---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 11/15/09: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:19 AM - Re: Re: does rotax need egt? (Kingsley Hurst) 2. 02:35 AM - NL and PH-DIY (David Corbett) 3. 03:24 AM - Re: Re: does rotax need egt? (Duncan & Ami McFadyean) 4. 03:45 AM - Re: NL and PH-DIY (Frans Veldman) 5. 04:06 AM - efficient flying (Graham Singleton) 6. 08:11 PM - Picturers (Fergus Kyle) ________________________________ Message 1 _____________________________________ Time: 01:19:42 AM PST US From: "Kingsley Hurst" Subject: Re: Europa-List: Re: does rotax need egt? > At 2000ft 100 kts TAS 12 litres/hr . . . . . . At 10,000ft 150 " > " 21 " Hello David, Thank you for the extra food for thought. As I say, I'm only an observer in all this but I enjoy trying to understand what is going on and some accurate figures are interesting to compare. As a further point of interest, do you have the MP settings and RPM for each of the figures quoted? Cheers Kingsley ________________________________ Message 2 _____________________________________ Time: 02:35:56 AM PST US Subject: Europa-List: NL and PH-DIY From: "David Corbett" Hello, Frans, Thank you for your detailed reply re Mode S and ELT in your country. Thank you also for the wonderful picture commentary that your wife Ilona has put onto the privatepilots.nl website - absolutely brilliant! Best of luck with the test flying, when you get that under way; where will you keep your aircraft? David G-BZAM - and Flying Farmers Association(!) ________________________________ Message 3 _____________________________________ Time: 03:24:06 AM PST US From: "Duncan & Ami McFadyean" Subject: Re: Europa-List: Re: does rotax need egt? By way of comparison for a normally aspirated engine (912S), in a full power climb from 2000' to 6650' (at OAT +5C @ 2000' and QNH 1005), fuel flow dropped from 4.0 to 3.7 imp.GPH. I've not worked out the percentage power loss due to air density, but would guess that this was more than the % drop in fuel flow. Engine speed was a constant 4800rpm throughout. No EGT data available, which would have shown any richening of the mixture with altitude (as I recall, EGT does usually get less with altitude on this engine, but not greatly). Duncan McF. ----- Original Message ----- From: "Kingsley Hurst" Sent: Saturday, November 14, 2009 10:35 AM Subject: Re: Europa-List: Re: does rotax need egt? > > > >> Attachments: >> >> http://forums.matronics.com//files/rotax_efficiency_125.pdf > > Hello Ira, > > Thank you for posting those figures . . . interesting indeed. 60% > increase > in fuel consumption flying at 9,000 ft as opposed to 3,000ft while TAS > increases 33%. > > I note the increase in fuel consumption is almost linear from 3K to 7K ft > while the increase between 7K and 9K is double that between 5K & 7K. I > imagine 22.6" MP at 9K would be wide open throttle so I'm wondering if > this > kick in the consumption is because of power jets coming into play. > Regardless, there is nothing that can be done about it with things as they > are so I can certainly understand your desire to install a mixture > control. > I look forward to hearing how you accomplish this. > > Sorry I am unable to supply any comparative data yet. > > BTW, your MPG figures appear to actually be NMPG so your actual MPG is > still > way ahead of any motor vehicle travelling at 146 MPH. Realizing that may > make you feel better No? > > Somewhere I saw once that Rotax actually do have true altitude > compensating > carburettors but for the life of me I cannot recall where I saw that. > > Cheers > Kingsley > > > ________________________________ Message 4 _____________________________________ Time: 03:45:46 AM PST US From: Frans Veldman Subject: Re: Europa-List: NL and PH-DIY David Corbett wrote: > Best of luck with the test flying, when you get that under way; where > will you keep your aircraft? I will keep it at home, taking full use of the trailering ability of the Europa, if that is what you wanted to know. If you mean what my "home" airfield will be, well, it depends, again due to the trailering ability of the Europa. There are two airports nearby: EHHO, a friendly grass strip, but it has a tendency to turn into a swamp during the wet season, and it has very restrictive opening times 10:00-19:00. (yep, another thing we have is that any airfield needs to have a manned tower, even if it is a grass strip, and if it is "closed", using it is a serious violation.) Then we have EHGG nearby, a paved class-C airport. Apart from the obvious advantanges, it is quite expensive. A landing is the equivalent of enough fuel for at least one hour flying. So, our policy will be that when we are getting out to fly, with the Europa on its trailer behind the car, we will choose between these two airports, depending on conditions and intentions. Most of the time this will be EHHO. Thanks, Frans ________________________________ Message 5 _____________________________________ Time: 04:06:22 AM PST US From: Graham Singleton Subject: Europa-List: efficient flying Extending the chat about EGT and fuel consumption this is an interesting podcast from one of my heros Klaus Savier. Klaus achieved 48 US mpg at 207 mph recently in the Cafe competition. This should be achievable with a Europa Motorglider and a Rotax. Except perhaps that speed is measured block to block. Klaus has a Vari Eze with an O-200. I have one of his ignition units on my Long EZ. (yet to fly again) Graham http://tinyurl.com/ygqj6zm http://www.avweb.com/podcast/podcast/AudioPodcast_KlausSavier_Fuelventure400_Winner_201522-1.html?kw=AVwebAudio ________________________________ Message 6 _____________________________________ Time: 08:11:58 PM PST US From: "Fergus Kyle" Subject: Europa-List: Picturers I am embarrassed to admit this but I have not yet mastered acquiring pictures via the list (nor I guess sending same). As a respect for list patience, could someone contract to send me the method directly? Thanks, I guess that means warning others you've done it to discourage repeaters. Ferg VE3LVO@rac.ca PS: don't use Reply. I'm on a new computer and somehow the return address has a "0" in it instead of a "O", so you get a refusal. (That's also why I send in capitals to avoid a "31" instead of a "3L" Some fonts don't differentiate. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.