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Any significant differences between compression plugs?

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Any significant differences between compression plugs?

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Old 03-19-08 | 12:48 PM
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Any significant differences between compression plugs?

Competitive Cyclist favors Problem Solvers. Other places I've read that FSA plugs work best. Is there really enough difference in compression plugs to matter?
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Old 03-19-08 | 01:04 PM
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Why do the call them compression plugs when the "plug" actually expands?
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Old 03-19-08 | 01:06 PM
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Originally Posted by bdcheung
Why do the call them compression plugs when the "plug" actually expands?
The steerer is compressed against the stem?
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Old 03-19-08 | 01:08 PM
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Then why not call it a compression cap? Or an expansion plug?
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Old 03-19-08 | 01:08 PM
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Originally Posted by bdcheung
Why do the call them compression plugs when the "plug" actually expands?
because it compresses itself against the surface it expands into?

edit: i would say that's a better description then 'expansion plug' because the purpose is not to expand, but to cause compression
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Old 03-20-08 | 11:14 AM
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Originally Posted by Pendergast
Competitive Cyclist favors Problem Solvers. Other places I've read that FSA plugs work best. Is there really enough difference in compression plugs to matter?
Not much. It's a simple design Weight is about the only difference. Some weigh over 50 grams. I use an Extralight Ultrastar from Fairwheel Bikes, 9 grams and works great.
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Old 03-20-08 | 12:53 PM
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Originally Posted by bdcheung
Why do the call them compression plugs when the "plug" actually expands?
I think the reason is because the purpose of the plug, and the cap is to compress the stem down on the steerer tube, to preload the headset bearings.

As for function, all its got to do is 1) not damage the steerer, and 2) hold the stem down on the steerer, until you tighen the stem.

So I'd agree the lightest that works would be preferable.
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Old 03-20-08 | 01:05 PM
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How much does it weigh?
 
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Weight is also a consideration, if you're the type that is interested in that target. (I am, for one).

You can set the bearings with a regular compression plug, remove it and replace is with Tune "Gum Gum" and a custom top-cap of your choosing.

Tune "Gum Gum" is really good - and light. It won't damage the carbon steering tube and it's removable.
Extralight also makes a good rendition of their own, but it's damn pricey. It's the aforementioned "Ultrastar"

See the weightweenies forum for recommendations via a search.
Also, see what the options are at fairwheelbikes.com - that would give you a good measurement of the options available to you for light-weight parts.
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Old 03-20-08 | 01:12 PM
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The no-name looking one that came with my frame was junk, and seized during installation. Upon closer inspection it really was junk. The threads were not cleanly machined. I replaced it with a wheels manufacturing compression plug, and ti installed fine. I hear the FSA ones are also pretty good.
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Old 03-20-08 | 01:49 PM
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Originally Posted by Sirrobinofcoxly
The no-name looking one that came with my frame was junk, and seized during installation. Upon closer inspection it really was junk. The threads were not cleanly machined. I replaced it with a wheels manufacturing compression plug, and ti installed fine. I hear the FSA ones are also pretty good.
Pretty good and heavy and not all that cheap either. Why have something so heavy if it's purpose has been served after the stem has been torqued?
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