Making Changes
Bell crank relocation:
To change bell crank to a different string:
1. Back out pull rods on bell crank to be moved.
2. Loosen screws on bell crank.
3. Move bell crank to new string alignment position. If there is pull rod interference, back them out and re-pass through aligned bell crank.
4. Tighten bell cranks into place.
5. Refer to leverage section and select your leverage points. Properly bush pull rods for raise or lower (short & long for lower, short only for raise) then attach through selected changer rows to bell crank slots.
6. Re-attach all other pull rods which were loosened.
Bell crank addition and re-assembly:
1. Remove all pull rods attached to or passing through bell cranks on cross shaft where bell crank is to be added or relocated.
2. Loosen knee lever hub or pedal arm, set collars and spring arms.
3. Remove cross shaft by sliding it out back of guitar.
4. Add or relocate bell cranks.
5. Assemble by reversing sets 1 through 4.
Make sure all screws are tightened firmly, but do not over-torque.
Tuning new changes:
Pedal: if possible use strobe or electronic meter tuner.
1. Remove any stretch from new strings and tune open notes to their true pitches.
2. Determine which one of the changes on the pedal will determine your pedal or lever throw. You will want to eliminate most of the free-play or ’Äúslop’Äù in the pedal.
3. If you have a tuner, you can actually determine the point of your longest change where (E) is too tight against (C). Figure10, and will affect your open note; then turn your pull rod clockwise until the tuner shows the open note is deviating from its original pitch, then back off 1-1/2 to 2 turns.
4. With both rods determined to not be tightened against changer, move desired pedal and watch your tuner or play it by ear.
5. Set cam (B) by tightening it to the rail at the point where your longest pull is, just past the desired note when (A) stops against (B).
6. With your cam set (thus establishing your pedal throw) tune all other changes on that pedal to pitch. Usually you will be backing off these other pull rods.
7. Re-check all the changes, with the addition of changes you may find your original note does not come perfectly up to pitch so:
A. Make sure string ’Äòopen’Äô is still in pitch, (not stretched). B. Then, if need be, loosen and re-tighten cam to accommodate true pitch on your original note.
’Ä¢ This procedure is the same as used at the factory. If you are having problems, repeat it. Most tuning problems are caused by some negligence or error in the execution of the above procedure.