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Old 11-15-07, 12:28 AM   #1
coweater
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Threadless Adapter + Threadless Extender

I'm probably asking for trouble, but in my searches so far I haven't been able to find a taller quill stem with a long enough extension.

My bike has a 1 1/8" steerer, and 25.4 mm handlebars. My current stem is an adjustable model with about 60mm from minimum insertion to center and a 120mm extension set at 15 degrees positive rise. I can get the height I want by moving it up to 45 degrees, but then I lose the reach.
Picture of my stem.

Anyhow my "best" idea so far for getting things where I want them without a new fork and such was to use a threadless adapter like this Nashbar model and then use a threadless extender like this one by delta.

If anyone has any tips on a good stem I'm still open to that, but otherwise I'd like to know if this is reasonable and safe. I'm primarily concerned that (I think) the extender attaches to the star nut of a normal threadless setup, but I'm thinking the clamping bolts will probably be enough to hold it in place anyhow. Any thoughts/experience?

Last edited by coweater; 11-15-07 at 01:52 AM.
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Old 11-15-07, 01:38 AM   #2
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I'm sure it'd be safe enough, but that sounds like a lot of stuff to buy.

What kind of handlebars are those? It looks like they wrap back around and the shifters/brake levers are closer than they'd be with regular flat/riser bars. Can you post a wider pic of the setup? If you can get the shifters/brake levers in a better spot, you might be able to use your existing stem in the 45-degree position while keeping the reach the same.
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Old 11-15-07, 01:51 AM   #3
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Originally Posted by coweater View Post
I'm probably asking for trouble, but in my searches so far I haven't been able to find a taller quill stem with a long enough extension.

My bike has a 1 1/8" steerer, and 25.4 mm handlebars. My current stem is an adjustable model with about 60mm from minimum insertion to center and a 120mm extension set at 15 degrees positive rise. I can get the height I want by moving it up to 45 degrees, but then I lose the reach.
Picture of my stem.

Anyhow my "best" idea so far for getting things where I want them without a new fork and such was to use a threadless adapter like this Nashbar model and then use a threadless extender like this one by delta.

If anyone has any tips on a good stem I'm still open to that, but otherwise I'd like to know if this is reasonable and safe. I'm primarily concerned that (I think) the extender attaches to the star nut of a normal threadless setup, but I'm thinking the clamping bolts will probably be enough to hold it in place anyhow. Any thoughts/experience?
your links don't work for me.

ed rader
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Old 11-15-07, 01:52 AM   #4
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They're butterfly/trekking bars. The shifter brake combo won't make it around a bend and there's really not enough space up front for them anyhow.
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Old 11-15-07, 02:05 AM   #5
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OK, I've seen those. I'd suggest something like this, http://cgi.ebay.com/Scott-AT-4-aero-...QQcmdZViewItem, but it might be hard to find cheap.
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Old 11-15-07, 02:12 AM   #6
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http://cgi.ebay.com/New-Alum-Treking...QQcmdZViewItem

That'd give you a few hand positions and your shifters should be able to make it around the bends.
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Old 11-15-07, 04:28 PM   #7
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.... I'm primarily concerned that (I think) the extender attaches to the star nut of a normal threadless setup, but I'm thinking the clamping bolts will probably be enough to hold it in place anyhow. Any thoughts/experience?
The center bolt of the threadless adapter tightens the wedge ala a quill stem, and at least on the 1" to 1" (Nashbar/Profile Design) ones I've used the top cap is wider than the "quill" so that it overlaps the top of the stem. The 1 1/8" model may use the same cap and not have an overlap - as appears in the pic. I'm not sure. If you used a really long center bolt you could make it work in any case.
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Old 11-15-07, 05:23 PM   #8
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I was just at the LBS and I noticed a really long threaded to threadless adapter.
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