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As the industry is already at 11 speed they are not making the higher quality cassettes for the 8 speed any more so there is less choice both quality wise and ratio wise year after year on the 8 speed. Also think about in the future if you go to a cassette body if it all aluminium engagement...

Good old GOOGLE Maps is wonderful thing, my commute is 2.8miles, on the way home it worst. In the first 1,5 miles nearly all up hill, a rise of 300ft, this averages out at 4%, but the first half of that i just crawl along in 28/32 (could push higher and go faster but i can do that gear and not...

great info thanks, So this adaptor spider allows you to retain 2 front rings, (as you say you are running 42/32.) http://precialps.com/uk/accessories-bafang-bbs01-bbs02/7-adapter-spider-bafang-bbs01-bbs02.html

52/36 is standard compact, with a 11/28 rear cassette, so on a road bike you have down to a 36/28 as your bottom gear, you wont find roadies climbing hills in the 52! if they did the 36 would be pointless. I max out peddling my 40/12 at about 25 mph (downhill) running a 46 you must be doing...

I have rode the Bosch system bike and the TS is the apposed of that, when you start to struggle and are therefore and applying less TQ tot he pedals the motor kicks in and help, pretty much like tQ fill on a F1 car.

Hi, I am a cytech qualified mechanic. and run a 26" custom hybrid as a commuter bike. I'm running shimano 2x9, 40/28 to 12/36. I would like to try out on of the 250w kits. I have 2 long steep hills on my way to and from work and regularly use 28 to 32 gear, so i can see just having a 46...