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Does raise the question, again, of why there's no UK/EU supplier equivalent of BMSBattery and Greenbikekit that can source the most common 8fun and Cute motors, wheels and bits and pieces. Even on eBay. Going direct does work, but shipping takes ages and costs a lot. And you always seem to get...

Is there a UK supplier who can source the Cute/QBK 10 CST in a 700c wheel?

. Ah. I assumed it was an Aurora as the thread was originally about that. But perhaps not.

Go and check BMS Battery or GreenBike, http://www.bmsbattery.com, http://www.greenbikekit.com/ and look for a battery of the same size and shape, 36v, LiNMC. As far as I can tell they come in two lengths for 36v-15Ahr and 36v-10Ahr. But the locking mechanism and extrusion hasn't changed so it...

Interesting that on endless sphere, the first comment recommended the Q128 with the usual "more is better" view. ;) My current ride is an Alien Aurora with the big BPM motor. What I'm trying for is a better quality bicycle that's lighter and more discreet but with about the same performance or a...

Decisions. Decisions. Which would make a better base for a stealth 48v-15A rear drive motor on a bike with mechanical 160mm disks and Shimano Acera 9sp rear mech? The Cute/QBK 10 CST using the existing 9 speed cassette, or the Bafang/8Fun SWXH with a DND 9sp freewheel. The Cute has a LHS cable...

Well I fitted a 13g one. We'll see how it works out. Probably better than using the old one with the end turned over into a U. ;)

The 13g tiller spokes turned up and they're just right except it looks like the originals are 12g not 13g. I'm drawing a blank on finding another source. There are a couple of places in the USA that do Sapim 12g for BMX but only in short lengths. johnc46 the head popped off. I've PMed you.

It's always slightly puzzled me about this that lighter weight spokes are less likely to break.

My much loved and much abused Alien Aurora has broken a rear spoke. These seem to be heavy duty BMX spokes and look like 194mm, stainless, possibly 13 gauge or even 12 gauge. My local bike shop can normally supply custom spokes but his thread cutter/roller doesn't go up to that diameter. Given...

The battery came with the plug. I used the existing controller that came with the bike.

Happy ending to this. I bought this from BMSBattery. 36V15Ah Li-Ion Alloy Shell EBike Battery Pack - BMSBATTERY The mount is exactly the same. It slides onto the existing Alien Aurora rack plate, the lock pin locks into the same hole in the plate. The one catch is the need to remove the panel...

Sorry, we did this once before. The battery uses a panel mount female socket. What's needed on the bike controller side is a panel mount shrouded male and that's the one that's hard to find. [later] Found it. Schurter Group - Home - Components - Connectors - Connectors (Inlets/Outlets) - 6048

http://www.bmsbattery.com/36v/232-36v-15ah-lithium-ion-electric-bicycle-battery-pack.html The design is almost exactly the same as the original, just a bit longer. It fits onto the same base plate and the lock engages in the same way. The connectors are in the same place at both ends and the...

Yes it did. It's a cable connector, but it fit neatly in the hole left by the stock one. Even if BMS hadn't supplied they're easy to find from Maplin or such like. What's nearly impossible to find is a panel mount female plug.

Interesting that the controller "just works" at 48v. Two possible issues that somebody could comment on. 1) the 4 led battery capacity display. This is going to be calibrated for a 36v LIMn or LiNiCoMn battery. Presumably it will always show all 4 lit no matter how much of the 48v batteries...

The Aurora really needs an LED rear light. So I created one out of a broken bulb, some spare LEDS and a resistor.

Very happy with my Avid BB7 180mm on the front. It just works. I've stuck with the original brake on the back as it works well enough. The main thing is it's still quiet.

The comment about 25A was not about whether the BPM could take it, but about the judder you get. If you use an on-off throttle or an on-off PAS, and you start the motor from stationary or walking pace, the startup judder as the sensorless circuitry works out which direction to power the motor...

I think the thread on endless sphere about this controller has a couple of posts from me! ISTR Lyen saying that 25A continuous is fine and 30A is just about OK. So you're pushing it. It's a standard controller but with updated FETs pretty much as I believe NRG and others have done. These have...