Netters, Just remember if you desire to make a long run of the pushtube as I did, you have to increase the diameter of the tube relative to the length. In other words the longer the bigger. I believe Dana in his RV has one that is thin wall 1 1/2" T6 aluminum, to go a distance of some 6-7' . My friend Bill who has a Thorp T-18 has almost the same length run and uses the same diameter. He is a mechanical engineer and told me that runs over 4 feet have to be twice as strong in compression (the pushing part) as it does shorter than that. My tube is 1" thick walled T6, with an interior piece of 5/8" that was the original tube before I found out about the compression issue. Dana has a list of parts he used to assemble his and I am sure if you write him he would send you a copy of that list. I prefer the pushtube for the elevator control, because there is alot more solid feel to it, and that is re-assuring to me, considering that I can make up for the failure of one of either of the other controls, but pitch is next to impossible to have a back-up plan for unless your KR is equipped with elevator trim. That is also a future project and one that all netters may want to consider, is the ability to make up for elevator control cable failure, by using the trim to make an emergency landing. Just some thoughts.....
Oh, and I do use spellchecker and a southern drawl translator! Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com or crbrn9...@hotmail.com http://kr-builder.org/Colin/index.html
