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  1. #1

    difference in 13/23,13/24 and 13/25.

    I tried to search but it would have taken me days. With the same setup how much will your rpms vary with the diff props. 13/32/24/25.
    thanks so long.


  2. #2

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    Quote Originally Posted by miker1 View Post
    I tried to search but it would have taken me days. With the same setup how much will your rpms vary with the diff props. 13/32/24/25.
    thanks so long.
    each pitch taller will reduce RPM's by app. 150 revs per each pitch increase, the same thing applys when you reduce the pitch the rpm's go up app. 150 revs per each smaller pitch. Tommy Jordan

  3. #3
    robk's Avatar
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    Do it the easy way, buy a tach to see what your max rpm's are, then send the prop to Impros and tell them what your rpm's are now and what you want them to be and let them take care of it. Thats what I'm doing right now. I'm running the Scat 13/23, with my mods I'm turning 7900 rpm's at 74mph. I emailed Impros and told them I wanted to be 400 rpm's higher. they said "no problem we can do that", so the prop is being shipped out to them today. I'll let you know the results when I get it back.

  4. #4
    Thanks for the input guys got a 13/23 that I have repitched twice I dont think I can go anymore. Problem is I am sitting at about 8700rpm.

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