Re: what did you do to your motor bike today? That's cool. Rigid forks on a bicycle are right at home, even with a motor. You have to use your arm muscles some more and "pump" the bike over railroad tracks and things, but it's not so bad, especially when the fork never needs anything from an oil can, grease gun, or air pump. Fat tires are cheap suspension. Thick tubes do make a difference. Have a good ride.