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Thread: Raven Redrives Geo/Suzuki conversions

  1. #1

    Raven Redrives Geo/Suzuki conversions

    I have had my eye on the Raven Redrives Geo/Suzuki conversions for many years, but you don't seem to hear much about them. As I am most interested in smaller, lighter aircraft usually designed to take VW conversions, their Geo/Suzuki conversions are very appealing. Does anyone have any first-hand experience with the company or their products? Thanks, Matthew
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    Matthew Long, Editor
    cluttonfred.info
    A site for builders, owners and fans of Eric Clutton's FRED

    Voici ce que j'ai fait...vous pouvez en faire autant!
    "This is what I have done...you can do the same!"
    --Henri Mignet (1893-1965)

  2. #2
    Eric Witherspoon's Avatar
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    You could try the Yahoo group - flygeo. It's not exclusive to Raven because there is at least 1 other company doing PSRU's for Geo/Suzuki-based engines. I have seen that the Raven company has presented a forum at the Copperstate Fly-In the past 2 years. I wasn't interested 2 years ago, and last year, I just missed them. From what I can gather, they seem to be more used on trikes than more conventional aircraft. Not sure why.
    Murphy's 13th: Every solution breeds new problems...

    http://www.spoonworld.com

  3. #3
    DanH's Avatar
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    Jul 2011
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    Raven makes a solid, proven system for the 3-cyl. The friction damper in parallel with a soft element is quite clever.

    The engine itself has a balance oddity. It's an inline 3-cylinder without a balance shaft, so its block vibration is a pronounced wobble around its crank center. Imagine holding a pencil between thumb and forefinger, at the middle of the shaft. Now move the pencil in such a way to describe circles with the ends. That's the way an inline three moves on its mounts. No problem in a car, but it wobbles the entire prop disk in our application. So...keep the propshaft as short as possible, and the mount structure as stiff as possible.

    Dan
    Dan Horton
    RV-8 Fastback
    Barrett IO-390
    Alabama

  4. #4
    I did not know that, thanks much.
    *******
    Matthew Long, Editor
    cluttonfred.info
    A site for builders, owners and fans of Eric Clutton's FRED

    Voici ce que j'ai fait...vous pouvez en faire autant!
    "This is what I have done...you can do the same!"
    --Henri Mignet (1893-1965)

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