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Spoke length question for wheel building. Please help.(10 posts)

Spoke length question for wheel building. Please help.Ken of Fresno
Aug 30, 2002 10:57 AM
Wheel builders,

I'm building a set of wheels and have two specific questions.

1. The spoke length calculations seem to be within 1 or 2 mms difference between the front and back wheel (F=294.6 Rnondrive=293.2 Rdrive=291.6). Can I just buy 1 box of 72 spokes all the same size (294mm) to do the job? It's much cheaper that way, as I can get a good deal on the box.

2. Can I use standard alloy nipples (not the extra long ones) with my rims?

Here's what I'm using:
Rim: Mavic CPX33
Hubs: Shimano Ultegra 9spd
Spokes: DT Competition 14/15
Lacing Pattern: Cross 3

If anyone has built wheels with these same components I'd love to hear what you did (spoke lenghts f/r, standart/extralong nips, etc.)

Thanks!!!
Ken
both are 32 spoke. nmKen of Fresno
Aug 30, 2002 11:03 AM
Nope.Gregory Taylor
Aug 30, 2002 11:07 AM
Based on your numbers, the 294's would be way too long on the rear drive side. Put it this way, I wouldn't do it.
look at performancebikes, they sell those spokes...PeterRider
Aug 30, 2002 11:35 AM
... packaged in smaller quantities, for what seems to be a good price. Plus there are 20% coupons valid until tomorrow, in the outside buyer magazine's guide (I posted 2 of those coupons yesterday in the hot deals forum).

I don't know how is the customer service for spokes, if they mess orders or not... but I ordered some yesterday (for lacing CXP33 to chorus front/dura-ace rear). We'll see.

Pierre
re: Spoke length question for wheel building. Please help.Jekyll
Aug 30, 2002 12:38 PM
Usually within a millimeter or two is OK but to save $3-5 on the spokes and then possibly have building problems and always wonder if a spoke is too short, etc while riding - I don't think its worth it.
CXP33 take regular nipples (I just build up 2 sets of wheels with them in the last month of so - both 28 hole on DA - 1 all 3X DT 14/15/14 (for a friend) and one for myself radial front DR Revolutions & 3X drive 14/15/14 DT - radial non-drive Revolutions).
Good luck!
What spoke lengths did you use on the 3x DA wheel?Ken of Fresno
Aug 30, 2002 12:52 PM
I don't think there would be any difference for Ultegra.

Thanks,
Ken
What spoke lengths did you use on the 3x DA wheel?Jekyll
Aug 30, 2002 1:00 PM
Indeed, there would not be any difference between 105/ultegra/da hubs - flange size and offset is the same.
I would give you the spoke sizes I used for both build ups but as the wheels I've recently built with CXP33's were 28 hole, thus the spoke lengths would not be applicable to your scenario. A quick look shows that you should need 294 front, 292 left rear and 290 drive for a 3X 32 hole set up. Just get the correct lengths and sleep better.
Thanks! nmKen of Fresno
Aug 30, 2002 1:09 PM
re:Too long ain't much better.dzrider
Aug 30, 2002 1:11 PM
Waiting for the end of a spoke that sticks out the back of the nipple to work its way through the rim strip and blow the tire.
re: Spoke length question for wheel building. Please help.gtx
Aug 31, 2002 9:39 AM
There is a bit more room for error with Wheelsmith spokes than with DT spokes--Wheelsmith spokes have slightly longer nipples. I'd just buy the right size, though... (and I prefer brass nips, especially on the rear drive side)