WOW! The valves are now silent, regardless of how fast I flutter them. Clean everything up, lube it up, and put it back together. So at this point, I'd addressed the friction spots and bind areas. Carefully dress those high spots with the files. Also lets me see high points on the valves, like around some of the brazed in cross tubes. Get all the embedded crud that I can't see out of the valves. Dress the locks, because when closed they have a sharp edge that can catch on the valve stem. Relocate the locks 180 degrees off, maximizing stability.Ĥth step. Third step, observe that the way the lock is installed on the anti-rotation guides minimizes support and lets them cock a little. Second step, notice that the slot those guides rode in were damaged from the sharp edge of the guides. Take the rifler files and carefully round them over and smooth them. So they would gouge and catch in the valve slot. Then last night, for who knows what reason, my engineering brain kicked in, and I approached the problem from a gear head perspective.įirst thing I observed is the brass anti-rotation guides have sharp edges. Some helped, most didn't, and I still had valves that clanked and occassionally dragged. I've done the usual trumpet correct fixes. Mine has been plagued with sticking clattery valves.
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