Re: Need Help with Broken Rotor Spring


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Posted by John Swensen on October 30, 2000 at 16:36:55:

In Reply to: Need Help with Broken Rotor Spring posted by Jason Baker on October 30, 2000 at 16:08:00:

Jason,
Short term, wrap a rubber band around the lower part of the arm, hook it onto a suitable part of the horn to pull the lever back up, and adjust the tension to suite your preference.

Longer term, you probably want the springs to match in tension, so you will need one from VMI (probably identical to springs from B&S). Unscrew the knurled nut at end of the axle through all the levers, pull the axle out just enough to free the first lever, pull out the first lever, remove the broken spring, replace with a new spring, slip the lever back into place, push the axle back, and replace the nut. No more than finger pressure should be necessary to pull the axle (don't use tools). Just remember that the two ends of the spring must be wound to apply upward pressure on the spatula. It may take a try or two to keep the spring in torsion while putting the lever back, but the whole job should take less than a minute.

What ever made the first spring break may cause others to break in the future, so you may want to get a set of four springs for that tuba, just in case.


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