E drivetrain with general parts you can buy website

[hodala]

I'd ridden some hub motor driven e bike, not durable at all, so I decide to build an e bike with general parts drivetrain, the parts one can buy on website easily

48V 400w 997 motor, grinder gearbox, sprockets and chains

Had built 1st stage & 3rd stage drivetrain by now, need some more Laser cut plates to fix the motor gearbox

 

[hodala]

I'm not an E guy, can anybody tell me if the e throttle could replace the speed control switch or not

 

[amberwolf]

Depends on the voltage range the controller gets from that potentiometer vs the motor operation.

If it's not marked on the controller or it's manual, then if you measure the voltage on the center pin of the pot when the motor starts spinning, and it's below about 0.8-1v, then using a hall-type throttle is going to always spin the motor by however much that voltage on the pot does (since a hall throttle only goes down about that far; some of them only go down to about 1.2-1.4v when "off").

And if the motor keeps getting faster above about 3-4v, then using a hall throttle will not allow you to reach those speeds, either, as that's around the highest voltage most of them will output.

You can use potentiometer throttles, though. Some good ones (full grip style) are Magura and Domino, but there are cheap ones out there too, and other styles from joystick to "bell", etc. You just have to be sure whatever you get is NOT a hall throttle, and is a *three wire* pot(entiometer) throttle. A two wire probably won't work. Mobility sites often sell various types because they're common on mobility devices, and different people have different abilities to move things.

 

[neptronix]

Moved to ebike general because this is not a build thread.

 

[hodala]

Depends on the voltage range the controller gets from that potentiometer vs the motor operation.

If it's not marked on the controller or it's manual, then if you measure the voltage on the center pin of the pot when the motor starts spinning, and it's below about 0.8-1v, then using a hall-type throttle is going to always spin the motor by however much that voltage on the pot does (since a hall throttle only goes down about that far; some of them only go down to about 1.2-1.4v when "off").

And if the motor keeps getting faster above about 3-4v, then using a hall throttle will not allow you to reach those speeds, either, as that's around the highest voltage most of them will output.

You can use potentiometer throttles, though. Some good ones (full grip style) are Magura and Domino, but there are cheap ones out there too, and other styles from joystick to "bell", etc. You just have to be sure whatever you get is NOT a hall throttle, and is a *three wire* pot(entiometer) throttle. A two wire probably won't work. Mobility sites often sell various types because they're common on mobility devices, and different people have different abilities to move things.

Thanks for your explaining although I'm not really understand

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The 25H chain(Honda cub timing chain) can't fit general chain cutting tools from China, I'll buy an industrial ones to try again

 

[Chalo]

I like the spirit of invention here, but you're fooling yourself if you think that's going to be as durable as a hub motor.

My first hub motor is old enough to buy drinks at a bar, and works the same as always (with zero maintenance except for replacing the plugs).

 

[hodala]

Test run