Hello,
Optional intro
I'm building an electric kick bike (have build three ebikes before). The controller I want to use (and already have) is limited to 48V and 40A. For motor I'm thinking a DD hub motor in a 20" rear wheel. To be road legal I'm limited to a top speed of just 17-18MPH. To make it fun I would like it to accelerate quickly up to the allowed max speed and also reach top speed uphill. The motor should not overheat even when accelerating and riding at top speed for longer times.
I have used this controller before with a Crystalyte H 4065 motor in a 28" wheel with a 36V battery and it had a top speed of around 20MPH and acceleration was 'OK'. Since I will use a 48V battery, a much smaller 20" wheel and a lower top speed, I expect a decent increase in acceleration.
Question
Which DD Hub motor in a 20" wheel, running on 48V, with a requested top speed of 17MPH/27KMPH will give me the best, reliable, acceleration and torque?
Options
- Crystalyte HT 3525 Rear motor
http://shop.crystalyte-europe.com/product.php?productid=16445&mode=download&file_id=66
-- 250 - 2000 Watt, 24 - 72 Volt; 40 - 90 Nm Torque; 45 Amp Max; 6,5 RPM/V; 6,5 Kg weight
-- 20" Wheel @ 48V = Top speed exactly 17MPH/27KMPH
- Crystalyte H 4065 Rear motor
http://shop.crystalyte-europe.com/product.php?productid=16566&mode=download&file_id=113
-- 250 - 3000 Watt, 24 - 72 Volt; 55 - 120 Nm Torque; 50 Amp Max; 8 RPM/V; 7,5 KG weight
-- 20" Wheel @ 48V = 21MPH/34KMPH
Since the lighter, cheaper, HT 3525 has the exact top speed I require, I would assume it will use the applied power more efficiently in the speed-range I require and so it should accelerate quicker?
Thanks
Optional intro
I'm building an electric kick bike (have build three ebikes before). The controller I want to use (and already have) is limited to 48V and 40A. For motor I'm thinking a DD hub motor in a 20" rear wheel. To be road legal I'm limited to a top speed of just 17-18MPH. To make it fun I would like it to accelerate quickly up to the allowed max speed and also reach top speed uphill. The motor should not overheat even when accelerating and riding at top speed for longer times.
I have used this controller before with a Crystalyte H 4065 motor in a 28" wheel with a 36V battery and it had a top speed of around 20MPH and acceleration was 'OK'. Since I will use a 48V battery, a much smaller 20" wheel and a lower top speed, I expect a decent increase in acceleration.
Question
Which DD Hub motor in a 20" wheel, running on 48V, with a requested top speed of 17MPH/27KMPH will give me the best, reliable, acceleration and torque?
Options
- Crystalyte HT 3525 Rear motor
http://shop.crystalyte-europe.com/product.php?productid=16445&mode=download&file_id=66
-- 250 - 2000 Watt, 24 - 72 Volt; 40 - 90 Nm Torque; 45 Amp Max; 6,5 RPM/V; 6,5 Kg weight
-- 20" Wheel @ 48V = Top speed exactly 17MPH/27KMPH
- Crystalyte H 4065 Rear motor
http://shop.crystalyte-europe.com/product.php?productid=16566&mode=download&file_id=113
-- 250 - 3000 Watt, 24 - 72 Volt; 55 - 120 Nm Torque; 50 Amp Max; 8 RPM/V; 7,5 KG weight
-- 20" Wheel @ 48V = 21MPH/34KMPH
Since the lighter, cheaper, HT 3525 has the exact top speed I require, I would assume it will use the applied power more efficiently in the speed-range I require and so it should accelerate quicker?
Thanks