Ditto. Rotary valves are very easy to maintain and seldom cause problems unless it's due to physical damage. The most common cause of noise rotors is improper assembly of the back bearing plates. Even the old 'S-bar' linkage can be tightened so it is noise-free. Some of the plastic ball ends from the mid-70's and 80's leave something to be desired but they can be easily replaced by more robust hardware.MartyNeilan wrote:...... I would not let one bad experience with old worn-out rotary valves cause me to totally write off rotary valves. ....
I play piston horns quite a bit but find the rotary ones to be more forgiving. Especially during Volksfest. Bratwurst, pretzel, and popcorn fragments seem to 'whistle' straight through!








