Thank you for your reply. Very helpful! Good thinking about HiGo connectors - I would never have guessed that one. The Q128 is definitely too heavy for my build, but the q100c seems great! One thing that bothers me is the huge controller (and it's cable-mess). Any chance to git a lighter controller, or an integrated one, like the keyde design ?ScooterMan101 wrote:For those Spec's and Requirements, what many people get is the Q100c CST , and rest of the kit from ... bmsbattery.com
https://bmsbattery.com/ebike-kit/614-q1 ... e-kit.html ( you would have to contact them and make sure the kit has the HiGo/Waterproof Connectors at bottom of page where there is a box to state what wheel size, also state not to ship until they make sure they send the kit with waterproof connectors)
Look up Light weight Road Q100, and other threads on the Q100 or Q128 . ( Q128 is heavier and more power than EU Reg's )
I think now you can get the Q100c CST and Display/Controller/Throttle/ etc. with waterproof ( HiGo ) Connectors.
Be sure to have all that you want before you order, prices on the parts are cheep, shipping is expensive.
Thank you for your reply; I actually pm'd you for details about your 13Kg build, but posting here is even better, so other people can learn from it. $175 including shipping beats everything I've seen until now.d8veh wrote:Xiongda make a sensorless 1.4kg rear motor that's quite powerful. They even sell it in 48v versions. They provide a Lishui controller for it with an LCD. I don't know whether the motor will work with any high speed sensorless controller. The whole system doesn't cost much - $175 for motor, controller, LCD, throttle, PAS and shipping.
There are a couple of minor negatives. There's a 1 second delay in starting with the throttle or PAS because the sensorless controller has to figure out the correct timing. There's a little bit of drag when freewheeling. You don't notice that when riding and it's no problem if you keep the power on, but you can see it when you spin the wheel off the ground by hand. Mine is still new. Maybe it goes away with time, but it might be something to do with the extra reduction ratio to get it so small.
My complete bike using this motor with 36v 6Ah battery weighs 13kg.
You can order it directly from Xiongda by email. It's the YTW-06 motor. Bonnie@xiongdamotor.com.cn
Xiongda are exceptionally good with their after sales support. I can't recommend them highly enough. If you ever need them, spare parts cost next to nothing even well after the warranty has expired.
Thank you very much: very helpful!d8veh wrote:here's the drawings and other info:
Sensorless means no position-sensing hall sensors in the motor. I don't have brake sensors on mine. PAS and throttle are ptional too, but I'd recommend fitting the PAS. In most of Europe, the throttle has to be limited to 6km/h. I think you can make it like that in the LCD settings, but that makes it a bit of a waste of space.qwerkus wrote:Thank you very much: very helpful!d8veh wrote:here's the drawings and other info:
I asked Bonnie for a quote, but she told me they have production delays, and I would have to wait 20 days. Too bad...
Also, she send me details about the controller: it also requires a PAS and brake sensors. Now I'm a bit confused: you said it's a sensorless motor. What's your experience about it ?
Thank you for clearing that one up. Which version of the YTW-06 would you recommend ? Bonnie says the 48V is slightly lighter and more efficient than the 36V version, because of smaller wire diameter and higher voltage. Yet I want the battery as lightweight as possible, and 48V system are just huge. I'm not interested in high speeds, but I need the torque when hauling my trailer.d8veh wrote:Sensorless means no position-sensing hall sensors in the motor. I don't have brake sensors on mine. PAS and throttle are ptional too, but I'd recommend fitting the PAS. In most of Europe, the throttle has to be limited to 6km/h. I think you can make it like that in the LCD settings, but that makes it a bit of a waste of space.
I don't know what speed versions they make, but you could run the 36v one at 48v in a 20" wheel. That would max out at about 20 mph. Basically, any 36v motor in a 26" wheel will go at the same road speed when run at 48v in a 20" wheel because the speed ratio is 20÷26×4÷3 = 1.02docw009 wrote:Hi, dv8eh, I got a quote from Bonnie. They cost a bit more shipped to USA. More like $250 with all the sensors/LCD. I don't need one, but I got the batteries/bikes already.
I'm thinking 36V for a front drive on a 26" bike, but also think about a 20" wheel. I should ask Bonnie if they make a higher speed wind for smaller rims. Does this motor make sense to you for a smaller rim and maybe 18 mph?