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John Cooper wrote: > > The Ercoupe is > > such a neat plane it is ashame that a few people can tarnish its name. > > This guy may have intended to bash the Ercoupe, but the fact of the > matter > is that his ignorance is not type specific. The only way raising the > nose > can cause the CG to shift aft is if you've got a bowling ball in the > tail > cone. Something has to either move, fall out of, fall off of, or fall > into > the plane to change the CG. Ask him to demonstrate with CG calculations > how > this happens. Oh, and don't let him work on your plane! > > John There is a reason for his ignorance. A shade tree type A&P can erroniously deduce that the CG shifts aft when the aircraft is in a nose up attitude. Here's how it can happen: When weighing a tail dragger, there is more weight on the tail wheel when resting on the ground & less on the main gear. If you use these numbers the CG is definately aft. However, if you raise the tail and weigh the aircraft while in a level flight attitude, the weight is now evenly distributed and you get the true CG. Erronious deduction: CG shifts to the rear when aircraft is flying in a nose up attitude. So if a shade tree type mechanic once weighs an aircraft improperly, he will think that the CG shifts with flying attitude, and will happily spread this misinformation in order to demonstrate his knowledge. (Shady) Gordon Tanner Wilton, CA ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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