[Fletch1373]

Originally Posted by IKE

1. 1x1" square aluminum tubing and 1x1 box are the same thing in my language, though I can understand the confusion. These are aluminum extrusions and come often come in various thicknesses.

2. A tension sturt is a type of brace that primarily works in tension. It is often a piece that triangulates 2 perpendicular members. If it works purely in tension, it can be as light as a strong piece of string. Check out old wooden airplanes to see some very clever use of string. Often I will see such a member made out of thicker than necessary material. In fact, one of the teams competing in Elims at Troy District this year had a piece of 1/8" thick 1x1 angle they were using as a tension strut. They were a pound overweight, and replaced it with 1/16" during the lunch break before elims. This in my opinion is a great way to loose a pound.

wait... a pound over weight, but were allowed to play anyway and didn't fix it until right before elims....? who's the inspector that made that decision....?