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Wheel wieghts?(10 posts)

Wheel wieghts?scottfromcali
Jan 30, 2003 11:40 PM
Would anyone care to make a guess at my current wheel wieght of CXP21's? Im just trying to see how much wieght I will save going to a AM 1448g wheelset.
Forgot to mention that is with 105 hubs and 32 spoke frt/rearscottfromcali
Jan 30, 2003 11:46 PM
Forgot to mention that is with 105 hubs and 32 spoke frt/rearSpoiler
Jan 31, 2003 9:13 AM
Performance lists 105 hubsets as 618g.

64 spokes could range from a total of 448g with 14 gauge, 384g for 15 gauge, or 300g with DT Revolutions spokes

I couldn't find the weight of CPX-21 rims.
lotscollinsc
Jan 31, 2003 12:36 AM
I have a pair of CXP21s with 105 hubs.

They are heavy as hell. Indestructable sure, but boat anchors. near on 1900g
Yikesscottfromcali
Jan 31, 2003 8:24 AM
that would shave an entire pound off of my bike, all of which is rotational mass.
you'll definitely feel it nmDougSloan
Jan 31, 2003 8:56 AM
yeahcollinsc
Jan 31, 2003 10:14 AM
I got a pair of much nicer wheels and the difference is huge.

my cxp21s were 32 spoke, 3x with 14/15 DB and i dont remember but probably brass nipples.

Its not really all rotational though. I believe the CXP21 is about 480g. I currently have a pair of Velocity Aeroheads 24/28 on a Sun front hub and way light Tune rear. Same 14/15 wheelsmith spokes. The Aeroheads are supposed to be ~405g or so, and Id guess that the spoke difference is something like 12*5g=60g.
So real rotational savings are ~220g, the savings that youll feel anyway. Still huge differences.
That said, I wouldnt give up my Tune hub for anything.
collinscottfromcali
Jan 31, 2003 3:15 PM
The Aeroheads are what I was thinking about buying, can you give me pros and cons of the wheels? what do you think of them so far? Do you have the deep rim? what spoke count? and where did you buy them? Thanks
BullshitPeterRider
Jan 31, 2003 5:28 PM
Maybe I am completely stupid, but I think half of this wheel weight debate is bullshit. When you say "rotational mass", what matters is the mass that is far away from the axle, ie the rim. So when you switch from CXP21 to aeroheads, you save about 100-120g in weight for the rims. The hubs mass matters much less, what matters here is the quality of the hub.

I switched from Ultegra/open pros to dura ace/cxp33 (cxp33 are heavier), then to dura ace/aerohead. I think the nicest of the 3 are dura ace/cxp33. And I do almost only climbing.

Pierre
Wheel wieght websites worth bookmarkingTig
Jan 31, 2003 3:41 PM
A listing of over 90 wheelset weights:
http://www.tc-homes.com/bike/features/wheels/cover.htm

CompetitiveCyclist custom wheelset calculator:
http://www.competitivecyclist.com/cgi-local/cycle.py?page=wheel