You need about 4" on each for them to spin up properly, better to have 5 or even 6. Sometimes it may be advantageous to have 2 small ones, one for each gauge.
Al DeMarzo Visit the Ercoupe Swap Page Free, Easy and No Membership Required http://www.ercoupeowners.com/swap/swapbook.htm ----- Original Message ----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] ; [email protected] Sent: Monday, January 14, 2008 10:17 PM Subject: Re: [ercoupe-tech] Venturies for Vacuum gauges In a message dated 1/14/2008 10:30:28 PM Eastern Standard Time, [EMAIL PROTECTED] writes: Before I send my attitude indicator in for a re-build, I'd like to figure out what the problem might be. Randy, Quite a while ago I bought a DG and an Attitude Indicator out of a salvaged airplane and wanted to see if they were any good or not. I took them to a local avionics shop and talked a tech into hooking them up to a vacuum source and checking to see if they worked, with the understanding that he wasn't going to do any paperwork on them, and that they weren't going to be installed in anything. Cost was zero if I remember correctly. Maybe you can find a similar deal? Best Regards, Wayne DelRossi Alon N5618F Hours logged since restoration: 352.5 "Nobody has ever scientifically proven that life is supposed to be serious." ------------------------------------------------------------------------------ Start the year off right. Easy ways to stay in shape in the new year.
