Stringmaster Connecting Rods - D8 & Quad

[Tony Oresteen]

I need to know the length of the connecting rods for a D8 and a Quad Stringmaster.

I pulled the rods out of my 1978 T8 and here is how they measured:


Bridge Side Rod:
================

Length = 13.0"

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"



Nut Side Rod:
==============

Length = 12.375"

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"


My plan is to make a set of rods for the D2 & Quad Stringmasters.

Thanks!

[Tony Oresteen]

OK, lets get this information completed!

First, does anyone know if the connected rods for 22.5" scale Mk2 Stringmasters are the same lengths as the 24.5" scale Mk2 Stringmasters? i,e, D8, T8, & Q8. My guess is that they are as Leo wouldn't want to stock any more parts than he had to.

Secondly, what are the connecting rod sizes for the Mk 1 26" scale:

Double 8?

Triple 8?

Quad 8?

=====================================================

I can now add the rod sizes for a Mk 2 Quad 24.5" scale:


Bridge Side Rod:
================

Length = 17.5"

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"



Nut Side Rod:
==============

Length = 17.0""

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"


Thirdly, can someone who owns a Stringmaster Mk2 Double 8 24.5" scale pull the rods and measure them? I pulled the rods out on my T8 today with set up on it's legs to double check my previous measurements. I did one side at a time, total time was less than 15 minutes. Many thanks!


I failed to mention in my prior post that my previous data was for a 24.5" scale Mk2 T8:


Bridge Side Rod:
================

Length = 13.0"

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"



Nut Side Rod:
==============

Length = 12.375"

Diameter = 0.250" steel rod

Thread size ends: 1/4-20

Thread lengths outside end: 1.250"

Thread lengths inside end: 0.750"


I have found that the simplest way to make a connecting rod is to use 1/4"-20 threaded steel rod. A 36" long piece was $2.75 at Lowe's. I made 3 rods today in about 30 minutes.

Thanks all!

[George Piburn]

Tony,

In case you need them I have 3D printed little tubes that the rods go through with the little ridge between the necks, made to specs I got on the forum from a member who measured out the originals that were lathed from metal thick wall tubing.

[Tony Oresteen]

Tony,

In case you need them I have 3D printed little tubes that the rods go through with the little ridge between the necks, made to specs I got on the forum from a member who measured out the originals that were lathed from metal thick wall tubing.

That is great that you have done this for the Stringmaster community!! While I do not need any (I actually have 2 spares) I'd like to get a couple of them.

[George Piburn]

I've already sent you 6 of them today as a Gift.

Lettuce know if these can help you or other stringmaster projects.

Best Regards

GeorgeBoards

[Tony Oresteen]

George,

That is fantastic! Thank you so much. I really appreciate it!

[Tony Oresteen]

George,

That is fantastic! Thank you so much. I really appreciate it!