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The cable comes out the non drive side on the Q100 but it comes out the drive side on some other motors. Also the cable folds down quite close to the axle end (there is usually a slot) so folding should not be a problem.

Look at the early days of aviation and the automobile. People in sheds designed, invented, built without the need of any governing body, association whatever. Yes inventors died. Yes they killed innocent bystanders (a few). But that is the cost of progress. Cars and planes continue to kill...

You can run the Q100 at 48V but it isn't as beefy as the Q128 so you need to limit the Amps to 15 A https://endless-sphere.com/forums/viewtopic.php?f=2&t=54297 (with posts from d8veh). I have it on my short list and will run it at 12.5 Amps x 48 V - 600 W because it only weighs 2 or so kgs...

Yes worse. Not much worse but worse, you will get a workout.

I love the Winora Radius not only a proven motor but much better design IMO. Another one I like is the orbea katu https://www.orbea.com/int-en/brands/katu-e/ which is Bosch powered. I have seen this bike in the flesh and it is a very nice piece of kit in a small package.

https://www.trekbikes.com/us/en_US/electric-bikes/super-commuter/super-commuter-8s/p/1367000-2017/ That is how to do curves...

I agree with Eddy on the BH bikes look. Bafang Max motor mount? How about a horizontal dropout version with a nexus 8?

https://www.e-bike-technologies.de/index.php/en/connectors/higo Not cheap but my next controller is going all Higo.

They have these little Island holiday camps up in the north for refugees. Kind of basic accommodation, the staff isn't too friendly but hey the weather is great!

I'm pretty sure I calculated Wh for a 36 V battery above - tired... The balance board makes paralleling 4-5-6 packs as easy a plugging them in. I can't see you needing more than 32 Ah with 32 more as a backup but I may be wrong.

Definitely gocycle: small, light, automatic gears...

On a city/trekking bike? With balloon tyres? Your roads must have gotten really bad since I was there in the 80's :D The fork weighs 1.33 kg compared to 2.2 kg, remember we are talking about city/trekking, weight matters when you have to man handle a bike with loaded panniers through trafic. I...

You are over complicating and as d8veh and I tried to explain human error is where your LiPos will go wrong. 6 X 16 Ah should get you across the Atlantic nicely on one charge... Parallel 4 x 16 Ah packs using your reinforced wiring balance board, plug your balance cables in, plug a LiPo alarm...

Others like the comfort of a couple of Big Bens which now come in plus versions with extra Kevlar.

1. get rid of the battery on the rack, not only ugly but weight too high up and back heavy 2. if you want to do curves try and do it without needing too many reinforcing gussets 3. step throughs I like: https://www.orbea.com/int-en/ebikes/optima-asphalt-30-18...

Correction: Weak cell group if you have a weak cell it will drag all the others in the same parallel group down. I have a weak cell in the 4S multistar pack in the photo above. It hasn't given me any trouble but I watch it. It is 0.2 V off the other cells, the RC guys say 0.3 V is too much and...

Now if Wisper would only design an attractive trekking, city or road bike... :rolleyes: We know you can do it but you keep telling us the market wants ugly and heavy! Remember there is a new generation of old people on the way, ones that grew up with Habitat and IKEA and half decent industrial...

What we need is an official e-bike racing class. Think of all those teams innovating on light weight - high powered systems! Each team could use a set number of 18650 cells of a specific mAh rating and everything else would be left up to them to invent. Think of the trickle down to us mere...

I was such a bad lier that I gave up early and always told the truth to my parents. One day my mother said "You know sometimes I wish you had been a decent liar like all the other kids, you're making my hair go grey!"

I have the huge version from BMSB: You could probably fit one of your tiny batteries in there! Keeps all of the extra wire tucked away and out of sight. Has started to rattle lately so you have to tie the controller down in mine.