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Old October 22nd 09, 04:05 PM posted to rec.bicycles.tech
thirty-six
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Posts: 10,049
Default Spoke wrench size

On 22 Oct, 13:47, Qui si parla Campagnolo wrote:
On Oct 22, 12:57*am, thirty-six wrote:



On 22 Oct, 06:11, Gabriele R wrote:


Which spoke wrench for the std 12 mm brass nipples supplied together DT
Swiss Competition DB?
1)0.127 (3.22 mm)
2) 0.130 (3.3 mm)
3) 0.136 (3.42 mm)


Neither information from the DT Swiss website nor answer from them after
my e-mail. The italian DT Swiss service (!!!) office does not sound as
well informed (he thinks !!! 3.3 mm). Park Tool website says DT requires
3.22 mm.
Thanks.


In practice a 0.130" *three cornered nipple key works very well. *I
wont measure a nipple (I suspect they are smaller) because the
information you would gain would be from a 20 year old (possibly more)
supply. *If the nipple key fits tight, you may become frustrated at
the amount of time it takes to engage and disengage. *


Or you may not. For those of us that builds wheels all the time and
trues wheels all the time, the black wrench from Park or a DT one of a
Var one is the correct size.

You could get a

tighter 0.127" slotted key, smooth it off and round the engagement
edges. *I think this undersize (0.127) nipple flats is there to
promote speed with a standard 130 key.


Even for those of us that build many wheels during the year, speed is
not a consideration. Accuracy is and rounded nipples are no fun.


0.130" to 0.127" Less than a fag paper difference. This difference
in clearance does not damage nipples. If you're rounding nipples
you're either using junk (new DT nipples are not junk) and/or you are
overtensioning your spokes and not releiv=ng them as you adjust the
nipples. An accurate 0.130 key is the correct key for all European
nipples in regular bicycle gauges. I used the red Spokey to build
over a dozen wheels with DT nipples without any prblem bar that due to
the key having such a low mass which prevents self engagement. I used
it on who knows how many wheels on the road to prevent brake rub and a
few re-balncings following spoke breakage etc. I may even have a
black horseshoe key (0.127"), I dont use it because I won't search for
something that is no improvement over the correct green key (0.130").
I doubt I'll turn to any horseshoe key now that I have the metal three
cornered key. mmmm , but the horshoe key does hang on the aero brake
lever hood nice, and wheel QR levers. Sort of a good cue to remind
oneself which wheel needs checking.
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