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5/8" nipples

Old 02-17-10, 10:31 AM
  #1  
chico1st
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5/8" nipples

if i am using 5/8" nipples for wheel building (4mm longer than normal 1/2") do i just subtract 4mm from the spoke length given by most spoke calculators?
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Old 02-17-10, 03:52 PM
  #2  
mrrabbit 
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Nowadays nipples are labelled as 10mm, 12mm, 14mm and 16mm and occasionally 20mm.

Sounds like you have the super duper el cheapo crappy 5/8 nipples (16mm) from Wheel Master of the kind typically found on steel wheels as opposed to alloy wheels. (If that's what they are - happy strippy hell!)

Easy way to check...grab a spoke with normal 10mm threads...not 12mm threads. See if you can thread the nipple on such that the spoke end still reaches the top of the nipple. If so...you got 'em the - el cheapo 16mm nipples.

In the above case...no adjustments in spoke length is necessary assuming you are aiming for the nipple flat in your rim's ERD.


Quality 16mm nipples would stop the spoke very close to the nipple flat. If that's the case it helps to have a little threading overhead you have two options:

1. Bring the spokes in to a shop with a Phil Wood spoke machine and roll for 2mm additional thread. (Which is what I do...)

2. Reduce your spoke length 1mm - no more than 1mm. (Not ideal...you are pushing the too short spoke issue...cutting it close.)


With #2 it really pays to check your ORIGINAL spoke measurements - especially with the rim ERD aiming at the nipple flat. Caculate and then reduce.


=8-)
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Old 02-17-10, 07:59 PM
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chico1st
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oh man... really there is a big difference in strippyness of spokes? I do strip spokes like crazy, this could explain how.
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Old 02-18-10, 09:14 AM
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helicomatic
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There is a difference. There's a reason good shops will only build wheels with DT, Sapim, or Wheelsmith stuff.
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