27.8 kph or 17.27 mph on 20" at 36v
Battery:
Voltage:
36 v
Presume Nominal
Capacity:
10 ah
Maximum - sounds like 2C LiFePo4 or LiPo eBike Style
Maximum Continuous Discharge:
20 A
Is this Maximum or Continuous Discharge, do you have a pulse rating?
1.) What battery Chemistry?
2.) 2C Discharge Constant or Burst? If Burst Time Constant if Nominal or Constant - maximum burst, 2.5C?
3.)
Stock Controller:
Voltage:
36v
Maximum Current:
14A Peak
Nominal Current:
7A Constant
Is this measured or is this advertised specs on the controller?
At 17.27 mph (27.8 kph) on a 20" your 20" wheel is spinning at:
17.27 * 336 = 5,802.72 / 20 = 290.136 RPM
To achieve your requested speeds you need more than just current, upping the current may bump you 3-4 kph but no more and past a very SMALL point you will being to over saturate that 250w.
The RPM you want to achieve while riding is:
35 kph or 22 mph
22 * 336 = 7,392 / 20 = 369.6 RPM required at rear wheel
Current nominal voltage (presuming LiFePo4 or eBike Lipo 10AH since it seems 2C discharge) 36v and loaded speed achieved 17.27 mph so reverse calculate the loaded kV:
290.136 / 36 = 8.0593 kV
369.6 / 8.0593 = 45.8601 v nominal so 44.4 would do the trick or even a booster pack in series of 10AH (2P 5AH each) 2S packs 20C would do the trick depending on the pack chemistry you have now.
Hope this helps!
PS: I would push the current no more than perhaps 20A Primary and 25/30A phase current on that motor and check the temp… the volt up should help a lot..
-Mike
PPS: I deal almost exclusively in 20" folding bikes here, on the train - no what you mean !
