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CHAPTER 23 Lots going on in this chapter - so I've broken it down into several sections: Building the Cowlings (I am making my own versus buying a Lycoming shaped cowling)
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Stay tuned. I'm working on it right now! - Engine mounted to firewall (at least temporarily) and the lower cowl is done. | |
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Since I'm going to use a Rotary Engine (Mazda 13B) I needed a mount suited for that purpose. Instead of trying to invent one - I was fortunate to find Conversion Concepts. They have experience making mounts for "alternative" aircraft engines. | |
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I took the "fake firewall" that we all used when putting the fuselage together and mounted it on a rolling frame. This makes it easy to maneuver around the garage and to figure out placement of items on and around the engine. | |
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I decided on using Atkins Rotary as my engine supplier. I was going to go the route of rebuilding it myself - but that's not my area of expertise and I want more peace of mind - hence a professional rebuilder. He also makes the modifications "needed" or at least desired by most aircraft builders. | |
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My "engine lift" - made out of a couple of 2x6's bolted to the rolling frame described above. Then I have "come-along" cable lift that is attached to a couple of 2x4's notched into the braces above. It sure beats trying to muscle a 200 pound engine around!! | |
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The Muffler
Design:  | ||
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I purchased the inconel 625 steel pieces needed for my muffler system and with the help of a good friend (Steve Foote) we (mostly he) managed to chew through some very nice holes. Here are all of the pieces (except I haven't cut the 2" and 3" tubes yet pending final fitting on the engine. | |
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Here is the preliminary mockup of the radiator plumbing. (NOTE: the plane is still upside-down here!!). You can also see the radiator fan. This little gem is from Flex-a-lite as was chosen because it move a lot of CFM (2,500/min) and only requires 2 5/8" clearance. The down side is that it draws 19.5 amps when running full-tilt. | |
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