At 05:13 PM 4/16/2007, you wrote: >Well, I have had some concerns ever since a friend was killed in a Roll over >forced landing in a Corby Starlet. >So over the pass few days I made a 4130 R/O/Bar similar from RV >Phil Matheson ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I too had concerns of roll over protection. That's why I went the fixed windshield route. I formed the windshield bow and turtledeck bows using 5 layers of 1/8" ply with a layer of glass between each layer. The bows are approx 3/4" thick and attach directly to the top longerons. The turtledeck bow is located nearly over the rear spar with the additional vertical braces. The photo at: http://mysite.verizon.net/flesner/grin.jpg gives a general idea of the thickness of the two bows. I hope I never have to test this totally UN-ENGINEERED structure. Larry Flesner