Twelvebears

Thanks Neal, appreciated. First mission is to find a better charger which will take care of my batteries.

Hi all I may be being stupid but I can’t seem to find any decent chargers which are available in the UK. I want to replace the cheap charger that came with my 48v 11.6ah battery for one which can charge to just 85-90% like the US Luna chargers Am I just looking in the wrong place? I don’t want to have to spend $45 on shipping if I can help it. Any advice or source of good chargers in the UK would be appreciated.

Hi folks, I’m Steve I’m actually a wheelchair user but I have a front attached power drive which basically uses ebike parts, so thought this would still be a good place for advice. It uses a direct drive hub motor in the front wheel and a 48v battery and controller.

This or similar would be the basis for the build: http://www.ebay.co.uk/itm/Team-Hybrid-Coyote-S7-Handcycle-attachment-for-rigid-wheelchairs-/282157970506?hash=item41b1ecf44a:g:sUsAAOSwFnFWFXYx Yes traction could be an issue, but I have a few ways to tackle that: Pick a heft Direct Drive hub motor. I won't be trail hopping, so unsprung weight is not an issue. Careful location of the battery Having a secondary rear axle which is positioned further back to shift more weight onto the front tyre.

Thanks, that's helpful. As you say judging the RPM is key - really I want a decent wattage motor geared so that to will top out around the max speed I want to hit 15-19 mph is fine as I'm after pulling power more than outright speed.

20" due to the limits of the frame I will likely have to use.

Hi All. As mentioned in my 'hello' introduction post, I'm a noob looking to nail together a e-Bike unit for my wheelchair which is capable of a bit of off-road stuff. Not a full-time user, as I often just use crutches, but there are times when having the wheels is handy for long distances and keeping up with friends. I'm not interested in the few limited commercial 'Power Trike' offerings and want to build my own for 3 main reasons: 1. They are too expensive for the performance they offer 2. Their performance is too restricted given that I will be using this off-road or on tracks 3. I'm a 'tinkerer' by nature and buying something off the shelf is just too easy/boring Let me just say, that by 'performance', I'm not talking speed here, 15.5mph when you're being towed along in a wheelchair feels plenty fast enough I can assure you, no I'm talking about having enough power and torque to cope with bump terrain and reasonable slopes. Research has led me to conclude that: DD hubs are probably out as they are both very heavy (not good for taking on and off or lifting into a boot) and not really set-up to provide lots of low speed or standing start torque. So my options would seem to be a powerful geared hub motor, or a mid-drive. So the question is whether there is actually a geared hub motor, wound for high torque that will do the job, or if a mid-drive with a suitable (probably in-hub) gear train would be a better bet. FYI weight is not a massive consideration, in fact it's probably helpful for traction in my application, and the build would need to be based on a 20" wheel. Input most welcome!

Hi Folks. New joiner looking to nail together a e-Bike unit for my wheelchair which is capable of a bit of off-road stuff. Not a full-time user, as I often just use crutches, but there are times when having the wheels is handy for long distances and keeping up with friends. I'm not interested in the few limited commercial 'Power Trike' offerings and want to build my own for 3 main reasons: 1. They are too expensive for the performance they offer 2. Their performance is too restricted given that I will be using this off-road or on tracks 3. I'm a 'tinkerer' by nature and buying something off the shelf is just too easy/boring Expect lots of questions! Regards Steve