Lemans Posted April 19, 2009 Share Posted April 19, 2009 Hello, Is there someone who can provide me dimensions and or designs/plans concerning the engine bay of a Cozy MK IV. It very premature but I like to check if there’s enough room for a rather unusual power plant. ( no, not steam…) Regards Johan I tried to do some modeling on a PDF file but I think it’s not accurate enough Quote Link to comment Share on other sites More sharing options...
Phil Kriley Posted April 20, 2009 Share Posted April 20, 2009 You can build your cowling to fit your engine. There are Cozy's flying with jet engines. Can you give us a hint as to what you have in mind? It may have been done before. Quote Phil Kriley Cozy #1460 Chapter 13 - nose Right wing done - working on right winglet. Link to comment Share on other sites More sharing options...
Lemans Posted April 20, 2009 Author Share Posted April 20, 2009 I doubt it. As I like to use a future Cozy for cross country flights I want to fly as far as possible on a gallon of fuel. So, I choose a desired cruise speed and the existing charts on fuel consummation are indicating the necessary power needed for this speed. 1 gallon/hour is good for 10hp. The first engine will be around 50 hp. Impossible to take-off on that power so there will be a second one installed (+100hp) to work simultaneously with the first. IF there is enough room to install such a setup. Quote Link to comment Share on other sites More sharing options...
Kent Ashton Posted April 20, 2009 Share Posted April 20, 2009 I want to fly as far as possible on a gallon of fuel. Are you familiar with the Varieze? There are several very fine examples that have been optimized to burn about 3 gallons per hour. Google "Gary Herzler Varieze" or "Savier Varieze" I found some discussion here http://www.cleanmpg.com/forums/printthread.php?t=19389 If you insist on a Cozy IV, you'd would probably get closer to your goal with a fuel-injected, electronic-ignitioned O-320 rather than trying to use two engines. Quote -KentCozy IV N13AM-750 hrs, Long-EZ-85 hrs and sold Link to comment Share on other sites More sharing options...
Lemans Posted April 21, 2009 Author Share Posted April 21, 2009 Thanks Kent, interresting link. Like I said, it's very premature as I like to finish the hybrid for my Shadow first. The first "real world" parts are ready to be build. I expect a useable system at the end of this year. If you are interested, you can follow the whole discussion and progress here: http://www.bmaa.org/forums/default.aspx?f=45&m=40462 After verifying a lot of info on hybrid systems it came clear that a good specific consumption is reached only at full throttle (max power) on a petrol engine. It’s possible (and done before) to reduce the fuel burned to 0,2 liter/hp/hour, this makes approximately. 20hp on the gallon/hour. How fast is a VariEze going on 20 hp? Or 40 hp… If it can take-off on 80hp I expect it to stay in the air with 30 hp. Returning on the VariEze, Yesterday I took contact with someone who owns one. I asked him to copy some parts of his plans concerning the engine bay/fuselage. Johan Quote Link to comment Share on other sites More sharing options...
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