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Will I run into issues with the high torque required on a 20" wheel?
The smaller diameter will lower your gearing so torque shouldn't be a problem so long as you can lace the hub into the rim.
Emyr-
The smaller diameter will lower your gearing so torque shouldn't be a problem so long as you can lace the hub into the rim.
Looks like the biggest problem might be overheating, what with slow speeds up hills and large loads.
Assuming these hub motors all have some kind of throttle instead of an auto-assist?
Jon.
On the topic of electric cargo bikes, anyone have any experience with retrofitting hub motors?
I just need a little assist for the hills of Sheffield when loaded (looking at a maximum of 150kg of total weight, and no desire for massive speeds). These front hub motors look nice and simple, and the battery could be mounted under the loading area quite neatly. Will I run into issues with the high torque required on a 20" wheel?