jgetti, the Fuller Roadrangers like the 10-speed and 13-speed models use an air-shifted auxiliary section that's basically an over/under box, but they have synchronizers. The shifting effort on your Brownie will be far too stiff for just finger pressure, and a solenoid assist will just cause lots of clashing unless the gear speed is exactly matched. Just get used to the idea of shifting with both hands! It's easy once you get the hang of it!
Jerry
