Spokes and nipples question

jamesd256

Hi,

I am thinking of buying a SRAM automatix 2 speed back pedal hub for a Dahon Mu Uno.

The Uno has a 20" 28h WTB rear rim.

Is someone able to tell me either how to calculate the spoke length I need? Or maybe even direct me to where I can order some appropriate spokes/nipples.

Thanks!

J

ugo.santalucia

jamesd256 wrote:

Hi,

I am thinking of buying a SRAM automatix 2 speed back pedal hub for a Dahon Mu Uno.

The Uno has a 20" 28h WTB rear rim.

Is someone able to tell me either how to calculate the spoke length I need? Or maybe even direct me to where I can order some appropriate spokes/nipples.

Thanks!

J

You can use one of the many spoke calculators available online. You also need to read how to

1) Measure the ERD of a rim, which you need to plot in the calculator
2)measure the hole distance and the flange width of the hub

Finally, remember that in a 20 inch wheel you do not overlap the spokes when you lace the wheel, so you need them to be 1 mm shorter than the spoke calculator tell you for the given lacing pattern (which will probably be a 2 cross or even a 1 cross)