---------------------------------------------------------- MurphyMoose-List Digest Archive --- Total Messages Posted Mon 11/17/08: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:54 AM - Re: Murphy Moose Prop (George Coy) ________________________________ Message 1 _____________________________________ Time: 04:54:29 AM PST US From: "George Coy" Subject: RE: MurphyMoose-List: Murphy Moose Prop The propeller options are as follows: 1. Russian two blade composite V-530 Not in Production but available overhauled and some new old stock. Prices about $5,000 for a good overhauled prop. Replacement modern blades are also available for the hubs. 2. MTV-9 German three blade composite prop. In production with several variations including reversing. Price in the range of $15,000 to $20,000 depending on options. 3. Hartzell aluminum prop. Price around $12,000. Requires different governor. Governor price ranges between $1400 and $2200. Spinner is additional $1500. Total price around $15,000. I personally did the flight testing for certification by Hartzell for the Hartzell propeller. They needed to be sure it was suitable for M14P engine. There are one or two other composite props that are available, but not in much use. They have not been proven in my estimation. There is no two blade aluminum prop that has been tested for the M14P engine. Remember that the relatively low RPM of the engine at full power (1950 RPM at the prop) requires a rather long bade to absorb the torque and translate it to thrust. At 60% power, the prop is only turning at 1170 RPM! The 3 blade propeller will give about 15% more thrust than a two blade prop with all other things being equal. It is a decided advantage on floats. The cowling clearance depends on the cowling. I think on Moose aircraft it is about 6 inches. George Coy Coy Aircraft Sales 714 Airport Rd. Swanton VT 05488 802-868-5633 off 802-363-5782 cell george.coy@gmail.com SKYPE george.coy -----Original Message----- From: owner-murphymoose-list-server@matronics.com [mailto:owner-murphymoose-list-server@matronics.com] On Behalf Of HBaker Sent: Sunday, November 16, 2008 4:48 PM Subject: MurphyMoose-List: Murphy Moose Prop --> I have no knowledge of the available propellers for a Murphy Moose with an M-14 engine. Some of the questions I have are: 1. Is there a 2-bladed aluminum prop available with Western fittings? 2. How does the performance compare between 2 & 3 blades on floats? 3. What is the clearance between the cowling and the propeller flange? -------- Currently building a Murphy Moose - any help would be appreciated. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=214583#214583 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message murphymoose-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/MurphyMoose-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/murphymoose-list Browse Digests http://www.matronics.com/digest/murphymoose-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.