---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Sun 03/25/12: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:39 PM - Re: Sun 'n' Fun? (richardcoo) ________________________________ Message 1 _____________________________________ Time: 12:39:06 PM PST US Subject: JabiruEngine-List: Re: Sun 'n' Fun? From: "richardcoo" There's a good deal of noise and interest re variable pitch or constant speed propeller options for the Jab' 3300. I'm considering a Lightning build myself over the southern hemisphere winter and spring months and this phase has caused me to spend more than a few hours researching options. From what I've researched, here's options so far: Ameri-Tech - "Whirl Wind" series (2 blade - no pricing offered) Airmaster - model AP420 (US$7,000) made in NZ MT Propeller - model MTV-1 (EU8,200), MTV-7 (EU9,700) Woodcomp - series SR3000, models 3B(EU5,145) and 3J (EU4,845) Pricing all ex-works and subject to currency fluctuation and individual quotations. All are electrically manipulated variants as best I can determine, and engage some form of controller in the instrument panel to control the propeller's angle of incidence to the free airstream ahead of the aircraft. There's still work to be done, as Jabiru in Bundaberg, QLD (Australia) appear to have little research into variable incidence or constant speed propellers. As such the safest route is to progress with the engine manufacturers recommendation, or an option with considerable time in service of the engine as the existing Lightning options have. That said, however and in the spirit of experimental aviation, there's basis in my opinion to consider a variable pitch or constant speed option. However caution and a well thought out strategy and testing plan as part of the aircraft's initial testing or in the case of a retrofit, separate testing is warranted to gather data, familiarise the pilot with operating techniques and demonstrate the acceptability or non-conformance of a propeller option. Maybe one of the manufacturers will get behind a well developed testing program to validate their variant on a Lightning? In summary, proceed with caution. Utilise the resources available to you in the form of DAR, engineering, expertise, additional research and safe flying. Kind Regards Read this topic online here: http://forums.matronics.com/viewtopic.php?p=369338#369338 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.