Re: Auto shifting.
I've managed to make it work. I do let off the gas when changing the front three drives. The key is to accelerate steady. It's not a drag racing bike, full throttle on take off. I use the 28 drive for steep uphill (7+ mph). The 34 drive is level ground (30 mph). And the 42 drive is downhill (45+ mph). When coming to a stop keep the peddles rotating and this will put you back in first gear on the rear wheel. You can see pictures of the bike by going to my profile and viewing my album.
I wish I could afford to motorize a bike with a Shimano Alfine Di2 eleven speed electronic auto shift system. I know of one person who tried to use a Nuvinci electronic system but couldn't get it to work. I feel developing automatic shifting systems will be the answer for states who don't allow manual shifting but have steep hills.
Land Rider Jerry