Felgen und Speichen

[trietjebietje]

Hello,

I have bought a 180W 24V front wheel Tongxin motor and also a 36V 205W front motor Bafang motor.
Now i am looking for the right Felge und Speichen for these.

I drive two 20'' wheels (ERTRO 40-406 = 20'' x 1,50 to 50-406 = 20'' x 2,00)

I mailed Udo Kudelka from Laufrad Tuning. He has a Rigida X-Plorer rim
of 368 mm for the motors.
Now i got a program (*.ods extenson) to measure the Speichenlenght.

On this page http://www.das-elektrorad.de/technik.htm i can find the Speichenlenght for a 20'' Bafang engine SWXK, but nog for a 20'' Tongxin motor. It is not in the list.

Any person knows what Felge and Speichenlenght fits certainly?

When the motors arrive i can calculate the Speichenlenght with this program.

Thanks in advance,

Trietjebietje

[trietjebietje]

I have a program to calculate the spoke lenght.
Therfore i need some info about measurements on the 2 motors. Does anyone has these data?

180W 24V front wheel Tongxin motor and also a 36V 205W front motor Bafang motor


http://www.pedelecforum.de/forum/imgcache/1620.png (http://img16.imageshack.us/i/speichenberechnung00002.jpg/)

http://www.pedelecforum.de/forum/imgcache/1623.png (http://img27.imageshack.us/i/speichenberechnung00001.jpg/)

[trietjebietje]

My engines will only arrive next week.

If i know the distanz der Nabenflansche (b) and the Lochkreisdurchmeser der Nabe (d) for the 2 motors i can order my Speichen und Felge.

Anyone who has these data for the Tongxin 180W 24V frontmotor and the Bafang 36V 250W frontmotor?