It may not be geared right for hill climbing with cargo on our steep hills. But when you consider that brushless motors are able to produce much more power than is posted on the label, you can see why this e-bike has so much potential. This is the way the Elf car can climb steep hills with only a 750 watt motor.
|I don't think they want people to see how small their motor is.|
Another good argument for custom made e-Bikes.
To keep the battery size small, the eVox cruises at about 500 watts, up to 20mph on flat land (more if you pedal). But when you need more power, you can climb steeper hills with as much as 750 watts for up to five minutes without frying the motor and controller; longer than most e-bikes simply because they use a high voltage motor.
The majority of the heat that can damage the motor and controller comes from the amps of current. By choosing a system that has higher volts, you can achieve the same amount of power with fewer amps.
The display panel will actually show you real-time wattage draw from the battery; this is not available on all e-bikes.
This e-bike could use a lower gear to move 400lbs up an 8% grade. With 750 watts a 12mph gear is needed; if lower gears are available they do not want to tell me exactly how much lower; after all that would require calculations.
If you have strong enough legs you could add 250w for a 1000w hill climb. That is enough power to climb a 6% grade with 400lbs at close to 17mph, or a 5% grade at just under 20mph. Or 350 lbs up a 6% grade at about 18-19mph assuming the powered side is in the right gear. But Remember I am talking about total combined weight.
If you have an 8% grade your going to slow down to about 10mph or less with the gear set as high as it comes from the factory (I do not know exactly what the power drop is when the gear is not set right). Too bad they don’t just do a graph of what it can actually do with at least 350lbs.
Unfortunately this does not use a disc brake. It is very difficult to fit a disc brake with a belt drive.
Mass produced electric cycles are made for generic flat terrain. But this is good for people that know what it takes to climb hills with cargo. There needs to be at least one person in every town with steep hills, turning people’s cycle trucks into powerful hill climbers.
Don’t be suckered into buying a big over powered mid drive, you don’t need it. Read more about why this kind of gearing is so good:
Ask them what amps the controller is set for:
The only thing that e-Velo has going for it, other than disc brakes, suspension and lower price, is the worm gear that allows for a larger motor 600 watts. (their 500watt motor actually draws 720 watts maximum, But what is the actual output at the drive wheel?).
All the power goes through the bicycle drive chain. It will wear out faster and there is the possibility of it snapping. Bicycle drive chains were made for human power, less than one-third HP!
This bicycle would be much better if it had a belt drive on the left side.
|smaller than I expected|
/ how to motorize a big vehicle/ Hub Motors / How much power do you really need?