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does an expander plug and top cap in carbon steerer tighten?(5 posts)

does an expander plug and top cap in carbon steerer tighten?jimcav
Jun 29, 2003 9:42 PM
Thanks to this forum, I found out I needed an expansion plug and top cap so I could put a stem on my ouzo fork with a carbon steerer tube. but it does not get tight like a star fangled nut. is that okay? seems like the stem is the only thing on tight.
not OK...C-40
Jun 30, 2003 5:54 AM
If you did not buy a Reynolds expanding plug, it may not work properly. There is no standard for the ID of a carbon steering tube.

The plug should expand tightly, to insure that the top cap can be tightened to eliminate all play in the headset bearings. Otherwise, how would you adjust the headset? The stem clamp bolts are tightened last to hold the headset adjustment.

Try for basic mechanical info.
not OK...jim cav
Jun 30, 2003 7:17 AM
Thanks c-40, I will try again, it is the reynolds expander and cap that is supposed to go with the ouzo pro. I will get a torque wrench to make sure I did the right tightness.

Does your user ID mean you ride a C-40?
I just got one on ebay but have not set it up yet.
Jun 30, 2003 8:02 AM
I've been riding a C-40 for the last 4 seasons. Had a 55cm for two years and now have a 54cm.

Be very sure that your C-40 has the colnago expanding plug. It's one of the best. The plug has an internal hex that expands the plug. The top cap bolt fits inside the internal hex and pulls the top cap down. Works great.

Colnago forks are all have 1 inch steering tubes, not 1-1/8".
thanks..jim cav
Jun 30, 2003 12:58 PM
The c-40 I got on ebay is not the subject of my question. It is an older model with steel fork and record 8 speed group, shamal wheels. Looks great, and I just wish I did not need a shorter stem--it has a colnao quill stem, but is too long. So as soon as I get a new stem, I'll get out htere on it--can't wait.
Thanks again,