That's good Ross. I'd like to note that "secondary" compensator rods will work just as well with fixed pull-points ... only the main pull gain on step-less timing adjustment, IMO.
One point I am not sure of how best to solve, is getting "enough free-play" for rods with very short travel. On my "3 octave string raise/lower on one pedal/lever" set-up free-play on lowest string is too near zero - the changer-fingers are close to hanging on the rod in neutral. Got any good mechanical "ramp" solution for your bellcranks to eliminate the chance of rod-hanging for short-traveling changes?
Bellcranks
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Ross Shafer
- Posts: 189
- Joined: Tue Nov 24, 2009 11:52 am
Re: Bellcranks
Georg,
If I'm following you and I may not be...simply using an adjustable bell crank to attain a rod position just a tad closer to the body than a standard bell crank's options allows should do it...with non-adjust bellcranks on round cross shafts you can turn the bell crank so it actuates in a different portion of its arc. This trick can be used to change the travel rate and may offer that smidge extra free play you're looking for.
If I'm following you and I may not be...simply using an adjustable bell crank to attain a rod position just a tad closer to the body than a standard bell crank's options allows should do it...with non-adjust bellcranks on round cross shafts you can turn the bell crank so it actuates in a different portion of its arc. This trick can be used to change the travel rate and may offer that smidge extra free play you're looking for.
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Georg
- Posts: 457
- Joined: Tue Nov 03, 2009 10:38 am
- Location: Mandal, VA, Norway & Weeki Wachee, FL, USA
- Contact:
Re: Bellcranks
Ross,
I know, and have my bellcranks optimally adjusted on round axles for max free-play on minimal traveling rods. Also have free-wheeling gear-down bellcranks for the most problematic (shortest) changes to get them all in good timing and tune without hang-up. Have been on my preferred PSG and worked well for two decades, but...
... I was just wondering if you had taken the "free-play problem" into consideration while developing your bellcranks and found a better solution. Would be nice to have that problem properly solved by design.
I know, and have my bellcranks optimally adjusted on round axles for max free-play on minimal traveling rods. Also have free-wheeling gear-down bellcranks for the most problematic (shortest) changes to get them all in good timing and tune without hang-up. Have been on my preferred PSG and worked well for two decades, but...
... I was just wondering if you had taken the "free-play problem" into consideration while developing your bellcranks and found a better solution. Would be nice to have that problem properly solved by design.