The bike shop finished my wheel yesterday and I installed it last night and this afternoon. It is a Shimano Nexus Inter-8 Premium Internally Geared Hub with a roller brake. It is absolutley awesome. It shifts flawlessly and without hesitation or any notice at all other than the rpm change. I back off the throttle when I shift. It downshifts like an automatic transmission in your car. It is the smoothest ride yet for me. This hub is the red band which is a beefed up version. It has sealed bearings which is comforting to me. I also have sealed bearings in the front hub. After a few test runs I went on a ten mile ride this afternoon. The bike performed beautifully. I couldn't be happier with it. It tops out about 45 mph and easily cruises 30-35 mph. It took all the hills easily by downshifting. I am running a nine tooth sprocket on the crank side which lets the engine rev quickly and gives it plenty of torque. I guess one reason I'm so pleased with it is because I wasn't sure it would perform well at all on a motorized bike. I had a three speed that jerked so badly when it shifted I couldn't keep chains on it. It also bent the rear axle. The roller brake (don't know why they call it that) also is quite impressive. It will slide the wheel at low speeds.
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