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Machine screw that sets pedal travel on Emmons

Posted:
Mon Mar 30, 2026 6:38 pm
by Rigby
Does anyone know the size and thread of this bolt?

I need to get a shorter one as the head is hitting the metal part before the tip hits the cabinet.
Re: Machine screw that sets pedal travel on Emmons

Posted:
Mon Mar 30, 2026 8:05 pm
by JohnDavisStringsHere
how about take it out find a couple of nuts that suit the thread and wind em on it then cut a bit off and use the nuts to clean the thread before replacing it
Re: Machine screw that sets pedal travel on Emmons

Posted:
Mon Mar 30, 2026 9:00 pm
by Rigby
I doubt I have any nuts that fit, it'll be an Imperial size for sure. Not to worry, I can take it into BAPP tomorrow and get them to hunt for something.
Re: Machine screw that sets pedal travel on Emmons

Posted:
Mon Mar 30, 2026 9:01 pm
by bob adams
6/32

Re: Machine screw that sets pedal travel on Emmons

Posted:
Mon Mar 30, 2026 9:38 pm
by Rigby
Thanks Bob.
Re: Machine screw that sets pedal travel on Emmons

Posted:
Tue Mar 31, 2026 9:41 am
by Zebedee
Is that your A pedal or C pedal
If it's your A pedal then I think there may be too much slack in the raise rods
If it's the C pedal, the slack is necessary
Re: Machine screw that sets pedal travel on Emmons

Posted:
Tue Mar 31, 2026 10:56 am
by Rigby
It's the C pedal. At the moment, if it's set up so the C pedal raises the 4th string all the way to F#, it doesn't quite leave enough slack for the D lever to lower it to E flat. So I think I need to compensate by increasing the amount of slack and also increasing the pedal travel.
Re: Machine screw that sets pedal travel on Emmons

Posted:
Tue Mar 31, 2026 1:24 pm
by Zebedee
You need to have more movement of the changer finger without much altering of the C pedal travel
This can be achieved (albeit at the expense of a slightly heavier C pedal and F lever pull) by making sure that the raise hook wire is in the changer finger hole nearest the axle
Re: Machine screw that sets pedal travel on Emmons

Posted:
Tue Mar 31, 2026 2:36 pm
by Rigby
Thanks, yes the raise hook wire is already in that position. I think there just needs to be a little more travel, I can't see any other way to get both changes in tune.
Re: Machine screw that sets pedal travel on Emmons

Posted:
Tue Mar 31, 2026 2:46 pm
by Zebedee
Have you got the correct string gauge for the 4th string?
It should be a .014" plain