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for a long time, folding bikes are believed to be energy inefficient. Electric assist is the game changer for folding bikes. So, e-folding bike is the next logical step forward. Bikes that can be taken into the underground, bikes that go inside lifts, bikes that are light enough to be carried...

yes, more turns per pole give more torque using the same wire. http://en.wikipedia.org/wiki/Motor_constants KM is the motor constant, P: resistive power loss torque = KM * SQRT(P) Increasing P causes increased torque.

mike, are you saying that there is more interest in the throttle only electric mopeds than assist e-bikes? nothing stops people use their road legal e-bikes with throttle as e-mopeds as far as I am aware. The power consumption will go up but still not as high as e-mopeds, about 16-20WH per mile...

there is a clearly visible market in cheap sustenable transport which e-bikes can have a big role but I fear that the current participation of bike shops concentrates mainly on expensive bikes (£1500 and more) and hinders its progress. The next big improvement is a folding e-bike that can unfold...

the M615 will work with your existing 160mm rotor.

you can change the Lishui LSW947 controller on your bike for a torque simulation one, http://www.bmsbattery.com/controller/545-s06-250w-imitation-torque-square-wave-controller.html the torque sensor from Outrider may also be easy to fit to your bike...

the M615 front + right handle comes with 100cm hose fits perfectly the Santana CDL. http://www.chainreactioncycles.com/shimano-deore-m615-disc-brake/rp-prod108802

I would do the same. The Kalkhoffs are well put together for high mileage.

you don't need to cut anything. The hoses are long enough.

dave, a fair comparison would be your Kudos Tourer against the Woosh Sirocco CDL, both have 700C wheels, both have probably the same Lishui 14A controller. Everybody knows the BPM is more powerful than the SWX. the BPM runs with 20A controllers, the SWX with 14/15A controllers. So the BPM should...

I am comparing the Bafang SWX against the BBS01 15A 250W / Bosch Active and the Bafang BPM 350W against the Bafang BBS01 18A 350W. They are about the most popular choices. My opinon: crank: quiet, efficient, light, nice weight distribution, good handling, easy maintenance and fast. hub: noisy...

what's wrong with expressing my personal views? and I am not idiot enough to insult other members, that may get you banned.

The Nexus-3 on small 20" wheels seems to do well. I wonder if someone would make a robust 4-speed hub gear for e-bikes?

crank: quiet, efficient, light, nice weight distribution, good handling, easy maintenance and fast. hub: noisy, inefficient, wrong weight distribution, poor handling, broken spokes and slow.

well done. The Woosh bikes are great fun derestricted. What's your new top speed now you know you can brake?

awol has hub bike, Tillson has crank drive and awol is looking for a new chain. Intuitively, I think we can agree that CDs wear chain, sprockets, rings faster - but the occasional posts do not prove that the difference is much. I reckon the average number of worn chains, sprockets, rings per...

this one, reported by Shemoz, looks quite interesting, except it looks like it's still being developed further: http://sempumotor.en.alibaba.com/productshowimg/1858723871-221832943/Integrated_Front_motor_for_E_bike.html The most interesting idea is the combined torque sensor and PAS...

HG stands for (Shimano) Hyperglide. Your crank is Shimano Acera, so HG. Cannondale website suggests using KMC Z99 9-speed chain.

what have I posted that upset you this time?

I think he's comparing his girl firiend's Kalkhoff Tasman with 26" wheel, Impulse motor, 400WH battery and Nexus-8 (38T front, 18T rear) against the Santana CDL 700C wheels, TCM motor, 540WH batatery and 7-speed (44T front, 14-34T Shimano TZ21 rear).