I started with a pair of Rover 1 speeds in 2013, and put a 26" wheel with a rear derailleur on them. (11-32 8 speed). That helped my wife and I a lot, but after riding that way for about three years I've decided to go ahead and put the much needed triple up front ( 22-32-44). I'm investing a lot of time into these bikes so we can hopefully get more range out of them, and because I really can't afford to plunk down $2000 each on a pair of Ramblers or $2500 each on a pair of sportsters (which couldn't support my 275 pound weight anyway). However, I've noticed that my Rover really does get squirrely when I get over about 18mph. So my first question is this:
Can I continue to upgrade the Rover or should I just bite the bullet and save up for something originally designed for more speed? I mean to say, how much difference is there really between a Rover and say a Rambler other than the gears?
I'm running a Continental Top Contact II Fold Reflex 26 X 1.9 Bike Tire in the back. The wheel is a quick release that I stole from my mountain bike (a Mavic wheel). If I allow the wheel to move all the way forward it rubs the frame. If I really get on the pedals, the wheel pulls forward and rubs the frame. Has anyone run into this problem and fixed it?