What's your top speed? The spec sheet you got states noload RPM at 3800 but their test is over 5000! Makes me doubt the kV calculation i did.
Do you know the kV for your motor?
I won't be buying Monstarrs motor, it's free for anyone that's interested!
You best email to qs they make the axle like you want for me they make it work for 420 sprockets.
If you do a conversion of the axle, please share some picseee291 wrote: ↑Jul 30, 2018 7:39 am
I got a Machinist who could make it fit a 12T sprocket for my Derbi Senda. But I'm wondering If I can't get the Rear belt pulley like larsb, and use that on my Derbi.
I wonder if a 1:4.77 reduction isn't too fast for a 17'' Wheel though. I initially wanted to do a 1:6 gear reduction..
Thats another good example that Watt numbers say nothing about the size. See it more like a series number or just a product nameQS 3000 vs D 3000 lol
Thats true, i am shore if i raise voltage from 58 to 84 volt it will do easy 17kw, for me now 11,5 kw is enough.madin88 wrote: ↑Jul 30, 2018 8:36 amThats another good example that Watt numbers say nothing about the size. See it more like a series number or just a product nameQS 3000 vs D 3000 lol
This motor likely can do 3 to 4 times the power it was rated for, maybe even real continuous with good cooling.
Regarding the belt drive i also think that a reduction of 4,77 will be to weak in therms of torque for your application. It was designed for small scooter wheels.
But belt drives ROCK because they are very silent, and regen works excellent (similar to a hub drive)! IT would be the best choice at least if you don't ride to much offroad or in the mud (belts don't like sand and mud).
Maybe you can find a larger pelt pulley from another supplier?
Looks good and functional! Did you turn down the pulley to only keep the axle and key interfaces?eee291 wrote: ↑Aug 12, 2018 4:46 amHi guys it's been a slow month
But I finally finished it. Not quite how I wanted it but the sprockets had 4 M6 holes, so I got went the larsb way
I may purchase another front belt pulley from QS and try again. Since I don't have any machine shop near me that can work on the Axle.
Some pics: https://imgur.com/a/8X5Fq8R