Need spoke lengths for ancient wheelset

[thefronny@gmail.com]

I'm re-juvenating my old bike from very long ago and I need spoke
lengths. The wheels are Campy Nuovo Record 6 speed low flange 36 hole
3x to Mavic GP4 tubies. Probably more important, can I use these
spokes with a pair of Nisi Campione del Mondos?

thx,

tf

[thefronny@gmail.com]

On May 18, 11:56 am, jobst.bra...@stanfordalumni.org wrote:
> someone wrote:
> > I'm re-juvenating my old bike from very long ago and I need spoke
> > lengths. The wheels are Campy Nuovo Record 6 speed low flange 36
> > hole 3x to Mavic GP4 tubies. Probably more important, can I use
> > these spokes with a pair of Nisi Campione del Mondos?
>
> Let's get down to basics. You didn't say what sort of spokes these
> are, type and diameter(s) and how many miles they have served. That
> would clarify whether to use them again or not.

DT 15-16-15 (I'm 148 lbs.).
Mileage unknown, but since I had long since stopped racing by the time
I laced the originals I bet it's pretty low for a DT spoke. Most of
their lives were spent hanging in the garage, but the sides of the
rims are scored enough that I don't trust them. If they fit with a
proper amount of thread contact I'm going to re-use them. DTs have
never failed me except for a couple years ago where one rear wheel
spoke broke about one third out from the hub flange on the drive side.
I just twisted the pieces around their siblings, opened the brake and
did thirty miles home. Of course, if they begin popping I'll replace
them.

>
> As for length, lay the new rim next to the old just for comparison and
> if they are close, the spoke length should work. Do not unspoke the
> wheels if you plan to reuse the spokes, but rather transfer them from
> the old rim to the new, one at a time, making sure to have a drop of
> oil on each spoke eyelet in the new rim.

I never unlace. I'm aware of seating.

Unlubricated spoke nipple
> seats is what ruined spoke wrenches because it was believed that
> torque arose from thread friction. This is untrue. Spoke nipples
> become rounded when the spoke nipple seizes in the rim.
>
> Aside from that, I suggest you get some new DT or Sapim 1.8-1.6mm
> thick spokes after measuring the OD of the rim to get its ERD
> (Effective Rim Diameter) then measuring from the OD of the rim down
> to an inserted spoke nipple. Use a spoke calculating program on the
> web to arrive at spoke length.
>
> http://www.sheldonbrown.com/rinard/spocalc.htm
>
> Jobst Brandt

Thanks for the write-back. As an aside, I also have a wheel that has
butted spokes that get smaller as you move from the hub to the rim in
two distinct (to my fingers) reductions. Perhaps 14-15-16? The head is
stamped with a 'P'. I've never seen this before.