---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Tue 02/21/06: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:09 AM - Re: rpm (David X) 2. 01:35 PM - Re: Re: rpm (Duncan McFadyean) 3. 05:41 PM - Re: rpm (David X) ________________________________ Message 1 _____________________________________ Time: 07:09:23 AM PST US Subject: RotaxEngines-List: Re: rpm From: "David X" --> RotaxEngines-List message posted by: "David X" 5150 is where it seems to like it. The operators manual concurs. -------- Zodiac 601 XL - CZAW Built - Rotax 912S DO NOT ARCHIVE Read this topic online here: http://forums.matronics.com/viewtopic.php?p=13773#13773 ________________________________ Message 2 _____________________________________ Time: 01:35:35 PM PST US From: "Duncan McFadyean" Subject: Re: RotaxEngines-List: Re: rpm --> RotaxEngines-List message posted by: "Duncan McFadyean" David, Where specifically does it say that? I can't find that in owner's, installation or maintenance manuals. Duncan Mcf. ----- Original Message ----- From: "David X" Sent: Tuesday, February 21, 2006 3:08 PM Subject: RotaxEngines-List: Re: rpm > --> RotaxEngines-List message posted by: "David X" > > 5150 is where it seems to like it. The operators manual concurs. > > -------- > Zodiac 601 XL - CZAW Built - Rotax 912S > DO NOT ARCHIVE > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=13773#13773 > > > ________________________________ Message 3 _____________________________________ Time: 05:41:23 PM PST US Subject: RotaxEngines-List: Re: rpm From: "David X" --> RotaxEngines-List message posted by: "David X" Look in Chapter 10 - Operating instructions. I have revision 3, July 01/2004. Look specifically at page 10-7 and 10-8 at the power curves and engine power settings table. Max cruise power = 5500 75% power = 5000 The above figures are probably based on a standard day. Power decreases with altitude or decrease in density altitude, so it would make sense that you would increase RPM a little at altitude to maintain the same sea-level power. Also, the power curve reveals that maximum torque is at about 5150 RPM, which is the happy medium between power and economy. At some point, you begin to split hairs. -------- Zodiac 601 XL - CZAW Built - Rotax 912S DO NOT ARCHIVE Read this topic online here: http://forums.matronics.com/viewtopic.php?p=13942#13942