September 20, 20169 yr a motor that doesn't come in the CST flavour sadly. Are you talking about the Q100? Here's the CST version: https://bmsbattery.com/ebike-kit/618-q100c-cst-36v350w-rear-driving-ebike-hub-motor-ebike-kit.html?search_query=q100c&results=7 Also, the Q100s don't run very well sensorless, so stick with a sensor controller, like S06S or KU65.
September 20, 20169 yr Are you talking about the Q100? Here's the CST version: https://bmsbattery.com/ebike-kit/618-q100c-cst-36v350w-rear-driving-ebike-hub-motor-ebike-kit.html?search_query=q100c&results=7 Also, the Q100s don't run very well sensorless, so stick with a sensor controller, like S06S or KU65. I didn't put it very well, I meant that the CST doesn't come in a 260 version, though you could run a 201@ 48v.
September 20, 20169 yr Author Decided to go for this one: https://bmsbattery.com/ebike-kit/632-q100h-36v350w-front-e-bike-motor-wheel-ebike-kit.html Only thing that bothers me about it is the radial spoke pattern, think it'll be a problem?
September 20, 20169 yr Author Gotcha, so a 700c will be standard pattern, thought it looked a bit odd. Thanks
September 21, 20169 yr I've had an answer from Jimmy, I'll put it up here because what he says may interest others: Hi Ben, Thank you for your email regarding your battery requirement. You have chosen a good time to contact me as I have just acquired the best battery welder in the universe. The welder is the 250i2 EV from Sunstone Engineering and is a pulse arc welder that can weld copper interconnects. Usually nickel is the chosen interconnect material which is 4 times less conductive than copper. Copper is only second best conductor of electrical current to silver (100%copper, 105%silver, 22%nickel), the due to being a difficult metal to weld, nickel is most common. The ultimate battery would be one that has copper interconnects which would have the best power, lowest overall resistance (creates heat), longest life cycle, just to mention a few of its benefits. The choice would be either Panasonic NCR18650B 3350mAh, or NCR18650PF 2900mAh. Using the B cells the capacity would be 17Ah or 14.5Ah with the PF cells (5P10S configuration). Cycle life is 500. I would strongly recommend the Boston Power Swing cells (USA) which would be over 15Ah with a cycle life of 2000-3000. These are excellent cells that NASA use in their robots as well as Volvo in the ev. I normally use 25A continuous current discharge high quality BMS with my builds which means cooler running and higher reliability. The price of the build would be £325-£350 depending on which cells you choose. Needless to say, I'd be using copper interconnects for obvious reasons. Best regards, Jimmy Anyone heard of the 'Boston Power Swing cells'? Sounds like some sort of 60's elite wife swapping group:eek: Re the Boston Power Swing cells, here's a link which you may find helpful: http://www.boston-power.com/products
September 24, 20169 yr Author Bike bits ordered, all from Rose. Front Magura HS11. An Ergotec 300mm quill stem and the Shimano 21 speed shifters. I'll be ordering the kit when the debit cards cooled down a bit. Yet to make a final decision on the battery.
October 3, 20169 yr Author Just tried to order the wheel, controller etc, from BMS. It came to £124.35 BUT it said shipping would be £100.87 ! Is that usual?
October 3, 20169 yr Author Well I had started to look at the Panda bikes front wheel kit for £250, at least it's only being delivered from Nottingham. But is it any good?
October 3, 20169 yr The Panda kit is very good. You get a guarantee too (sort of). I prefer the Q100H motor, but there's not a lot in it.
October 4, 20169 yr Author Thanks d8veh. The Panda motor says it's 187rpm for a 700c wheel, whereas the BMS one would be 260rpm. I guess this would mean more torque, lower speed from the Panda? Also I'm putting a Magura HS11 on the front, the Panda spec says that the kit is unsuitable for hydraulic brakes. I'm guessing that this is just because of the supplied cut off levers, not that the twin wall rim isn't suitable. I'm veering towards the 'Eco' kit for £220. As far as I can see the only difference is a LED display instead of an LCD. For a guest bike I think that would do. I guess that would loose the de-restrict function, oh well.
October 4, 20169 yr Yup, you've figured it all out pretty well except that you don't need to worry about derestriction with a 187 rpm motor. You don't necessarily get much more torque, but you get better efficiency at low speed, which means that you can climb steep hills for longer before the motor heats up and you use less battery. the torque depends on whether they change the speed by the motor winding or the internal gearing - most likely the motor winding, which doesn't give more torque.
October 4, 20169 yr Author Well for west Wales, that sounds just the ticket, lots of slow speed hill climbs around here.
October 5, 20169 yr Author Magura brake, gear changers and quill stem arrived from Rose today. Just ordered eco kit from Panda. The bullet has been bit and the fun begins.
October 8, 20169 yr Author Panda Eco kit ordered 11pm Wednesday night, arrived 11am Friday morning, pretty good. New quill stem is 'rost frei', so spent the morning with sovol autosol on the handlebars. Can't resist shiny things. Perhaps I was a magpie in a previous life!
October 9, 20169 yr Author Got most of the kit mounted, but I am struggling to find a location for the controller. There is a box supplied which is supposed to take the controller + all the plugs packed in. It's a 15A controller with fluted sides to loose heat, and I'm not sure it's a good idea to pack plugs and cable around it and seal it in an unvented box strapped to the frame. Any thoughts? They also provide a Rosewheel bag for controller and spare cable, but this won't fit the frame.
October 9, 20169 yr What size box is it? I have the huge one and there is plenty of room for the cables. My Mxus kit came with an under saddle bag, great for warming the seat in winter!
October 9, 20169 yr Author When I put the controller in it, the plug from the motor wedges it in across the width. That's before I put all the other plugs in there. Not sure how much free air would be left tbh.
October 10, 20169 yr Author OK, thanks d8Veh. Think I may just about be able to get the frame bag, just above the bottom bracket, to hold extra cable length.
October 10, 20169 yr Author Enjoying myself routing and rerouting the cables - getting there. Was just going to drop the bike off the stand and realised I'd forgotten to order tyres. WOT,,,,,REALLY? I know. I put it down to a mixture of age and childlike excitement. Marathon plusses to be ordered forthwith. £22.99 seems to be current best price Anyway, can anyone tell me what these are called please: I need to get some so I can match the battery terminals to my own bike
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