Josh Braun
From:
Minneapolis, Minnesota, USA
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Posted 9 Sep 2015 7:32 am |
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Howdy all,
I recently finished reconfiguring an old MSA Classic. Part of that process involved re-attaching unattached knee levers, configuring pulls, etc. This was my first time really getting into the guts of the steel to make substantial changes and the like.
Anyhow, one thing I've noticed is that for certain pulls (e.g., my 3rd pedal pulling the E up to F#), I didn't have a lot of room for adjustment on the pull tuners. That is, as soon as the nylon nut was secured to the end of the pull rod, if I turned it too far it would (of course) raise the pitch of the string (instead of or in addition to changing the pull), and I'd have to back off. But occasionally it seemed to me that this happened way too quickly. I.e., I felt like I should be able to turn the nut on the pull rod further, and make larger or smaller changes, without affecting the non-pulled strings pitch.
To avoid this where I couldn't get the change I wanted, I moved the rods to different slots on the bell cranks (my thinking being that the arc traveled by a rod attached closer to the cross shaft would be less than that further away, therefore pulls attached further would have more dramatic effects on pitch).
It all ended up working out just fine, but here's my question:
Is there any way to change the sensitivity of the effect of the nut on the pull rod apart from change the position of the rod in the bell cranks? Or, what causes govern the sensitivity of the tuning and pitch capabilities of the pull rods?
I'd love to enlarge my understanding on this point. Any information would be helpful. Thanks! |
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