Have parts, need help on chanel size (friction drive "staton")

[zibbyk]

Esteban
Thank you
I would like to go with more narrow tire becouse it is easer when not using motor (planing to use 50% pedaling 50% using engine).
The set I am working is for RV when I go on trip . I have scooters 50cc and 150cc but that is problem with transport them with RV.
My question is :if I have mounted tire on my mountain bike 26 1.95 how much more narrow tire can I use with that rim? When you change from 1.95 to 1.5 did you use same rim?

Thank you

 

[Esteban]

Yes, same rim. On the driven wheel I just keep the tire pressure 5-10lbs lower than what is on the sidewall. Air pressure is another thing you can experiment with . World of difference in pedalling, which I mostly do, with skinnier city tires, than those big knobbies on paved roads.