The plans call for using 8 inches - 16 inches of the wing cord. So forward point would be 8 inches aft of the wings front edge. Aft would be 16 inches. This is for the RAF 48 airfoil.
Rob Schmitt N1852Z > On Aug 15, 2015, at 7:11 AM, Flesner via KRnet <krnet at list.krnet.org> > wrote: > > >> . Can you guys give me the advice what you should use for the fwd and aft >> gravity point? I think I can use the drawing dimensions. Result will be more >> space after the engine. >> Stef > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Stef, > > You and your dad have done some fine work on your KR. > > Use the CG location established in the plans but don't use the rear two > inches of the CG. The CG is based on the wing plan form, not what is > attached to the wing. It is based on the center of lift for that wing shape. > Place your engine to keep you in the CG range with different loading > configurations. More forward is best. > > Larry Flesner > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
