View Full Version : Speedmaster strut

12-21-2010, 12:30 PM
If anyone can help me:

1. I need to know the inside diameter of the Speedmaster 20 and 21 strut
so I can choose the right diameter brass tube that will have a tight fit on the strut.

In the shop the recommendation is to use the following sizes:
7/32" brass for Octura .130 + Teflon tubing
1/4" brass for Octura .150 + Teflon tubing

The thing is that is not possible to fit two different sizes of brass tubing in the same strut (at least without getting a gap between the brass tubing and strut).

The setup will be installed in a rigger.

2. It would be also helpful if someone could give me the dimensions A,B and C on the picture - for both struts 20 and 21 (hydro version).

3. I plan to use a .150" + Teflon tubing or a .078" wire drive if I can get
the right size/combination of Teflon tubing. On some struts that are not
available anymore I was able to use the .078" (2mm) wire drive with a
4mm OD/3.1mm ID brass tube that was lined with a 3mm OD/2.6mm Teflon tubing - a perfect fit for the 2 mm wire drive.

Any info on the Octura Flex Hex 5mm to to .078" Motor Couplers ?
Do they grab the wire enough or is it better to use simple couplers
with set screws.


http://www.shrani.si/t/3e/UA/UD3J6H1/strut.jpg (http://www.shrani.si/?3e/UA/UD3J6H1/strut.jpg)

12-21-2010, 10:08 PM
You need to get in touch with Jeff Wohlt (he is on here)...he is the "Wire Man"and will get you all set up!