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I am running it in a 26 inch wheel. I am using Lipo nano Turnigy 4000 mah 5s 18.5v x2 link here. The controller not sure of the make it all came second hand (unused) but it is 15amp I believe.

Thanks for the quick responses I was thinking of a cute wonder if I can use the same rim. What's currently the best source for cute motors? Cheers

As some of you may remember last year I built a lightweight electric bike around the Tongxin motor and lipo nano. Ive had great fun running it with no real problems. Suddenly today while on a longer than usual run there was a metallic crack from the hub then that was it no power. The...

That's interesting so more volts do equal more RPM even on a hub rated at 190rpm. I am currently running a max of 36V which tops out at 15pmh

Looks like a minimum order of 100 from the Outrider link. What's wrong with putting it on a 26" wheel is it a speed/torque issue?

I am wondering if anyone has one of these motors they wish to sell. I have built a little bike see this thread.. It works really well but tops out around 14/15mph so I would like to try the faster spinning motor. Thanks in advance.

Thanks for all the technical info you guys know your stuff. I can see why these batteries are not used in commercial applications just overly complex for the average user. I think if I do build a few bikes for people then I would go down the BMS Battery route it seems a good way to build a...

I've just done 4 miles and tested the batteries and they are showing 3.9v. Better news, I've also just ordered the cellog 8m so looking forward to getting that. As an aside I've had a fair amount of interest in this bike and a couple of requests to build similar lightweight machines. I may be...

Thanks for the info 3.4V seems like a high number if they are full capacity at 4.1V. I checked mine yesterday after about 5-6 miles and they were at 3.7V all roughly the same. Charging took 1.5hrs. Will look into a CellLog

I've changed this now so the wiring is encased in rubber, allowing the controller to keep cool. I probably won't use this bike in really bad weather. I currently have no method of monitoring each cell on the bike, when I charge the batteries I can see how the cells discharged and whether it was...

Cheers guys, these batteries seemed to have no problems under load nothing go warm. I picked the nano lipos as they seemed to have a good spec, lightweight, very little resistance and therefore not be too stressed under load. They also apparently have twice the life cycle of a normal Lipo...

First run Well after spending a good few hours in the garage leaning how to solder putting all my EC3 plugs on then soldering wires heatshrinking then Anderson connectors I was ready to test out the system. Battery charged and checked all wiring ready, connect the batteries, flickering red...

All the bits have finally arrived - thanks Alan for the hub and wheel etc. The batteries won't fit into the expensive Camelpak bottle so I've got an aluminium one now and cut the top off it. Really nervous now though as the batteries come with next to useless plugs on the end and won't even...

I guess range is subjective when potentially so many factors are involved. The only true measure must be an average speed throttle only on a flat run. Following on from earlier in this thread I wonder whether a lighter bike will have a significant increase in range. I think I will have to invest...

That's a pretty powerful pack, what kind of range do you think it will give? I've only ordered x2 5s 4000ah packs but am hoping for around 20miles assisted

I've added up the weight of the bits and it should come to just under 4kg so I am aiming to get under 13kg for the project. Hopefully I will get some progress up next week.

Thanks got one now.

Thumb throttle for project needed anyone have one, thanks.

I've got part one completed now with the bike built and tested. Its around 9kg at the moment and the reason I mention this is that, its amazing how different it feels to ride. Once you take off the gears and all the other stuff it seems to go up hills so much easier. I had always thought...

I still may try push button control to keep is simple but am looking at Hall Effect Push Buttons does anyone have any comments on these types of switches. Hall effect linear sprung return Or Hall effect momentary I suspect this is just a push switch for hars environments ie uses magnetic fiels...