intonation help

[xwpx]

I have a 60's SG that I have been reworking. I recently replaced the bridge to a much more versatile and more adjustable one.
I changed it out because the intonation was waaaay out with the original bridge.
the problem I am having with the E and A when I hit the 12th fret are very sharp. The D and G are a lot closer but still a little sharp.

Are the adjustments I need to make on the bridge? if so what do I need to do? or maybe the truss rod?

thanks

 

[amistybleu]

Intonation is set by moving the saddles forward or back with the adjustment screws. this should help.

http://www.tunemybass.com/bass_setup/setting_bass_intonation.html

 

[xwpx]

they are all as tight as they can go. it helped but didnt fix the problem. should i move the bridge back on the body?

 

[amistybleu]

they are all as tight as they can go. it helped but didnt fix the problem. should i move the bridge back on the body?

No, don't move the bridge. What kind of bridge do you have, send a pic if you can.

 

[xwpx]

its a Schaller bridge

<img src="http://i49.photobucket.com/albums/f258/wasted13potential/Picture005-1.jpg"
>

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<img src="http://i49.photobucket.com/albums/f258/wasted13potential/Picture004.jpg">

 

[amistybleu]

Sorry my lame overly protected work computer wont let me see the pics. what do you mean when you say your saddle adjustment is as tight as it can go. try centering your saddles and then tune the bass, check intonation and if you are flat move the saddle foreward, if you are sharp then move the saddles back.

 

[xwpx]

the saddles are back as far as the can go, its different for each string but they wont tighten anymore

 

[xwpx]

i think im gonna breakdown and take it up to the local shop and fork over some cash to have the tech look at it.

 

[MtManiac]

i think im gonna breakdown and take it up to the local shop and fork over some cash to have the tech look at it.

How'd this work out for you? I'm not a tech, but I think that if you measure the distance between the nut and the 12th fret, you should try to match that between the 12th fret and the saddle? Maybe you could also try detuning, then loosening the saddles (bring them towards the neck), then re-tuning, and then adjusting your intonation.

 

[T-Bird]

Hi.

Nice Kay? Is it a Kay?

But to Your problem. This is what I do in a similar situation:

I determine the bridge location with the G-string saddle at its forwardmost position ie. nearest to the neck.
Then I measure the 1/2 scale lenght from the nut (or zero fret) to the top of the 12 th fret. This distance should be the same as the distance from the 12 th fret to the slot in the G-string saddle. If the saddle movement is restricted (ric) I add the G-string thickness once ( or twice) to the latter distance and position the bridge temporarily there.

I adjust the rough intonation for the other strings with the rule: Move the saddle back the thickness of the string, measuring from the previous saddle. Obviously working D-A-E (G is already done)

If The E-string saddle doesn't seem to have enough adjustability at this point I move the bridge additional 2mm back. Or I mill a new saddle for the G, or E string.

Sideways I like to have a little bit more room with the E, than with G, but that's entirely up to You.

When the position is determined I drill the pilot holes to the body and install the screws.

This should get the job done, but as I am a newbie here, I think that You might want a second opinion, so to speak.

Regards
Sam