Original Posted By: Mark Blackwell
Subject: Pietenpol-List: Some aerodynamic stuffPieters,As I build my engine mount jig some little questions have popped into this ole brain. I remember from a long time ago, maybe flight school or somewhere, that the downthrust angle on the engine is to force a more direct blast on thelower surface of the wing.(High, single wing).Now as I plan to extend the mount a full 2 inches forward of the plans and lengthen the cabanes another 2 inches over the plans.It would seem to me that it would be necessary to drop the engine incidence to compensate for these changes.Now those of you in the know please advise. I'm laying out the jig for a 4 degree downthrust measured from the firewall and a wing incidence of 1 degree 30'.Sure would appreciate some help on this one. I promise to leave the list alone for the future.Corky in La nursing Isabelle with a strep throat________________________________________________________________________________Date: Thu, 10 Mar 2005 23:31:59 -0500