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Tern Quick Haul P9

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Jez Ash's picture

Jez Ash

Jez spends his days making robots that drive cars but is happiest when on two wheels.  His roots are in mountain biking but he spends more time nowadays on the road, occasionally racing but more often just riding. 


1 year 11 months ago

Bosch's technical data suggests the difference between the performance of the various drive units essentially boils down to max torque and the % support they offer:

1 year 11 months ago

So are you saying that the "continuous rated power" and the "peaks" are open to a degree of flexibility, and possibly the "continuous rated power" becomes just an occasional if necessary interlude between a solid succession of "peaks"?

Alex Bowden's picture
1 year 11 months ago

Put simply, UK legislation states that the "maximum continuous rated power of the electric motor must not exceed 250 Watts" which allows for higher peaks.

1 year 11 months ago

for £200 less you get the less powerful Active Line Plus motor

I have probably asked before, but I don't recall understanding the reply - given that these various motors are all capped at 250W by law, how does one output more/less W than another? For any cargo-bike application I find it hard to credit that a manufacturer would voluntarily throttle the power on one bike merely so they could genuinely boast of more power on another, given that 250W is hardly generous to begin with for hauling heavy cargo up a hill.


I do understand that the manufacturers marketing blurb will muddy the waters and talk fast and loose about "more power" in laymans speak, but in terms of the laws of statute and of physics, how?

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