No. He's right. Here on this forum there are not a lot of cargo bike people, and one of them is an evangelist for his hub bike and insists beyond all evidence to the contrary that a less powerful motor that powers a bike thru the axle and is thus single speed is somehow the equal of a bike that uses gears to conquer hills, for all the same reasons gears were invented to help people. Oh and the motors have roughly double the torque output on the most generous comparison (80 Nm for a geared Bafang fat hub vs. 160 Nm for a BBSHD or Ultra mid drive; 120 Nm for the diminutive BBS02).
I have built and still own 2wd hub bikes with those 80Nm motors; one on each axle. Coupled to a great big 52v battery and with twin 35a-each controllers. You know what? They struggled here in the hills of the Monterey Bay area. I didn't want to put an expensive build like that into an early grave so I built a mid drive and it ran up hills like they weren't there. Not fast (thats what you get when you gear down) but the motors weren't even strained.
And as for cargo bikes, I have a mid tail, a long tail and a frontloader (Mongoose Envoy, Surly Big Fat Dummy and LvH Bullitt). I just put about 15 miles on the BFD on a run out to Home Depot. 1/3 of it was screaming down hill and that last 1/3 was toodling along at 12 mph back up to the top of the hill I live on.
As someone who can build what he wants, I tried it both ways and I moved to a mid drive for a practical, sensible reason (knowing the difference from experience).
Of the three compared below, check out the Mongoose and look at the section where I discuss and lay out the parts list for low-cost builds.
I never planned on building three different classes of cargo bike, but I did. What are their strengths and weaknesses?
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