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  1. #1

    Join Date
    Nov 2002
    N. Syracuse, NY

    Big Gas 4 Stroke Sound?

    Does anyone know WHY the Kolm 200 sounds as good as it does?!

    I'd thought the Mokis sounded good, but the Kolm even puts those a distant second. I'm dreaming of a big warbird (inline or otherwise) with Galloping Ghost type sound, but I'm wondering if it will ever be really affordable to the average GS modeler.

    I had some (fleeting) hopes of DA actually making a US based (and therefore maybe cheaper?) 4S with this news:

    But with that size and supercharger I think they must have been going for a UAV and/or elite market.

    Now I see the newest big German offering is in a similar market category.

    Is it the Power? Is it the timing/arrangement of the cylinders? Exhaust system? It seems only a multi cylinder tends to give that rumbling/thumping Harley Davidson effect I crave. It seems these days the sound of a model is becoming more and more important to to me as I make my way around the various hobby disciplines, including gliders, EDFs and GS topics. I used to not mind a screaming Jett 40 if it gave me the performance I wanted, but now I really seek out subjects based on their sound quality first.

    I know multi cylinder 4 stroke motors are necessarily complex, but do the tolerances and manufacturing complexities really automatically price them into the stratosphere?

    Even if a motor was an anchor with marginal power, if it sounded great, and was reliable and affordable, I'd find a way to make it fly on a good warbird. I'd think there would be a big market for such an animal.

    Arguing with an engineer is like wrestling a pig. Everyone gets dirty and the pig likes it.

  2. #2

    Join Date
    May 2002
    Mandeville, JAMAICA
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    RE: Big Gas 4 Stroke Sound?

    I'm quite sure that there are lots of persons that share a similar dream and have very similar thoughts too.

    When inverted always remember that down is up and visa versa

  3. #3

    Join Date
    Oct 2006
    Memphis, TN

    RE: Big Gas 4 Stroke Sound?

    I think on the GG it is a combo of # of cylinders, exhaust and prop. Also they dont seem to scared to rev it. The 4 cylinder in the Spit did not sound as good. Their engines are probably a side job. I doubt they make enough to justify the $500K+ CNC machine they got.

  4. #4
    Old Fart's Avatar
    Join Date
    Apr 2008
    Perth, AUSTRALIA

    RE: Big Gas 4 Stroke Sound?

    Hi windy yes you do share what a lot of other people think after they hear the 3 cylinder 200,fourstroke triples usually have that distinctive exhaust note i like and have lost count of how many times i've watched that vid and the other ones kolm have put up.If i take the big leap it will likely be later next year and then it will be the 270 degreecrank longnose IL135twin.A compromise for sure but it too has a nice growl tho nothing matches the 200 for me.
    Watch out for the ground eh?

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