Henry Brooks
From:
Los Gatos, California, USA
|
Posted 20 Mar 2011 2:24 pm |
|
I have noticed that my left knee lever right which lowers strings 4 and 8 a half-tone needs to travel a lot further then the left knee lever left which raises the same strings a half-tone. The raise fingers move about 1/8 inch while the lower moves 3/8 inch. Problem is that the left knee lever right travels so far that it can almost pull my foot off the first floor pedal. In looking at the rodding chart for a couple of other all-pull guitars, triple/raise triple lower, I see that they too require the pull rod to be in the changer hole nearest the bottom of the guitar and in the bellcrank, pull-bar, number 5 slot. In other words there requiring all the pull the guitar can deliver just to lower a half tone. The fourth string, 0.014, seems to be the one that is requiring all the travel. I'm beginning to think that there is a loss of travel caused by the reverser mechanism. Wondering if any of you have notice this problem on your all-pull guitars and if you have found that moving the change to the right knee lever left, no reverser mechanism required, reduced the travel? Understand that the guitar is working but I find that if I'm not careful the first floor pedal won't be all the way dow.
Henry |
|
Pete Burak
From:
Portland, OR USA
|
Posted 20 Mar 2011 3:48 pm
|
|
It sounds maybe more like a reversing mechanism problem than a lowering problem.
You could press inward (with a screwdriver or allen wrench) from the endplate-tuner end, on the string 4 lowering/raising fingers, and see if there really is a difference in travel requiered to raise/lower a half step (this test eliminates any linkage slop).
I think eliminating the reversing mechanism for LKR/RKR would be a good idea.
I have done this mod to a Sierra for RKR, lowering 4 and 8, by installing a cross-rod near the bottom of the apron, with the bellcrank mounted above the crossrod.
Move the knee to the right, the bellcrank pulls to the left... no reversing requiered.
It worked out great for E lowers, very short travel, no slop, and a nice hard-stop feel.
Here's a pic:
 |
|
