Roller Nut Dimensions

[Eldon]

Here's an interesting link.

[url]http://steelguitarforum.com/Forum5/HTML/005662.html[/url

[Scott Howard]

I can't get it to work.

[burt]

http://steelguitarforum.com/Forum5/HTML/005662.html

[Bent]

Very interesting Eldon. Also to the point that a steel guitar needs rollers gauged to the string thickness. The way I see it, is that the diameter of the roller has to be gauged to the string thickness as well. And it is no more difficult than anybody with a lathe or mill with turntable can turn these out by the 100's.
All you need is the formula for the track.

I will be getting this formula before long, and I will be willing to share

[Eldon]

Scott - I apologise I thought I had the coding right, the text was right but it didn't come across like Burt's did. I'll eventually figure it out.

[burt]

I have worked out a formula for grooving rollers to a detemined depth, in order to ensure flatness at the top of the strings.

It doesn't matter what diameter the rollers are, so long as they are all the same.

The following formula assumes a vee angle of 60 degrees.

The lathe tool must come to a sharp point, because, as soon as it starts touching the roller, that is the reference point for the groove depth.

DEPTH OF GROOVE = STRING DIAMETER X 1.5

The width of the finished groove will be: STRING DIAMETER x 1.7322

[Eldon]

Thanks Burt, I'll have a close look at that.

[Bent]

Great stuff Richard! I'll compare that one to what my engineer buddy worked out. You two are likely very close.