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Rotary it is then...


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I feel like I should look around as a person does when he enters a new house...


I hope everyone remembers to use the new address when referring to old posts and articles, because they certainly don't work now...

But that's not what I came to say..

I am now planted squarely in the rotary-engine-for-my-Cozy camp.

I remembered my older brother had built up a few RX-7s and had amassed a good deal of usable info and technical goodies over the years and has the procedures for building up engines.

So I got me a good core and I will start the rebuild when I get back from Ohio (2nd week in Jan) while Im waiting for stuff from AC Spruce..

I plan to use a moderate street porting, EFI and turbo (for noise reduction mainly and high alt boost) fabricate my own intake and exhaust manifolds and the rest of the stuff. I want to use Tracey's newest PSRU (C model) but I will have to wait for that anyway.

I am going to collect as much data on intercoolers, engine coolant and oil cooling as possible. I may try to get a big Vortec cooler and pump cool air into the system and use cowl flaps for take off, but that's for now..

Any thoughts?

I am pretty excited about going rotary, I turned down a very good deal on an I0-470 when I got the weight specs. I guess it would have not been so great on an aft-cg sensitive airframe.

anyway, even so it was pretty anti-climactic after hearing about Burt's latest adventure!




back to work....

Back to building... #618 Cozy MK IV


My Cozy web pages, courtesy: Rick Maddy... :cool: WN9G :rolleyes:

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Yeah, you guessed it..

The test of the space probe deal. I'll never see the altitude it went and Im not sure I want to, but I think it's pretty cool the same guy that designed the airplane Im building did all that and more. It was more or less a blurb at the end of my exposition.

But the aft cg sensitive part was referring to the canard design in general. To put a 430 lb+ engine in the airframe would load up the gross and cause me to have to put counterweights etc in the front. I would prefer it to be "under powered" and lighter than optimally designed with the most powerful a/c engine available in the proper weight class, than boasting a pudgy 250 HP and 14+ gph on a much heavier engine.

But that's just me, the only thing I've flown with a rear engine is a Skymaster, and it always had the engine in front going while I was flying it (I like it that way) So, in any case this will be a new experience for me. I just don't want to push the envelope my first time out...

Does that explain anything???


Back to work...



Back to building... #618 Cozy MK IV


My Cozy web pages, courtesy: Rick Maddy... :cool: WN9G :rolleyes:

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Welcome to the Wanklers club!:D


Sounds like you have a plan going. One thing - using a turbo you wont need an exhaust manifold beyond the small stock one that connects the turbo to the ports. From there it's a straight shot out the back into the prop :eek:


Feel to "pop over" sometime and pick my brains. Slim pickins, but I'll buy the beer.

I can be reached on the "other" forum http://canardaviationforum.dmt.net

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