No. It is roughly 90 degrees past TDC. The cylinder number is not relevant as this condition occurs every 180 degrees of crankshaft rotation.
John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices.net _____ From: Albert Flora [mailto:[EMAIL PROTECTED] Sent: Thursday, April 10, 2008 7:43 PM To: John Cooper Cc: ercoupe-tech Subject: Re: [ercoupe-tech] Re: Vibration question John, When the blades are set at roughly 10:30 and 4:40 as veiwed in front of the plane, is the engine at cyl #1 top dead center about to fire or at some other position? Al Flora N94748 (HYR) ----- Original Message ----- From: John <mailto:[EMAIL PROTECTED]> Cooper To: [email protected] Sent: Thursday, April 10, 2008 4:35 PM Subject: RE: [ercoupe-tech] Re: Vibration question >> I'm in favor of remounting the prop so that it is approx. the 2 O' clock position as viewed from the cockpit. Good point. If the prop is mounted incorrectly the power pulses will beat on the side of the fuselage. When the engine stops between compression strokes the blades should be roughly 10:30 and 4:30 as viewed from in front of the plane. John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices.net
