GU rubber length

[Doug Moore]

I'm replacing the rubber on my SOG's and full size wingers and need a measurement for the SOG. I measured the originals and cut the Theraband silver to the same length however they will not launch . Take the pressure off and the servo actuates but with the tubing attached nothing. Only thing I can come up with is I cut the tubing too short and there is too much tension. I did the same with all the full size and they work fine.

[copterdoc]

I agree with your theory!

Measure the tension, with a spring scale and compare it to the original tubing. Adjust the length of the new tubing, to get the same tension.

It is important to figure out the ratio of inches-to-LB, when stretching the tubing. Heavier tubing will "stack-up" quicker and gain more tension with less inches of stretch.

[BrettG]

Try leaving it cocked for a period of time. They will stretch out, I had a buddy do the same thing and after they stretched out a little it began to shoot.

[Doug Moore]

Try leaving it cocked for a period of time. They will stretch out, I had a buddy do the same thing and after they stretched out a little it began to shoot.

Patience is not my virtue. I've already cut them loose and was going to re-string them in the A.M. Thanks

[Ken Bora]

Try leaving it cocked for a period of time. They will stretch out, I had a buddy do the same thing and after they stretched out a little it began to shoot.

If you leave it cocked without firing for longer than four hours you are advised to seek medical help

[Mike Tome]

If you leave it cocked without firing for longer than four hours you are advised to seek medical help

LOL... now that's funny Ken!!