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- Thread starter Paul E.
- Start date

I believe the E3 Dash provides 40 Newton Meters of force but I'm not sure how many amps it draws. The capacity of the battery is 418 watts (48*8.7) so maybe we can use these stats to transform the energy potential into an estimated output?

A basic estimate would be to divide the watt hours by 20 (a rough estimate for what's required to go one mile according to electricbike.com and supported by this post using real data from a rider on the forums here). So 418 Wh / 20 (Watts estimated to go 1 mile) = 20.9 (miles) given a top speed of 20mph that means you could ride for >= 1 hour. Unfortunately, this equation doesn't take rider weight, motor size or amps drawn into consideration. I was trying to use this tool to convert watts to Newton meters but was unable to build an equation that made sense.

- Region
- Canada

- City
- Halifax

I believe the E3 Dash provides 40 Newton Meters of force but I'm not sure how many amps it draws. The capacity of the battery is 418 watts (48*8.7) so maybe we can use these stats to transform the energy potential into an estimated output?

A basic estimate would be to divide the watt hours by 20 (a rough estimate for what's required to go one mile according to electricbike.com and supported by this post using real data from a rider on the forums here). So 418 Wh / 20 (Watts estimated to go 1 mile) = 20.9 (miles) given a top speed of 20mph that means you could ride for >= 1 hour. Unfortunately, this equation doesn't take rider weight, motor size or amps drawn into consideration. I was trying to use this tool to convert watts to Newton meters but was unable to build an equation that made sense.

Although instant torque and peak torque values are often different, 40Nm value seems within the range of torque offered by electric drives. I have seen Currie claiming that their E3 peak/ JD tranzx drive train offers 70Nm of torque (peak torque)!! Bosch performance line offers 60Nm.

The simplified version of Wh to distance equation gives a fair estimate. I have seen number of posts on Endless Sphere about this and people who pedal hard use 13 Wh instead of 20Wh. 10 miles should be easily doable on the 417 Wh Dash battery. With a little bit of coasting, 10 miles + return trip/pedaling should be alright.

On my bike, with 70% Eco + 30% Standard assist, I get 50 miles and I pedal 100% of the time.

Nice

Awesome! Thanks for the real world feedback Kyle. I keep hearing that acceleration is where most of the energy is spent with ebikes and probably electric cars (if you start hard and fast). Two bars of energy for 19 miles is fantastic...

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