Terry Morse said:Quoted message said:Just the same, oiling the threads before building is useful in two
ways. It assists in tensioning for minimal spoke twist and it
prevents fine grit from washing into the interface on wet roads.
Quoted message said:Speaking of spoke windup, have you seen or used the Twist Resist
tool? It's mentioned on the American Classic website:
Quoted message said:http://www.amclassic.com/Tech_Truing.html
Quoted message said:It's a gripper tool that holds the spoke while the nipple is being
tightened. Seems it would be useful when building with very thin
spokes. Conceptually, it should eliminate the need to back-twist
the nipple to take out the spoke windup.
Just looking at the picture makes me cringe. Beside the cost, this
turns a one-handed job into a two-handed one, and doesn't even
guarantee no twist depending on how tight the gripper is applied.
Long ago, when building 24-spoke track wheels with 1.5-1.8mm spokes
(essentially Revolution), I tried holding spokes with pliers with
serrated jaws and discovered how hard it is to prevent twist. Even
smooth tipped ViseGrip pliers didn't do the trick.
I found that unloading the spoke to be adjusted a better method, and
with a rigid truing stand this is easily done. Since one usually
holds the wheel in position with the other hand, that hand can be used
to displace the rim toward the side from which the spoke approaches.
This is easily done without any any special maneuvers. In contrast,
imagine how hard it would be to grip the spoke near the nipple with
Twist-resist and turn the nipple with a spoke wrench.
As I mentioned, this year at InterBike, an engineer from Holland
Mechanics wheel building machines called me over and asked me to tell
him once more about making machine built wheels as good as hand built
ones. He wrote it down and said that this time they were going to do
something about it. My suggestion was to include a pneumatic piston
that radially presses against the rim at the spoke being adjusted so
that its nipple can be turned freely regardless of tension.
Along with this, they must also devise a tensiometer that can tell
when the wheel is tight enough. Spoke nipple torque is not a good
measure of tension. That problem is of course as important as the
first. This shows that after my yearly harangues about this, they
noticed they had a problem that customers knew about all along, that
their machine built wheels needed SpokePrep so to speak.
http://www.hollandmechanics.com/
High tension is where it's at!
Jobst Brandt
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