boyntonstu
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- Joined
- May 1, 2008
- Messages
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Power Required For Various Speeds
A differing summation of watts required for a mountain bike to maintain various speeds.
*5mph = 22w
10mph = 68w
15mph = 163w
20mph = 333w
25mph = 601w
30mph = 993w
35mph = 1532w
40mph = 2247w
45mph = 3147w
50mph = 4280w
* from ebike.ca simulator
30mph requires almost precisely 300% the energy as 20mph.
Of course, it does not require 3x the energy per mile.
163w/15mph = 10.86wh/mile
333w/20mph = 16.66wh/mile
993w/30mph = 33.1wh/mile
Still 30mph require 2x the energy per mile, or ...
Same ~36V 10Ah battery ...
15mph = 30+ mile range or - 92.08 miles per kWh = 6 hour cruise time
20mph = 20 mile range or - 60.02 miles per kWh = 3 hour cruise time
30mph = 10 mile range or - 30.21 miles per kWh = 1 hour cruise time
A differing summation of watts required for a mountain bike to maintain various speeds.
*5mph = 22w
10mph = 68w
15mph = 163w
20mph = 333w
25mph = 601w
30mph = 993w
35mph = 1532w
40mph = 2247w
45mph = 3147w
50mph = 4280w
* from ebike.ca simulator
30mph requires almost precisely 300% the energy as 20mph.
Of course, it does not require 3x the energy per mile.
163w/15mph = 10.86wh/mile
333w/20mph = 16.66wh/mile
993w/30mph = 33.1wh/mile
Still 30mph require 2x the energy per mile, or ...
Same ~36V 10Ah battery ...
15mph = 30+ mile range or - 92.08 miles per kWh = 6 hour cruise time
20mph = 20 mile range or - 60.02 miles per kWh = 3 hour cruise time
30mph = 10 mile range or - 30.21 miles per kWh = 1 hour cruise time
