Thanks John, I have sent them an E-mail and I am concerned about lowering it 5" because a motor mount diagonal may interfere. The thrust line relative to the tail fethers is to an exxtent importent but do not know how importent and mods to the cowl & Fwd. deck would have to be made and I am not locked into those yet either. I do not have an objection to the wood prop per SE other than if you get caught in the rain but having it adjustable would be nice to optimize things but composite props are a No-No for DD GPAS engines
Don -------------------------------------------------------------------------------- ----- Original Message ----- From: "Martindale Family" <johnja...@optusnet.com.au> To: "KRnet" <kr...@mylist.net> Sent: Friday, February 16, 2007 9:38 PM Subject: Re: KR> Raising the Thrust line 5 Inches > Say Randy, what engine were you using with your Warp Drive when you went > cruising along the ravine and what was the density altitude? At sea level > with my prop set to a fine pitch (say 12 degrees at the tip) I can easily > achieve 1100fpm climb at 75 knots (best rate). Different matter at high > DAlt. of course. > > Sorry Don, I cannot answer your question about the impact on aerodynamics of > a 5" raised thrust line. All I know is the basics about the couple between > the four forces resulting in a pitch down at the stall. I guess you would > want to preserve that characteristic and so I suspect you might need to > lower the mount. Great Plains should be able to provide advice as I'm sure > they've dealt with a lot of KRs over the years since they developed the VW > derivative.
