---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sat 05/26/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:33 AM - Re: propeller optimization (dmac11@telus.net) 2. 09:44 AM - Re: propeller optimization (Dwayne) ________________________________ Message 1 _____________________________________ Time: 09:33:01 AM PST US From: dmac11@telus.net Subject: RE: Europa-List: propeller optimization Hello Jerry, Perhaps you are right. The blades on my air master 308 are from lockwood and were warp drive blades that were installed in the airmaster hub. Are they different from the blades supplied from airmaster? Perhaps all the blades supplied by airmaster have the "constant speed blade planform" I don't know. It is a $55 per blade option. Rotec in vernon has told me there is no probem using the 912 gears on the 914, my question was is it really worth any performace advantage? It would be interesting to know that before changing gears of course. Did you remove your engine from the plane and take it to Vernon or just the gear drive? I would like to see a photo of your plane if you have one handy,is the panel all electric or has it a vac pump? Mine is all electric. It was a nice surprise meeting you, because I knew of your name from the internet. Are you up and flying now? me to much work going on but come july and august will be free. Have a great day, Dwayne Quoting Jerry Rehn : > Dwayne > > > > I would talk to the folks at Airmaster; they did extensive testing for their > prop using the Europa as the test platform! They seem like pretty smart > folks and worked with Warp Drive during the development. The Mono wheel may > have some blade length compromises due to the ground clearance but I don't > know. I don't think Rotax would recommend switching gears around between 912 > and 914. I sure like my Airmaster, its worked great for 6 years. > > > > Jerry > > > > _____ > > From: owner-europa-list-server@matronics.com > [mailto:owner-europa-list-server@matronics.com] On Behalf Of Dwayne > McAllister > Sent: Friday, May 25, 2007 11:32 AM > To: Europa-List@matronics.com > Subject: Europa-List: propeller optimization > > > > I spoke with a gent at Warp Drive who explained that with the short blade's > used on the europa, the blade pitch angle needed for higher speeds can be > greater than optimal causing turbulance near the tips. > > He told me they can modify the blade near the tips to alleviate this problem > and pick up 5 or 10 kts. He also said it would be better for the europa if > one used the 912 gear ratio (2.27:1) rather than the 914( 2.43:1). > > Has anyone tried the constantspeed blade planeform from Warp Drive? or used > the 912 gear ratio on the 914? if so was performance improved? > > Dwayne McAllister > > dmac11(at)telus.net > > > > > ________________________________ Message 2 _____________________________________ Time: 09:44:20 AM PST US Subject: Re: Europa-List: propeller optimization From: "Dwayne" Thanks Jerry, I'll take your advice. Rotax in Canada have told me there is no problem to use the 912 gears on the 914 but while the man at warp drive said performance would be improved, how much was my question. Visit - www.EuropaOwners.org ------------------------------------------------------------------------------------- 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.