cjensen
Well Known Member
I read a bunch of stats on the weight comparison of the traditionally powered -7's and that alternative powered -7's. Most of the alternative's are on the heavy side (from what's printed and available for us to see). I talked to a guy today (name withheld because I didn't ask him to use it) who has an RV-7 with an Eggenfellner H-6 with the first generation redrive, and his empty weight is 1115#'s. I think that's pretty darn good! Now, he didn't go crazy with the panel, and the interior is not plush, but that's a VERY comparable weight!
A data point for speed and fuel burn...
He runs the engine rpm at 3900-4000 (1.82 ratio) right now because his prop has yet to be balanced (IVO Magnum). It's smoother than any other prop he's flown, but not quite smooth enough for him. At that setting, he is truing at 175mph, burning 6.7gph. He is somewhat limited with that redrive, but when the prop is balanced next week, he expects to run the prop/engine rpm a little higher, and be able to cruise at 190mph easily. He's at 140 hours with zero squawks, no added oil, no leaks, and nothing but grins.
A data point for speed and fuel burn...
He runs the engine rpm at 3900-4000 (1.82 ratio) right now because his prop has yet to be balanced (IVO Magnum). It's smoother than any other prop he's flown, but not quite smooth enough for him. At that setting, he is truing at 175mph, burning 6.7gph. He is somewhat limited with that redrive, but when the prop is balanced next week, he expects to run the prop/engine rpm a little higher, and be able to cruise at 190mph easily. He's at 140 hours with zero squawks, no added oil, no leaks, and nothing but grins.