---------------------------------------------------------- Engines-List Digest Archive --- Total Messages Posted Wed 04/20/05:2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:46 AM - Engine speed (Fiveonepw@aol.com) 2. 12:25 PM - Re: Engine speed (Tracy Crook) ________________________________ Message 1 _____________________________________ Time: 11:46:43 AM PST US From: Fiveonepw@aol.com Subject: Engines-List: Engine speed --> Engines-List message posted by: Fiveonepw@aol.com I have an O-320 (E3D) with 1000 hours since new with new rings and bearings intalled at about 850 hours. With my prop, I can easily run 2800 rpms at lower altitudes and 2700 at 8000'. I know the redline is 2700, but curious how detrimental to run this engine at the higher speeds for a couple of hours, assuming fresh oil and general state of tune per specifications? Running dual Slick mags on stock engine. I know a higher prop pitch would be an option, but don't want to sacrifice present climb rate. Thanks- Mark - RV-6A do not archive ________________________________ Message 2 _____________________________________ Time: 12:25:10 PM PST US From: "Tracy Crook" Subject: Re: Engines-List: Engine speed Seal-Send-Time: Wed, 20 Apr 2005 15:21:37 -0400 --> Engines-List message posted by: "Tracy Crook" Just a matter of declining TBO. The airboat guys run them as much as 3300 RPM. At some point TBO shrinks to zero of course. 2800 is not that bad. I'd keep it rather than give up ROC. Tracy (running 5600 at cruise. Apples & Oranges naturally) --> Engines-List message posted by: Fiveonepw@aol.com I have an O-320 (E3D) with 1000 hours since new with new rings and bearings intalled at about 850 hours. With my prop, I can easily run 2800 rpms at lower altitudes and 2700 at 8000'. I know the redline is 2700, but curious how detrimental to run this engine at the higher speeds for a couple of hours, assuming fresh oil and general state of tune per specifications? Running dual Slick mags on stock engine. I know a higher prop pitch would be an option, but don't want to sacrifice present climb rate. Thanks- Mark - RV-6A do not archive