Grin Wheelbarrow motor would make a great cargo bike motor with Phaserunner

[ebike4healthandfitness]

Even with a 375 lb total load it still climbs a 20% grade at over 80% efficiency:

Motor Simulator - Tools

Our ebike motor simulator allows you to easily simulate the different performance characteristics of different ebike setups - with a wide selection of hub motors modeled, and the ability to add custom batteries and controllers and set a wide variety of vehicle parameters you'll be able to see...

ebikes.ca

 

[G8trwood]

Supposed to be noisy vs hub.

 

[ebike4healthandfitness]

Supposed to be noisy vs hub.

The noise isn't that bad.

I actually like the noise from the all steel gears myself. Plus, I know they will be tough.

Perhaps the only thing Grin needs to change is how the magnets are attached to the rotor. AFAIK, they are glued on but on high speed (surface mounted magnet) inrunners like the Sur-ron and Talaria they are screwed down as shown below:



P.S. The inrunner on the 2023 (and onward) Talaria is IPM.

 

[neptronix]

That motor is a G311 with a 30:1 gear ratio and a rim built in ( plastic? )

Would probably make for a nice mid drive motor on 36v ( ~80rpm loaded ), if you could re-shell it.

 

[G8trwood]

The noise isn't that bad.

I actually like the noise from the all steel gears myself. Plus, I know they will be tough.

Perhaps the only thing Grin needs to change is how the magnets are attached to the rotor. AFAIK, they are glued on but on high speed (surface mounted magnet) inrunners like the Sur-ron and Talaria they are screwed down as shown below:

View attachment 352766

P.S. The inrunner on the 2023 (and onward) Talaria is IPM.

I was looking at one for a mobility chair for my brother.
He thought the noise from grins video was a bit high. Would be interesting if if could be put in a 16/20x 4 rim.

 

[ebike4healthandfitness]

How about instead of 72v, 52v was used along with field weakening? This in order to keep the ~20 mph top speed with a 29" tire while using a more common voltage

That or use the very fast wind for G310/G311* also with 52v but without field weakening (re: 52v with the very fast wind comes out to ~same unloaded wheel speed as 72v with the standard wind and therefore doesn't need field weakening to get 20 mph)

Of the two alternatives I proposing above I am assuming the standard wind at 52v with field weakening would have more torque but the very fast wind at 52v (without field weakening ) would have better efficiency at top speed.

*The Bafang G310/G311 is the motor which the Bafang wheel barrow motor uses (i.e. The Bafang Wheel barrow motor is a standard wind (Kv 8.526) Bafang G310/G311 with an additional stage of gear reduction added to it and the whole thing is mounted in a different hub shell.)