Nice. I believe you are the gentlemen whose Youtube channel I commented on a day ago.
Nope, I don't have a YouTube channel, I did get your contact e-mail today though.
I talked about trying a NuVinci. I've changed my mind and will likely just stick with the stock 7 speed. I've been wanting to go 2 stroke but I will learn more about 4 strokes.
I want more low end torque than anything.
Any shifting system will give you enough low end torque to climb any mountain, yet still let you hit 40mph.
Though the NuVinci 4-stroke shifter is holding up, I really don't like a derailleur, your drive chain has to be thinner, and it's only straight in 3-4th.
I am liking the SA RX-RK5 5-speed best.
Nice strong HD 410 1-speed chain that is always in alignment.