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It has two wheels, a saddle, pedals and handlebars... I'm not suggesting a throttle lever. What does it need to make it a bicycle?

Ha, no I'm not saying you'd pedal harder deliberately to get more regen... I just experimented with tweaking a few parameters to see the effect on regen and was interested to observe this. I think its mostly the regen as a percentage is increasing because you're consuming less watts from the...

Just going back to my original post... I plotted my route up in the Trip Simulator and tweaked parameters until it matched my consumption. Then switched on regen and given the hills and speeds it thinks I'd get about 10% from regen. If I pedal harder, putting more watts in, then I get...

This patent shows how Honda are thinking for motorbikes… quite interesting although sounds like a lot of extra complexity. https://www.cycleworld.com/story/bikes/hondas-new-2wd-and-regen-braking-designs-for-bikes/

Thanks…it would be a tough decision for me to base a build around a hub motor (awaits flack) because I think the mid-drive works so well. I've got an 11 speed cassette geared for 40mph flat out and about 4mph in 1st gear, gets me up all hills even on about 150W. I think my ultimate drivetrain...

Wow.... I had no idea such things existed. I've looked at EM3EV and they provide up-to 6A chargers. So with these two things then I could go a long way to achieving my objective. Approximately 33% charge in an hour whilst eating lunch... I'd guess if the car charger is charging by the KW...

Indeed... I wouldn't take that chance if the battery wasn't rated for it.... I'm not saying my current battery is. I'm saying ideally, in future, I can buy an ebike that has a connector on it that would allow me to recharge it in any EV charger... I might look to see what my battery is rated...

Yes. I know Tesla's have to precondition (heat up) their battery before fast charging... I'm not sure if this is done electrically or if they circulate fluid through the battery to provide heating/cooling. We wouldn't want that complexity on an e-bike. I suspect my requirements aren't that...

Yes, I do pedal. I don't have a throttle fitted to my bike. I can show you a graph of heart-rate over the 85 miles? Extra battery is one solution, but if you could charge a significant amount whilst stopped for lunch then you wouldn't need to be carrying that extra weight/expense. Say you...

How long is a piece of string? Its a BBSHD running at 52v, so it has the potential to run at over 1000W. I like that it is over-engineered for my use, although perhaps a bit heavier than is necessary. I've capped the current at 20A rather than the stock 28 (if I recall correctly). It's done...

Nope... because that's a bodge solution so a waste of time and I wouldn't have something cobbled together like that on my bike. If you're comparing solutions like this with a proper solution that that perhaps explains your past experiences... All my discussions have been related to a well...

I take your point, but you could argue using a tilt sensor to automatically keep the assistance in the right ballpark is making riding the bike simpler and meaning you don't have to fiddle with the controls. I guess whatever feels natural. Regarding reliability, I suspect a solid state tilt...

The reason I originally asked this question/mused this future development is because I've been doing some longer trips on my e-bike whereby I need to use the power sparingly to get the range I desire, or plan accomodation where I can charge overnight. I have a BBSHD with a 17.5Ah battery and a...

Thanks... that's really interesting. I'll play with that some more. At first glance, it says there's 49% energy reclaim available through regen on my 20 mile ride to work!

There are some cool ideas relating to using a tilt sensor to boost power on uphill and reduce it on the downhill. Or a form of cruise control/speed limiter where power assist or regen level is modulated to stick at the desired speed. You could even monitor the heart rate of the rider via a...

I was surprised there were no current motors with an electro-operated clutch so they could truly freewheel and engage for regen as required. I think this could be part of a future motor design with integral regen. By throttle I am referring to the pedal. This is how ‘one pedal mode’ works on...

Thanks for the link, that’s interesting. They quote that the regen increases the range from 90km to 125km, very impressive… even if taken with a pinch of salt. There still seems to be some misunderstanding…I am saying the regen is only active when you are braking…the bike will freewheel same as...

Ok, thanks for your opinion! :rolleyes:

I'm not suggesting the regenerative braking is active all the time.... only when you squeeze the brake lever and in proportion to how much you squeeze it... The physics works... there is kinetic energy being wasted as heat/friction when we brake. We have the tools (motor/battery) to harvest it...

That's not a very helpful explanation! I'm not suggesting doing anything like you suggest.... I'm suggesting using the existing motor to implement regeneration only when you're braking... who knows maybe you could do away with the mechanical brakes altogether.