Adjustable pitch prop & Rotax 670.....

Discussion in 'Firewall Forward / Props / Fuel system' started by MadProfessor8138, Jan 22, 2020.

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  1. Jan 22, 2020 #1




    Well-Known Member

    Nov 4, 2015
    Likes Received:
    I wasn't quite sure of which section to post this thread in due to it pertaining to a few different areas......2-stroke engines,props and Bush flying.

    The information :
    1. Ragwing Stork designed for extreme STOL performance
    2. Rotax 670
    3. Ivoprop...adjustable pitch or fixed pitch
    4. I want the ability to have the best of both worlds....climb & cruise.
    This aircraft will be used for Bush type flying but also flown distances at times to attend fly ins.

    My questions are :

    1. I know the concept of the adjustable pitch prop....but only in use on a 4-stroke.
    How do things differ when used on a 2-stroke?
    Is there any difference in the 2 operations.

    2. The STORK is designed for very short take off & landings.....which brings me to my next question.
    Would a clutch in the gearbox hurt or help?
    When power is pulled to idle the prop will be windmilling and should create a fair bit of drag to help bleed off speed at steep angles on approach.
    Thoughts on clutch in gearbox or no clutch ?

    3. Will the adjustable pitch prop offer enough performance over the ground adjustable to justify the cost ?


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