Samd wrote:Vito, for the 3kw motor - possible to make it a lower kV? By about 30 percent?
The wheel will be 80cm diameter. At 1000 rpm the motorbike will want to go too fast - 158kph!
I fear that acceleration would be poor with the standard winding...
Hello Samd, sorry for my late reply.
For if it's 80cm diameter, the perimeter is 2.51m.
Considering windage, the peak speed is about 128KPH.
Rough calcuation formula of high speed (more than 100KPH):
V=0.85*RPM*2πr*60/1000 V (KPH), RPM=un-load RPM, r=radius of tire
Rough calcuation formula of high speed (less than 100KPH):
V=0.9*RPM*2πr*60/1000 V (KPH), RPM=un-load RPM, r=radius of tire
Here is different kV for reference, please advise which one do you prefer?
Btw., When placing order, pls. advise below points:
1. E-bike, tire model (80cm diamter)?
2. Volt and wattage of motor (3000W), Speed, and torque/climb angle ?
3. Your vehicle weight and loading weight?
4. Lithium or lead-acid Battery?
Thank you for your cooperation.
Awaiting for your comment, thank you!