Hi guys
This is my first post on endless sphere. For a while I have been planning an electric motorcycle build, inspired by the 11kw Zero motorcycle model. Now while I love the tech of zero motorcycles, I am not a fan of Zero's aesthetics or price. The motorcycle I plan to build intends to be lighter, while not as powerful as the Zero 11kw. I am still new to electrical engineering and would appreciate any help!
The motor I have selected is the Revolt RV-160Es http://www.revolt.org.il/rv-160-model/rv-160es/
I am planning to use the 70kv version running it at 84V, to achieve a top speed of 140km/h or 87mph.
The calculation for this is shown below, would appreciate anyone's input on this.
The motorcycle rear wheel rim is 17inches. Using an online wheel rpm calculator, the tyre rpm = 1392.56 rpm.
The motor rpm = tyre rpm x gear ratio
The gear ratio I want to use 4:1
Motor rpm = 1392.56(4) = 5570.24 rpm
That would be the motor rpm under load. Therefore for the motor rpm with no load = 5570.24/0.9 = 6189.18 rpm @ no load
Using this I can calculate the motor kv = no load rpm/volts
6189.18/84 = 73.68 kv
Now here is I am really stuck, the batteries and the ESC!!!
According to the Revolt website
With this being said I found a 12v30Ah pack https://www.globalsources.com/gsol/I/Lithium-ion-battery/p/sm/1170409262.htm#1170409262
Using 28 of these 12V30Ah packs, I plan to use a 7S2P layout to get 84V with 60Ah. According to my basic understanding the battery should produce a continuous current of 60 amps for 1 hour before being drained completely. I only plan to use the vehicle for no more than 45 minutes a day. Will 60 amps be enough or should I go for 90 amps? Bearing in mind weight is critcial!
Have I got this correct? Any improvements or recommended 12V battery packs would be greatly appreciated
Also Revolt mentions that there motors will work Sevcon and Kelly controllers that accept 120 degree hall sensor angle, do you guys recommend any controllers?
Looking forward to all your opinons, thoughts and advice!
Best
Khazimodo
This is my first post on endless sphere. For a while I have been planning an electric motorcycle build, inspired by the 11kw Zero motorcycle model. Now while I love the tech of zero motorcycles, I am not a fan of Zero's aesthetics or price. The motorcycle I plan to build intends to be lighter, while not as powerful as the Zero 11kw. I am still new to electrical engineering and would appreciate any help!
The motor I have selected is the Revolt RV-160Es http://www.revolt.org.il/rv-160-model/rv-160es/
I am planning to use the 70kv version running it at 84V, to achieve a top speed of 140km/h or 87mph.
The calculation for this is shown below, would appreciate anyone's input on this.
The motorcycle rear wheel rim is 17inches. Using an online wheel rpm calculator, the tyre rpm = 1392.56 rpm.
The motor rpm = tyre rpm x gear ratio
The gear ratio I want to use 4:1
Motor rpm = 1392.56(4) = 5570.24 rpm
That would be the motor rpm under load. Therefore for the motor rpm with no load = 5570.24/0.9 = 6189.18 rpm @ no load
Using this I can calculate the motor kv = no load rpm/volts
6189.18/84 = 73.68 kv
Now here is I am really stuck, the batteries and the ESC!!!
According to the Revolt website
The total weight of my motorcycle aims to be 90-100kg excluding rider.100-150Kg total weight (vehicle+ driver) a 45- 60A cont. current (battery amps) controller should be enough
With this being said I found a 12v30Ah pack https://www.globalsources.com/gsol/I/Lithium-ion-battery/p/sm/1170409262.htm#1170409262
Using 28 of these 12V30Ah packs, I plan to use a 7S2P layout to get 84V with 60Ah. According to my basic understanding the battery should produce a continuous current of 60 amps for 1 hour before being drained completely. I only plan to use the vehicle for no more than 45 minutes a day. Will 60 amps be enough or should I go for 90 amps? Bearing in mind weight is critcial!
Have I got this correct? Any improvements or recommended 12V battery packs would be greatly appreciated
Also Revolt mentions that there motors will work Sevcon and Kelly controllers that accept 120 degree hall sensor angle, do you guys recommend any controllers?
Looking forward to all your opinons, thoughts and advice!
Best
Khazimodo