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Thread: Check your Tach

  1. #21
    Gilbert Pierce's Avatar
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    Default Re: Check your Tach

    What engine? My 58” will easily get 2700 with the 160 and barley with the 150.
    Last edited by Gilbert Pierce; 05-29-2021 at 08:37 PM.

  2. #22
    andya's Avatar
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    Default Re: Check your Tach

    When I had the O-320-150, at altitude (ie 8500 - 9500) full throttle and leaned would show about 2640 with a 60" pitch
    "Progress is our most important problem"

  3. #23
    Alessandro's Avatar
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    Default Re: Check your Tach

    Quote Originally Posted by Vagabondblues View Post
    thank you for this link, I suppose itís for experimental non certified.

  4. #24
    Alessandro's Avatar
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    Default Re: Check your Tach

    Quote Originally Posted by J Ryd View Post
    Ive got a low time A2B. It had a 60" prop and I had it repitched to 57. It maybe got me another 25rpm at best. Now about 2575rpm WOT. I question the repitch accuracy and may have another shop verify. Wonder why I cant get 2700? She runs like a top. All this done with a Trutak in the dash.

    Jan
    only 25 rpm from 60 to 57? It seems too little....

  5. #25
    Alessandro's Avatar
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    Default Re: Check your Tach

    Quote Originally Posted by andya View Post
    When I had the O-320-150, at altitude (ie 8500 - 9500) full throttle and leaned would show about 2640 with a 60" pitch
    can I ask you how many rpm at around 2000 ft full throttle?

  6. #26
    J Ryd's Avatar
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    May 2019
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    Default Re: Check your Tach

    I have the 150. I know, I thought the difference after the repitch didnt make sense? Steve once mentioned that a prop can lose pitch over time which could explain the minimal difference, but it has less than 1300hrs total time airframe since new. I'm in Denver area usually flying 7 or 8k density altitude.

    Jan

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