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Old 01-20-14, 06:23 PM   #1
steve-in-kville 
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Quill Headset Adapters: No spacers needed?!

I want to convert an older bike from quill to one of these:


http://www.nashbar.com/bikes/Product...45_-1___202442

So since there is no headset to compress, I would just need to clamp the stem onto the adapter? No need for spacers, right?
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Old 01-20-14, 06:26 PM   #2
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Right!

Little detail, put some spacers under just in case you need the stem upper a little bit just because of looks
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Old 01-20-14, 06:29 PM   #3
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Thanks!
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Old 01-20-14, 07:53 PM   #4
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Yeah, there is no mechanical need for spacers any more than you need spacers under a quill stem. Once the stem is tight on the adapter and the adapter tightened in the steerer, nothing is going to move.

However, just for appearance you may want to stack spacers below the stem and above the headset locknut. I've done that on a bike with a threaded steerer/headset, the adapter you show and a threadless stem. it makes it look a bit more like a true threadless setup. Doesn't fool anyone who notices the headset locknut but it does look a bit better.
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Old 01-21-14, 02:32 AM   #5
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I'd say that if there's somewhere to screw in a preload bolt, then the spacers could have a mechanical job increasing the effective diameter of the steerer between the upper bearing and stem.
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Old 01-21-14, 11:00 AM   #6
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I'd say that if there's somewhere to screw in a preload bolt, then the spacers could have a mechanical job increasing the effective diameter of the steerer between the upper bearing and stem.
Won't work in this particular case unless you change the adapter's top cap. The adapter has a full length bolt that pulls an expander wedge just like a standard quill stem. The top cap on the adapter is removable but has an outside diameter exactly the same as the body so a threadless stem will slip right over it and the cap doesn't put any load on the stem. A larger diameter top cap that overlapped the stem would allow a bit of preload.
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Old 01-21-14, 09:43 PM   #7
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I'd bother; if it's going to look stiffer, why not be stiffer too?
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Old 01-22-14, 09:27 AM   #8
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I'd bother; if it's going to look stiffer, why not be stiffer too?
That's what she said.
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