, at least.
Agree with Steve here.the bull
Sep 18, 2003 7:57 AM
Just get a tread extractor.You can probally fit one on the stripped allen hole that will grab it enough.
I have a Snap-on set that works exellent with reverse drill bits but a Craftsman one will work fine.
I did not understand your post at first.
PSthe bull
Sep 18, 2003 7:59 AM
If your going to hit anything in there hit a torx bit it will grab better than an allen.
STOP IT!Steve_0
Sep 18, 2003 8:15 AM
As a snap-on owner, you shouldnt even be IMPLYing such heresy.

as bad as my wife. "Um, honey, that Facom breaker is NOT a hammer. Oh, and here's your new personal tool kit, complete with chisels (screwdrivers) and wrenches (pliars)"
quill stem suggestions?..TNSquared
Sep 18, 2003 9:49 AM
just bought a used bike with an 1" threaded headset. The stem is a profile h20. It is functional for now, but it is really about 1cm too short for me, and - shallow as it sounds - it's the ugliest thing I've ever laid eyes on.

Any recommendations for a good solid quill stem? I've been shopping around and they seem to be getting scarce. What are you using, or what would you stock up on if you were going to do so? I'd prefer something with a removable face plate for convenience, but that's not an absolute requirement.
Sep 18, 2003 9:54 AM
makes a nice steel quill. Running it on my track bike. All black with their logo and a gold cap, very chic.
quill stem suggestions?..Steve_0
Sep 18, 2003 10:09 AM
nitto. Extremely sound (nitto has exacting standards). Beautiful finish and lines. The nitto technomic deluxe has a lot of height adjustability.

No removeable faceplate, though. Truly, for road bars, I dont see the convenience, because of the whole brake lever issue.
Sep 18, 2003 2:02 PM
you're probably right - it's just that a removeable flaceplate/barclamp is what I'm used to. Off the bike, I'm adamant about reserving energy (i.e. real lazy) and twisting the bars around to get them through an "old-style" quill just seems like so much effort. :-)

thanks for the suggestion, I'll take a look at the nitto - sounds like a really good stem.
2nd the Nitto Technomic quill stem ...MrDan
Sep 19, 2003 9:28 AM
available at , many sizes, super height adjustment, solid, simple.

I am in no way affiliated with lickbike.
thanks! I shop at lickbike often...from Tennessee!TNSquared
Sep 19, 2003 12:52 PM
My vote goes to TTT (3T). nmthe bull
Sep 18, 2003 1:00 PM
quill stemstoomanybikes
Sep 18, 2003 4:02 PM
I have a Deda Logo, a Cinelli XA and a Cinelli 1X. All good stems though the DEDA is easier to open and get the bars out through.

In terms of the stripped bolt above why not put some epoxy, superglue or weldbond in the bolt head, set your allen or torx into it and let it set up a bit. reverse the bolt and put some pressure on the other end - use a real thin screwdriver or awl to push - should come out easliy.
This has worked for me--Make that me 2!hirevR
Sep 18, 2003 8:17 PM
i didn't like this idea. at all. i am a bit too meticulous for this. so i purchased two sizes of screw extractors and began drilling. nothing. they wouldn't even make a dent. carbide tips and all. so i tried this technique involving il-sized allen sockets and hesitatnt hammering. holy sh!t if if didn't work. i take everything back. thanks for all of the tips! btw-i screwed in the other side's bolt to help reduce the stress of the clamp. the only bad thing of the entire ordeal is that I had to by a new stem clamp b/c the hammering ruined the threads and it'll take a week or more to get one from a bike shop. oh well, better than a ruined $90 stem.
thanks again-dave
Sep 18, 2003 8:19 PM
thomson's website has it stated that the extractors won't work. it's in their faq section. i guess i should've read that first!
This has worked for me--Make that me 2!cmgauch
Sep 19, 2003 8:27 AM
I'm glad I could help.