Mid-motor or rear-hub motor systems? | Coh&Co Copenhagen

At Coh&Co we produce unique bicycles ideally suited for the urban environment. A growing portion of these are e-bikes. E-bikes have been around for almost 130 years, it is however first during the past decade or so that they have managed to come of age. Much of this is due to battery technology and controller technology. Modern lithium-ion cells have a power density greater than 4 or 5 times that of an old-fashioned lead-acid battery from yore. Just as important as power density, they have gotten much smaller occupying less than one-twelfth of the space when measured in Wh/L. That means there is much more zoom for the room and less weight to push around.
Read more in our Journal here: www.cohandco.com/an-electron-...

[@tettazwo9865]

I am very happy with my single-speed bike with a hub motor.

[@riopugh8220]

Mine is the same. A dyu d3f. Single speed, hub motor.

[@Ondrej84]

I am more curious why you use radial lacing of the rear wheel 😮

[@cohandco]

We use radial lancing only on our electric version of the smaller-wheeled Siggi folding bike. Because of the motor, there's just not enough space, so it's just simpler with radial lacing. On our larger models we use single or even 3-cross lacing

[@lafamillecarrington]

How much energy do you recover with your KERS?

[@cohandco]

KERS can recover up to 10% energy :)

[@DemiGod..]

What is with all these side shots? Stopped watching as irritating.

[@cohandco]

Noted 👍