Jon Dawson wrote: > What is the nominal height (from top of your rear spar to the top of > your turtledeck/canopy?) and how tall can this measurement be before one > should extend the height of the rudder (to avoid de-stabilization > issues).
The inside of my canopy is about 17.4" above the longerons at my head location (sorry, I haven't measured it from the spar, and I'd forget to measure next time I'm out there anyway). I'm only 5'-10" since I had a little back surgery and got shortened, and I fit perfectly with somewhat tall Lightspeed headsets, but could stand an inch of freeplay. The bottom of my seat is still an inch off the floor, so there's an inch to be gained there, but I'd say if you are taller than 5-10, you need it higher than 17.5" above the longerons for sure. Larry Flesner has gobs of head room and he's a tall guy, so maybe he'll chime in with his. But the bottom line is you need to make sure YOU'LL fit, at a very minimum! I have three more inches of vertical stab / rudder than the S plans call for, and I've been considering hacking all three of them off, because I've yet to need full rudder for anything other than drag-producing slips on final, but then I haven't made that trip out west either... Mark Langford, 310 KR hours and counting see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net --------------------------------------------------------------