Wheel building with a dynohub

[MarkN5075]

Hello All, Im currently attempting my first wheel build. However, after removing the old spokes from the wheel i noticed they were 2 different lengths. I dont recall if the shorter spokes came from the large flange side or the smaller side. Can someone point me in the right direction. Many thanks 😊

 

[si_c]

Shorter spokes from the larger flange side. Do you remember the original lacing pattern?

Good luck

 

[Ming the Merciless]

As above you’ll need to know the lacing pattern so the new spokes fit. Otherwise you may have to try common lacing patterns till one works.

Rule of doing things for first time. Take photos as you go.

 

[Ian H]

Here's a good spoke-length calculator. using this you can put in all the measurements and experiment with different crossings until you find the same length as the old spokes. It'll almost certainly be either 2 or 3 cross (possibly 2x on the large flange, 3x on the other).

 

[Gunk]

I’ve stripped and rebuilt quite a few wheels, golden rule is always to take plenty of photos before stripping the wheel.

 

[Ajax Bay]

the shorter spokes came from the large flange side

This ^^ (lovely shiny!)

 

[rogerzilla]

I have a non-shiny one in the shed. If you ignore the prodigious weight, their 1.8W will drive most modern LEDs easily.

 

[confusedcyclist]

I'm a little out of practice, it's been some years since I last built a wheel, but I'm surprised that no one has mentioned this already... Unless the new hub happens by chance to have identical measurements to your old hub, you might need new spokes anyway? Or is the the original hub? If so, it's in remarkable condition! Which then begs the question, why the rebuild? Good luck and have fun!