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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...

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...

I'm in need of a pair of power connectors for the battery on an Alien Aurora. The battery comes from Phylion. Both connectors are chassis mount versions somewhat like kettle leads but 2 pin and subtly different. I think this battery, rack are used on several Alien models and kits or were. I seem...

Was browsing around bmsbattery and ecitypower today and came across this. They're saying available some time soon. I like this idea. Specification: 1. Voltage:24V,36V; 2. Capacity:9~15Ah; 3. Continuous Discharge:10~30Amps; 4. Range:30~50Km 5. Battery Cells: 26650,6665143; 6. Battery...

DNP 11-30T 7-Speed I've found a couple of suppliers of DNP 7 speed freewheels in the USA in 11-30t and 11-32t but I can't find anyone on this side of the Atlantic. Accessories $35+$15 shipping. I suppose £30 is probably reasonable. Any ideas of a European source?

Has anyone got any experience of the Cute-100SX rear motor? I'm especially interested if there are different wind/gear options available and what to ask for. It looks to be both more powerful and lighter than the Bafang SWXH. Are there any downsides?

There's a FAQ that came up again today. "I've got a bicycle, which kit should I buy?". This is closely tied in with another FAQ, "I've got a bicycle, should I buy a kit or buy a complete bike?". Despite the large number of Chinese kits available on eBay, one or two from fairly mainstream...

Brighton to London Future Challenge - Sat 6 Nov. Vehicles start at 08:30 Brighton to London Future Car Challenge 2010 Electric, Hybrid, ICE - Cars, Light Commercial and Motorcycles. Entry fee for vehicles is £500+VAT upwards so it doesn't make a lot of sense for individuals. However, it might...

Discussion on the E-Bike forums all too often seems to be about bragging rights. Too much is never enough! The goal seems to be a moped with occasional pedaling. I'm curious about the opposite of a bicycle with just enough occasional or gentle assist. As always there's a disclaimer here that I...

Quite a lot of e-bikes now use brushless hub motors with a 3 way speed/power switch. As I understand it these modes set a top limit on motor speed. Even on single speed controllers these also set a max speed, typically the legal limit. On top of this there is also a constant current limit and a...

I'm in the middle of trying to understand tyre sizes and choices and exactly why I, people and the bike shops should choose one size over another. I had the experience yesterday of getting several completely conflicting bits of advice from various bike shops... First some ground rules. I ride...

Inevitably I decided I wanted a set of Suzhou Bafang bits that were slightly different to Alien Cycles normal kits. The main part being the climber motor from the Aurora as a rear wheel mount and with a 700c rim. Alien Cycles didn't want to mix and match kits. So is there an alternative...