Pete- I don't know precisely what you want to discuss. Before we got our plane, it had a vertical compass and electrical turn coordinator installed by the previous owner. The TC works fine. The vertical compass seems to need to be swung, as it appears to be off somewhat - we'll get to that eventually. As for venturi driven gyros - if you have them, and they work, I'd leave good enough alone. A Vert. compass is NO replacement for a DG. A VC is better than the old fashioned compass, but it surely isn't a DG. Likewise with a turn coordinator. Roll info is presented, but no pitch info is displayed. An attitude indicator presents both roll and pitch info, and the TC should be only a backup instrument. Venturis are great - I've flown thousands of hours with them. They don't break like vacuum pumps, and unless you get into ice, they're foolproof. Naturally, the gyro instruments themselves can fail, regardless of the source of the vacuum to drive them. I would like to have gyro att. indicator in our plane, but we don't. I think this instrument is very helpful for nite flying, and in haze like we get here in Ohio. Jerry Eichenberger Columbus, Ohio N2906H
>>> "E. T. 'Pete' Petrie" <[EMAIL PROTECTED]> 02/10/99 01:49PM >>> Some time ago...when this list was in its infant stages...a discussion about vacuum systems took place. Specifically it had to do with removing the vacuum system...with the venturi(s)...and replacing directional gyro with, I think, a vertical card compass, and replacing artificial horizon with, I think, a turn & bank indicator, and what else??? If anyone has done this I would be interested in discussing it with you. Thanks! Pete, N3552H E. T. "Pete" Petrie, Lowes Chair Computer Science at Wilkes Community College Box 120, 1328 Collegiate Drive Wilkesboro, NC 28697 Phone: 336.838.6185 Fax: 336.838.6277 eMail: [EMAIL PROTECTED] ! !
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