My Really BIG Engine

[ddurakovich]

Originally Posted by Yukon

LOP is alive and well in my new radial conversion. Under normal conditions, the R-2800 burns about 100 gph in cruise, but with GAMI injectors and careful leaning, Walter and I have gotten fuel flows down to about 6 1/2 gph.

I'm sorry, this is just too funny!!!!!

[jsherblon]

Can it run a wood fixed pitch prop? I have a big oak tree in my yard....

[Yukon]

Glad you brought this up. Because of the high installed weight of our R-2800
engine package, it will not be possible to install metal propellers. Carving your own custom oak prop is a good option, and we highly encourage you to do so. Even though you probably know nothing about propeller design and construction, don't be deterred, as this is "EXPERIMENTAL AVIATION".

If you will send us your 50% deposit immediately, we will give you a free Ronco Stainless Steel wood carving kit for trying our product. Send your
check today and we will guarantee a December 2006 delivery.

[jcoloccia]

Actually, I think you guys are way off base with the whole big engine thing. I initially had this idea when I was looking at building a Bearhawk, but I think it applies....

A little Cox .049 engine weighs about 2 1/4oz and puts out about 1hp at 24,000 RPM. You can pick these things up, with fixed pitch prop, for about $50 bucks...maybe $30 with volume discounting. If I put 300 of these on the front, I'd have *300HP* yanking my RV-7 through the air for $9000, and it'd only weigh 42lbs. I could even lose a few and still be kicking some serious butt.

The only problem at the moment is range. I figure once around the baseball field...

[Yukon]

I think you are on to something!

[Jekyll]

Originally Posted by jcoloccia

Actually, I think you guys are way off base with the whole big engine thing. I initially had this idea when I was looking at building a Bearhawk, but I think it applies....

A little Cox .049 engine weighs about 2 1/4oz and puts out about 1hp at 24,000 RPM. You can pick these things up, with fixed pitch prop, for about $50 bucks...maybe $30 with volume discounting. If I put 300 of these on the front, I'd have *300HP* yanking my RV-7 through the air for $9000, and it'd only weigh 42lbs. I could even lose a few and still be kicking some serious butt.

The only problem at the moment is range. I figure once around the baseball field...

However, the fuel costs about 5 times AVGAS and these little suckers pass copius quantities through the ports without burning it. I don't think GAMI makes an injector for a Cox .049 so you won't get the combined burn rate under 7 GPH, it will probably be about 50 GPH at about $20 a gallon for a fuel cost of $1000 per hour. So, after flying about 16 hours, you will be on the red side of a Lyclone.

And think of all that castor oil gumming up your beautiful RV!

Jekyll

[Yukon]

Originally Posted by Jekyll

However, the fuel costs about 5 times AVGAS and these little suckers pass copius quantities through the ports without burning it. I don't think GAMI makes an injector for a Cox .049 so you won't get the combined burn rate under 7 GPH, it will probably be about 50 GPH at about $20 a gallon for a fuel cost of $1000 per hour. So, after flying about 16 hours, you will be on the red side of a Lyclone.

And think of all that castor oil gumming up your beautiful RV!

Jekyll

Yea, but think about how smooth it will be!

[cjensen]

This thread should go in the classics!! Hilarious!

[jsherblon]

I don't think I'll need the Ronco carving tools. I have a genuine Swiss Army knife on my keychain.

I don't think that engine includes an alternator. Here's an idea to power the electrical system Alternate Alternator

[Yukon]

Good idea, but we'll need two, because our engine is all-electric and must
have a reliable source of DC power. Redundancy is the name of the game here in the alternative engine business.