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Best Engine for RV-4 Great Planes

Old 05-14-2003, 09:38 PM
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Bonanza_Pilot
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Default Best Engine for RV-4 Great Planes

What is the best engine to put on an RV-4 .40?

FOUR STROKE or TWO STROKE?

Thanks, Carlos
Old 05-15-2003, 11:48 AM
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tailskid
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Default Best Engine for RV-4 Great Planes

I'm using a .52 four stroker on mine and love it.....

Jerry
Old 05-15-2003, 03:47 PM
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Bonanza_Pilot
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Default Best Engine for RV-4 Great Planes

Jerry:

Is your RV-4 slow with that engine?

Thanks, Carlos
Old 05-15-2003, 04:13 PM
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tailskid
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Default Best Engine for RV-4 Great Planes

It is very scale-like and quiet. With a 2-stroker I'm sure it would be more aerobatic, but I love the way it flys - very SOLID and smooth-like.

At full throttle, it can get up and go at a respectable speed....but I'm sure a .40 sized Stik would pass it in the homestrech!
Old 05-15-2003, 10:57 PM
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Default Best Engine for RV-4 Great Planes

I would put an OS 70 surpass II on it. I was going to build this airplane and have the afformentioned engine. I decided on the Great planes ultimate instead. If you want the scale sound throw an exhaust diverter on the muffler, or go with the pitts muffler set up. The 70 will give you plenty of power, and will also give you a nice scale sound. Thats my 2 cents

JB

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Old 05-16-2003, 10:18 PM
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Default Best Engine for RV-4 Great Planes

Always a 4 banger for scale. [img]i/expressions/face-icon-small-happy.gif[/img]

My buddy had an MDS 48 with pits mufler on his. Flew fine..
Old 08-05-2005, 10:32 AM
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jtsails
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Default RE: Best Engine for RV-4 Great Planes

Jerry,
What prop do you use with that combo?
Old 08-06-2005, 02:45 PM
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Default RE: Best Engine for RV-4 Great Planes

Always a 4 banger for scale.
I'm unaware of a 4 cylinder that'll fit the RV-4.

I'm flying mine with a Magnum .46 XL 2 stroke, with pitts muffler. It's great.

Phil
Old 08-07-2005, 06:38 AM
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Default RE: Best Engine for RV-4 Great Planes

I use a TT 46 pro in mine, perfect combo IMO.
Old 08-07-2005, 06:53 AM
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Default RE: Best Engine for RV-4 Great Planes

HI! I have a plane similar than your rv4 (Super Sporster) size 40 and I have a 70 surpass in mine this (IMO)
is a great combo w unlimited vertical , nice put put put sound, the 52 4 strokes is a little weak for this plane
but if you want to fly it scale its a good choice.............

Old 08-07-2005, 07:08 AM
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RVator
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Default RE: Best Engine for RV-4 Great Planes

If I ever build one I want to use a YS-63 or a Saito .82. I think the Saito would be good because it is lighter and stronger than a .70 Surpass.
Old 08-07-2005, 07:30 AM
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Default RE: Best Engine for RV-4 Great Planes

Saito 82 is much strong than 70 surpass but he dont need more power IMO, the little OS 70 Surpass can easily give to him unlimited vertical with a 5 lbs plane

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