Looking for a 4-stroke for similar performance to a K&B - RCCanada - Canada Radio Controlled Hobby Forum
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Old 10-27-2006, 03:52 AM   #1
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Looking for a 4-stroke for similar performance to a K&B

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I'm looking for an engine for my Gee Bee that will give me similar performance as the old K&B 40. I don't want ridiculous power or anything like that, just similar or a touch more.

I haven't done any 4-stroke stuff yet, but I want a nicer sound for this plane. I might be able to pick up a new Enya .46, or a used OS FS40. Any idea how they would compare?

Got any other suggestions?
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Old 10-27-2006, 06:07 AM   #2
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Several things; you would need a four stroke about 1.5 times the displacement, and any four stroke is heavier than a two stroke (more parts).

You'll also need a different prop (lower speed, higher torque).

I'd have to agree, nice sound, nice smooth power.
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Old 10-27-2006, 08:33 AM   #3
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Saito 56

The Saito 56 would be my choice for that plane. its light (for a 4 stroke) and delivers about the same performance.

Salutations from the Pacific North WET!

S.P.A.D.s, Fibreglas & Balsa EDF's, Foamies, Brushless powered and nitro balsa planes, they're all in my hanger, just don't explain what it all means to the mrs, eh?
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Old 10-27-2006, 01:28 PM   #4
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I have used Enya 46's in several 40 sized planes. Will be fine with a 12x6 for thrust or 11x7 for speed. They are powerfull little engines with omega 15%. Be sure your prop is good and tight. Use something more than a x wrench.
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