Freewheel on motor vs freewheel on wheel.

[kannary]

Crazy....years visiting this site for info, first time asking...I think

I have a highly modified Currie GT Tsunami that I use as my work vehicle: Food delivery. Last year I put close to 8,400 miles on mine. I go through parts quite quickly....One of those parts if the damn freewheel sprocket on the motor that, even with hardened teeth, last me 3 months at best...And it bugs me cause of the cost. It's just a plain #25 chain 15 tooth B-hub sprocket with an 18mm ID and a HF1216 clutch needle bearing pressed into it, but it doesn't get much cheaper making it yourself. And the needle bearing, with its plastic cage, is prone to failing all the sudden. (although is very easy to fix...swap the hf1216)

So I was considering switching the freewheel from the motor to the wheel. Same ratio (15 tooth fixed sprocket in motor, 90 tooth sprocket mounted on the freewheel.) I am also considering switching to #35 chain for longer chain life,

Aside from the difference in noise (the motor freewheel is fairly silent), is there any difference between having the freewheel on the motor vs on the wheel? Any considerations as far as torque, speed, known issues...?

Budget is tight, this scooter is my life line, can't make a mistake.

(and just for the chuckle: How about freewheels on both?)

 

[Dui ni shuo de dui]

Aside from the difference in noise (the motor freewheel is fairly silent), is there any difference between having the freewheel on the motor vs on the wheel? Any considerations as far as torque, speed, known issues...?

Nope, that should be exactly the same.
As to why exactly this thing would need a freewheel, I'm a bit puzzled. Is that because the controller cannot manage back currents?
A freewheel seem unnecessary to me.

Budget is tight, this scooter is my life line, can't make a mistake.

(and just for the chuckle: How about freewheels on both?)

Freewheel on both would add more failure probability, so I see no point on doing that.

It seems like you are on a tight budget, but if I were you I'd try to find a hub motor and a controller and replace all this powertrain which looks a bit outdated to me. You can probably find some used ones for very cheap. Hub motors are extremely reliable, can run entirely silent, deliver a lot of torque and are likely to be more efficient than your current setup. You won't need a transmission for these so that would also solve your freewheel issues.

 

[kannary]

Hey. I appreciate your response.

Funny thing...I have not one but 5 hub motors, I was considering that as well and now I think I will definitely look into doing just what you suggested...