Mavic 217 SUP Rims Help with Spoke length...Please Help!

[Big Bear Kona man]

Hi there,
Don't know if anyone can help me on this?, Ive just found my ultimate rims a set of 26" Mavic 217 SUP Sunset rims New Old Stock, and I need to purchase the correct length spokes for the hubs I'm planning on using.

Rear rim has 36 Holes and will use either a Shimano Deore XT 7 speed, Hub M730 or a Deore XTR M900
Front Rim has 32 Holes and will use either a Shimano Deore XT Hub M730 or a Deore XTR M900

was wondering if anyone can help me with what length spokes I would need?
Ive tried looking at the calculators, and the best one Ive seen hasn't got the details of the hubs I plan to use.

 

[Rank_21]

https://www.prowheelbuilder.com/spokelengthcalculator you need to manually put the dimensions in yourself I believe. This calculator seems to have Mavic 217 sizing already saved. The rest is for you to fill in. The better way selon Roger Musson if I recall

 

[rmwesley]

I think you've posted this thread in different sub-forums so will paste this from the other thread... hope it helps.

You physically need the rims and hubs in your possession to calculate spoke length unfortunately. You need the following measurements:

1) effective rim diameter (ERD)
2) hub pitch circle diameter - left and right (PCD)
3) hub flange distance - left and right
4) hub spoke hole diameter

I would never trust the manufacturer's quoted ERD since it is actually dependent on where the wheel builder likes to leave the end of the spoke in relation to the nipple. For example, I'm building some H Plus Son SL42 rims at the moment and my calculated ERD was 4mm different to the spec quoted by H Plus Son.

I wouldn't normally trust the hub manufacturer's dimensions for 2) and 3) either since they are easy to determine yourself.

For 1) you need two spokes of equal known length, two nipples you wish to use in the wheel build, and a ruler (with 0.5mm markings).

For 2) and 3) you need a height gauge and a flat surface.

For 4) you can trust the hub manufacturer's dimensions since in reality it makes so little difference on the calculated spoke length.

So if you have two spokes, two nipples, a ruler and a height gauge let me know and I'll happily do another post on how to calculate the dimensions. If you haven't got them, I'd just ask the wheel builder to calculate it for you.

 

[trailstar82]

Did you check out https://sheldonbrown.com/rinard/spocalc.htm

This also has the rims, I added my own hub into the calculator when working out spoke lengths.

 

[Tootyred]

Try this....but check your measurements match mine.....it was a long time ago in a galaxy far away.

Rear hub was respaced to 135, from 130, but tbh, it has limited effect. You can put it onto a spoke calculator and check but my guess would be max 0.5mm extra on the non drive length.

So say 259 drive and 260 ( still) non drive.

But as i always say....NEVER belive anything, take your own measurements...but hey!