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Thread: What impeller?

  1. #1
    rmk82nd's Avatar
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    What impeller?

    So I thought I got a 15/20 but it looks like this guy is backing out so now I was curious if I should get a 14/19 or a 15/20? I will have an x charger, 42lb injectors, 4" intake and grate. What would be the best option in your opinion? I will not be running a fuel regulator or controller for a few moths until the wife gives the ok however I will be getting one.


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    b_dolla44's Avatar
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    15/20 for sure...

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    h2jim's Avatar
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    +1 on the 15/20.

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    Moderator Snoman's Avatar
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    +2 on the 15/20

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    how would a stock rxpx prop go on this setup

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    rmk82nd's Avatar
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    I could be wrong but I believe the stock rxpx uses a 15/20.

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    WOT 88's Avatar
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    Quote Originally Posted by rmk82nd View Post
    I could be wrong but I believe the stock rxpx uses a 15/20.

    14/23 ish... they have measured differently for a few people.

    But no , not 15/20

  8. #8
    rmk82nd's Avatar
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    So the 15/20 is out of stock however I could pick up a new 14/19 non R for $175. Would this be good for now or will I just end up replacing it later. I noticed that there are some guys running the 14/19R with their setups. By the way I will be riding most of the time 800 feet above sea level.

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    I searched google and found

    R&D Performance has measured the progressive pitch on the O.E.M. impellor and offers the following information as a reference when considering aftermarket impellor replacements or up grades. R&D offers this information to help insure that when replacing the impellor, the right purchase will be made, and performance demands will be spot on.
    Progressive Pitch 13-17 over 145 degrees
    Progressive Pitch 23 degrees over the last 15 degrees
    Total blade length in degrees is 160 degrees
    Total blade pitch average 13/17/23

  10. #10
    rmk82nd's Avatar
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    I am new here and don't have a clue what this means can you explain thanks.

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