My wife and I just bought 2 TerraTrike Ramblers with the NuVinci 380 gear shift. We really like the way the shifter works and we're very glad we bought them. The TerraTrike specs list the low gear for the 24 speed as 19 gear-inches and the low gear for the NuVinci as 20 gear-inches. However, the lowest gear on the NuVinci is nowhere near as low as the 24 speed deraileur?!?!?! In actuality, my friends have a 24 speed Rambler and we compared our trikes by starting right next to each other and putting our trikes in their lowest gear and pedaling 3 complete turns of the pedals. Our trikes rode about 4 feet ahead of my friends?!?!?! This seem to be about 20% off. Could the NuVinci not be adjusted correctly?
How can I tell if the NuVinci is installed correctly?
I'm 74 years old and I need all the help I can get. I'm considering returning the NuVinci and asking Terra Trike to replace it with a 24 speed and refund my $300.