On Feb 23, 8:30 pm, Robert Perkins <
[email protected]> wrote:
> datakoll wrote:
> > try quadrant tightening. 2 Q's "out " first seated+ then, 2 Q's "not
> > out" seated only then back to two Q's out for first torque and first
> > correction torque.
> > tighten quadrents from middle quad out both sides alternately. use
> > tape.
>
> Ok, I give. Quadrant I understand. Given a 32-spoke wheel, what would
> that mean in terms of spoke numbers and tightening sequence?
>
> Rob "just tighten each spoke a little bit at a time" Perkins
son after beginning the continuous experinece of straightneing
continuously bent rims, the thought sprung up that written direction
omitted a critical experiential fact: sheet metal isnot unbent from
right to,left or top to bottom or conversely. Sheet metal isbent from
middle outwards sequenchally and with feeling.
The rim, the bridge arch rebent from middle ourward supports itself.
Traveling along the rim from left to right weakens it. At best and
worst, turning one more 1/4 turn on a trued rim, is takening a chance
at Brandt's sine wave torque limit.
32/4=8 at 11:18 EST at Cape Canaveral 2/23/08. 3+3=6 so there's 2
spokes in the middle of each quad.
URINE LUCK you immediately achieved balance.
off course, yawl may find the lateral problems braced with a radial
problem giving the dreaded egg shaped rim. You know sublimely
tightening one Q side and not so much the other Q side during iintial
torque following nipple seating moves the hub toward the not so much
side.
actual objective visual examination is very difficult: the rim present
itself as an optical illusion so tricky not many realize what the rim
is doing to the builder's synapses.
try examining the rim adjacent a flat surface. You may see that what
you thought you were doing does not jibe with an approach to objective
physical reality.
then draw the plan, and with the drawing, schedule your moves as first
torque setups past nipple seating. EG, this Q is 2 mid nips 1/4+ turn,
next 3 each side seated, next 4 -1/8 turn
and so on.
I haven't used a tensionometer yet. Which is to say I don't know and
my spokes are too loose. Brandt would vomit. But I'm happy time/
results, the tires run good long mileages.