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 Post subject: 4001 bridge/saddle questions
 Post Posted: Tue Oct 30, 2012 1:45 am 
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Joined: Thu Nov 16, 2006 3:27 pm
Posts: 98
Location: New Plymouth, New Zealand
Hi all,

The bridge in my 4001 can be rocked back and forth (along the axis of the strings) fairly easily even with the strings on.
Is this meant to happen?
If it is then is there any preference to it being rocked closer to the mute or towards the tailpiece?

2nd question - on the G string I was adjusting the screw for the intonation. The screw was a bit tight so I carefully applied some light oil, but when I got the screw to turn it came out of the bridge completely... as if I have stripped the threads in the bridge.
If I have stripped the threads can this be fixed, or is it time for a new bridge?
New parts are not easy to get here in NZ :(


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 Post subject: Re: 4001 bridge/saddle questions
 Post Posted: Tue Oct 30, 2012 6:43 am 
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Joined: Mon Mar 05, 2007 12:33 am
Posts: 3403
Location: Denver
The string tension should hold the bridge in place if you have enough break angle. If it "rocks back" enough to happen every time you need to tune, etc., that's too much. Ideally it should only even come up when you change strings so you can "set and forget" about it. There is no preference about forward or back other than: 1) either way, the intonation changes, and only one way will be right depending on your setup; 2) rocked "forward" (upright) probably gives you a better string witness point and break angle.

If the bolt is sheared then I guess you have a big problem. Otherwise, if it just came out a healthy-looking bolt, you just need to reassemble it... spring goes over the bolt shaft as it enters the saddle base so the bolt can drive the saddle forward or back by passing through the threads. If the saddle wasn't giving you enough travel before you can flip it around if you have to.


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 Post subject: Re: 4001 bridge/saddle questions
 Post Posted: Sun Nov 04, 2012 10:56 am 
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Joined: Thu Aug 11, 2005 1:00 pm
Posts: 924
Location: Kansas City, Missouri
I had a '78 400 who's bridge would tilt back constantly. I was always reaching down and pulling it back forward, which is where it was when it was intonated. A common solution to the problem was drilling the adjusting screw pockets in the tailpiece all the way through and using longer intonation screws. So that the screws wouldn't sink into the body, you can drill a hole where the intonation screw makes contact and screw a flat head countersunk Phillips screw in it's place for it to seat against. The newer ones don't do this so much. I think it's because the pockets in the tailpiece are a little tighter and deeper.


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