Hello everyone,
as we are in need of a cargo bike at the moment, but because I find the current prices for those a bit steep, I have bought a rather interesting frame set.
It is a fatbike cargo bike with stub axle steering (is that the correct word?), see pictures. Originally built so that a 26" fatbike wheel should be fitted in the back.
Since the bike will mostly be ridden on asphalt or gravel roads, I will probably build a 29er wheel, which should have a similar circumference.
Requirements:
The frame weighs just under 20kg as it is now, plus the various parts and motor, battery, controller etc.
Rider weight not more than 80kg.
The load would be a 40kg dog most of the time.
So, roughly speaking, one would have to move a total weight of 160kg with the bike.
Mainly in the city, to work and back every day, with some gradients because two overpasses have to be crossed.
Originally, a Bafang BBSHD was planned as the motor, but unfortunately it doesn't fit under the bottom bracket.
A front wheel motor is not possible because of the design, so imho the only option is a hub motor on the rear wheel. The dropouts have an inner width of 175mm.
Originally I was thinking of a direct drive motor, but now I am not averse to a geared motor.
Continuous power should be at least 500w, not to use it all the time, but to have adequate power and thermal reserves.
VMax certainly not higher than 25 km/h with such a vehicle.
Basic knowledge of electronics and electrics as well as a fully equipped workshop available, time currently rather sparse, but I'm not in a hurry.
Which hub motor would be suitable for such a bike?
(Please excuse my english)
Best regards
Gregor
as we are in need of a cargo bike at the moment, but because I find the current prices for those a bit steep, I have bought a rather interesting frame set.
It is a fatbike cargo bike with stub axle steering (is that the correct word?), see pictures. Originally built so that a 26" fatbike wheel should be fitted in the back.
Since the bike will mostly be ridden on asphalt or gravel roads, I will probably build a 29er wheel, which should have a similar circumference.
Requirements:
The frame weighs just under 20kg as it is now, plus the various parts and motor, battery, controller etc.
Rider weight not more than 80kg.
The load would be a 40kg dog most of the time.
So, roughly speaking, one would have to move a total weight of 160kg with the bike.
Mainly in the city, to work and back every day, with some gradients because two overpasses have to be crossed.
Originally, a Bafang BBSHD was planned as the motor, but unfortunately it doesn't fit under the bottom bracket.
A front wheel motor is not possible because of the design, so imho the only option is a hub motor on the rear wheel. The dropouts have an inner width of 175mm.
Originally I was thinking of a direct drive motor, but now I am not averse to a geared motor.
Continuous power should be at least 500w, not to use it all the time, but to have adequate power and thermal reserves.
VMax certainly not higher than 25 km/h with such a vehicle.
Basic knowledge of electronics and electrics as well as a fully equipped workshop available, time currently rather sparse, but I'm not in a hurry.
Which hub motor would be suitable for such a bike?
(Please excuse my english)
Best regards
Gregor