ISO:Engine and propeller combinations

A forum about all aspects of the construction and maintenance of the Billy Dawson inspired modified Hatz Classic biplane. Here is the place to ask your questions and get the answers from the real experts.
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Ebby
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Joined: Wed Mar 17, 2010 7:32 pm
Location: Camden NY

ISO:Engine and propeller combinations

Post by Ebby »

    I’m using an O-320 with a wood 74x54 prop. Im interested in what other Hatzers with O-320s are using for props and what amount of engine offset they used when building. I’m running out of options to remedy a fairly strong left turning tendency. e.g. when I bank to the left all is well rolling back to the right much more stick force required. Maybe that’s normal. All wing rigging double checked and tail checked as well. Vertical fin offset 1” for the 150 hp. I will be going back and checking my engine offset next. Looking for other things I can check.
    Ebby
    Hatz Classic S/N 37
    Flying!
    hatz215
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    Joined: Tue Mar 23, 2010 3:29 pm

    Re: ISO:Engine and propeller combinations

    Post by hatz215 »

    Do you have a trim tab on the rudder?

    Steve
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    Ebby
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    Joined: Wed Mar 17, 2010 7:32 pm
    Location: Camden NY

    Re: ISO:Engine and propeller combinations

    Post by Ebby »

    No Steve I don’t have a rudder trim tab. My goal is to try everything I can think of and then add a trim tab if needed. It’s looking like I may need one. Could you share your experience on the best way to approach adding a tab on the rudder.

    Thanks for the reply and sorry for the delay.
    Ebby
    Hatz Classic S/N 37
    Flying!
    hatz215
    Posts: 110
    Joined: Tue Mar 23, 2010 3:29 pm

    Re: ISO:Engine and propeller combinations

    Post by hatz215 »

    I just attached to the bow with 2 sheet metal screws. My tab is probably around 4 " tall

    Steve
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    Ebby
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    Location: Camden NY

    Re: ISO:Engine and propeller combinations

    Post by Ebby »

    I see. 4” x ?”
    Ebby
    Hatz Classic S/N 37
    Flying!
    hatz215
    Posts: 110
    Joined: Tue Mar 23, 2010 3:29 pm

    Re: ISO:Engine and propeller combinations

    Post by hatz215 »

    It probably has about 2" aft of the bow
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    Ebby
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    Joined: Wed Mar 17, 2010 7:32 pm
    Location: Camden NY

    Re: ISO:Engine and propeller combinations

    Post by Ebby »

    Thank you!
    Ebby
    Hatz Classic S/N 37
    Flying!
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