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Thread: Sensenich ground adjustable prop

  1. #51
    akflyer's Avatar
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    Default Re: Sensenich ground adjustable prop

    When we were running the tests for the 180 HP along with a few other, the spread sheet I used captured hard data in terms of speeds, take off times, time to climb, RPM etc. It was pretty eye opening. We have sheets on a lot of planes now and all are pretty consistent. If they need to something to show it pulls better then I would say a 48.9% less time to take off is pretty solid, as well as increased climb and cruise.

    As far as increased CHT's. I saw a slight increase but putting the spinner on and plugging up air leaks with new baffles and filling in un needed gaps around the airfilter, starter hole and the no longer needed oil cooler did the trick to keep everything easily within limits. I have done A LOT of testing with this prop on A LOT of different planes and all have the same results... NO one who tried it was willing to take it off after they flew with it.

    I heard from one guy a few years ago that was a whirlwind dealer that was talking crap about the increased CHT's his "buddy" had that tried the Sensenich and that is where the AK CHT issues started and ended. A competing dealer who was trying to find something wrong with a prop that has a far superior pitch change method.

    Steve, take one of the pitch pins that's way too fat for the 160 to pull and put it on a lathe and turn it down to between a 3 and 4. Should give you 35.5 pitch and that's the sweet one I have found for the pacer that is best compromise between take off and cruise. Still a 48% faster take off than the 82X44 borer and 7 MPH faster in cruise.

  2. #52

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    Default Re: Sensenich ground adjustable prop

    Any ideas if I could get this approved for a 1965 Cherokee 180C, that I occasionally fly in STOL Contests???
    Based in Central Florida area!
    Thanks!

    STOL Ad.jpg

  3. #53
    Administrator Steve Pierce's Avatar
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    Default Re: Sensenich ground adjustable prop

    It is type certified for the engine but you might need an nose gear extension to clear the 82" blades.

    Did you make home that Sunday, weather didn't look to good.

  4. #54

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    Default Re: Sensenich ground adjustable prop

    Made it home at 13,500' on the last stretch.
    Wasn't too bad.

    Can this prop be setup at 76" do you know???

  5. #55
    Administrator Steve Pierce's Avatar
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    Default Re: Sensenich ground adjustable prop

    We tested it at 76" on the Super Cub.

  6. #56

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    Default Re: Sensenich ground adjustable prop

    There is a 76 version of this prop.

    https://www.sensenich.com/shop/aircr...eed-propeller/

  7. #57

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    Default Re: Sensenich ground adjustable prop

    Is there any movement on someone securing an STC for the PA22 yet?

  8. #58

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    Default Re: Sensenich ground adjustable prop

    Quote Originally Posted by sophistical View Post
    There is a 76 version of this prop.

    https://www.sensenich.com/shop/aircr...eed-propeller/

    The address on their website is about 70 miles from Me.

    Any thoughts on whether I'd be wasting my time and theirs, to go talk to them on a Cherokee 180 installation, that may ultimately end up as an STC they could market??

    Thanks for any thoughts!

    Jeff

  9. #59
    Administrator Steve Pierce's Avatar
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    Default Re: Sensenich ground adjustable prop

    As far as the PA22, I can tell you they are more than 3 years and $400k into the Super Cub and still no STC. The FAA can come up with the most ludicrous things ever. I was going to pursue the PA20 PA22 STC until I got involved in the Super Cub STC.

    Their intent as I understand it is to STC the 172 and the Cherokees but won't happen fast.

  10. #60
    Administrator Steve Pierce's Avatar
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    Default Re: Sensenich ground adjustable prop

    As far as the PA22, I can tell you they are more than 3 years and $400k into the Super Cub and still no STC. The FAA can come up with the most ludicrous things ever. I was going to pursue the PA20 PA22 STC until I got involved in the Super Cub STC.

    Their intent as I understand it is to STC the 172 and the Cherokees but won't happen fast.

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