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Old 10-22-10, 08:25 AM   #1
ultraman6970
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Head tube question

I started making my molds for a set of carbon tubes, so far i have the top tube and the chain stays ready to go but im wondering that to do with the head tube. I been trying to locate a broken bike with a 1 1/8 integrated headset but nothing has come by at ebay or CL. So i was just wondering if this one is ready to go for a 1 1/8 headset or it needs to be reamed to specification? anybody knows?



If the answer is no, anybody knows if some store is selling one?

Thanks.
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Old 10-22-10, 09:50 AM   #2
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Nova is run by some really nice people, and I'm sure they would be happy to answer any questions. My guess is that the answer is no, but it would be worth asking.
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Old 10-22-10, 09:57 AM   #3
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Actually, I think those are ready to go.
I don't think they need any additional facing.
I would ask Nova first to be safe though.
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Old 10-22-10, 10:19 AM   #4
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Thanks.. I'll give them a call
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Old 10-22-10, 10:29 AM   #5
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I bought one a few years ago but it's still in my parts bin.
I can't specifically remember asking them (the spring on my mind's steel trap is a little loose), but I think they are good to go.
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Old 10-22-10, 12:20 PM   #6
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Which size is the one u have in there? Would you take a look? Called and the girl did not know so i sent an email to the techy guy, the other thing is that im so lucky that the size I like is out also hehehe
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Old 10-22-10, 05:13 PM   #7
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FWIW, the steel version of those headtubes needs to be reamed to spec.
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Old 10-22-10, 05:26 PM   #8
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Quote:
Originally Posted by ultraman6970 View Post
Which size is the one u have in there? Would you take a look? Called and the girl did not know so i sent an email to the techy guy, the other thing is that im so lucky that the size I like is out also hehehe
Sorry, I have the 115mm and not the 145.
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Old 10-22-10, 06:03 PM   #9
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Allen the tube is already chased or it needs to be chased?

115? hmmm darn too small lucky me

Wonder who else has them.

Last edited by ultraman6970; 10-22-10 at 06:06 PM.
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Old 10-22-10, 06:07 PM   #10
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Good to know live.. thanks
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Old 10-22-10, 06:13 PM   #11
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now that I think about it, I assume the intended purpose for those tubes is to be welded into a frame. If that is the case, it almost surely is not reamed -- you wouldn't want it reamed because of distortion. I can see how pre-reamed would be nice with adhesive assembly. Then again, any decent bike shop can ream it for you.
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Old 10-22-10, 06:41 PM   #12
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I saw what u said before asking here, but my only complain about shops is that they charge so much for 5 minutes of their time. The headtube is 50 bucks and for sure any lbs with the darn tools will ask 50 (i *****ed about something similar a few months ago), the idea is to keep it cheap hehehe.

Wonder if i can make a mold of any of my bikes and built a cup in carbon with the shape of the races and epoxy it to the head tube. My kuota has like glued aluminum cups in the headset.Do they sell the races, right?
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Old 10-22-10, 11:51 PM   #13
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^^^^
Last time I had a bottom bracket chased at the LBS I brought my bike in with a Sam Adams sampler 6 pack.
$0 charge on the labor.

Anyway, however you look at it $50.00 for the labor < several hundred $ for a head set chasing tool.
Also trying to mold something to 1/100th of an inch tolerance > $50.00 labor.
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Old 10-22-10, 11:55 PM   #14
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hehehe anybody with a broken aluminum frame moving around?
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Old 10-23-10, 11:08 PM   #15
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Ok I found the answer.

The easiest way to attach the problem is to use a head tube in any material with an internal diameter of 43.5 mm and use a semi integrated headset press to it. Some of these headsets have 44 mm cups.

Second option, find a head tube in carbon with an ID of 1.495 inches and epoxy a paragon titanium insert they sell that allows me to use any semi integrated headset.

Here is the link just in case

http://www.paragonmachineworks.com/s...-10468843.aspx

For 8 bucks is not that bad idea.
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Old 10-27-10, 06:56 PM   #16
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OK cant find the darn tube, anybody has one? hehehe
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Old 10-27-10, 07:23 PM   #17
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I have one of those Columbus aluminum tubes in my parts bin as well. I had thought they were intended for integrated headsets, but they are designed to fit a Columbus headset that is not your typical integrated HS. I had purchased it to wrap into a carbon build, but pitched it in the bin when I discovered I had not done my homework before I ordered.
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Old 10-27-10, 08:41 PM   #18
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Thanks Dancingbear, ideas where to get a tube in 44mm ID so i could use a semi integrated headset? I'm going to end up buying the closest one to the size and sand it big time hehehe
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Old 10-28-10, 07:07 AM   #19
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Metal Supermarkets carries everything you could need for headtube material.
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Old 10-28-10, 10:28 AM   #20
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Thanks a lot Canaboo... im looking right now but found another solution, like 2 bucks. PVC 1.5 inches slide couple fits perfect a regular 1.5 headset espec. hmmm... chris king inset... hmmm....

Last edited by ultraman6970; 10-28-10 at 10:32 AM.
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Old 11-01-10, 10:53 AM   #21
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Ultraman;
I tried to reply to your PM, but I need to have more posts to get into the club. Apologies for the delay responding. I have one of the pictured AL headtubes in the original post. The ID at both ends is 39.6 mm. OD is 45mm, 2.7mm wall. the OD tapers in the middle of the tube to 38mm. The one I have is 175mm in length. It's yours if you can use it, and throw me a bone for postage.
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