Results 1 to 8 of 8
  1. #1
    dodgetrucker75's Avatar
    Join Date
    Jun 2012
    Location
    northern california
    Posts
    36

    impeller pitch vs speed and rpm

    Just wondering what everyone is running and how it works, what ski and impeller do u have and what speed and rpm do run?

    I just installed a solas 18/22 on a VX, gps showed 56 mph on choppy water, but the engine feels like it has a lot more in it, and I would like to try somethin different, from what I can tell most of these skis will interchange the impellers but they are not listed


  2. #2

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    not sure on a vx but on a sho i found solas had a lot of cavitation, you first need to know your rpm's and if there is a little more revs left you need to re pitch your prop to bring your revs up which will inturn increase your speed. you may want to go to 18/21 for instance although 18 sounds very high. that is a very tall prop which will need a lot of power to get it going. i think its mikefzr on here that sells prop guages very cheap. what is a stock prop on a vx and what if any mods do you have, that will affect what prop to use greatly.

  3. #3
    dodgetrucker75's Avatar
    Join Date
    Jun 2012
    Location
    northern california
    Posts
    36
    I have done a few mods to the engine, it has plenty of HP and pushes the 18/21 just fine and rpms are still in the redline, it didn't drop rpms at all compared to stock impeller, but I have no idea what stock impeller pitch is on a vx

  4. #4

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    if you are on the limiter then you need to go up a pitch at a time till your revs are where you want to be so you need to pitch to 18/23 to get off the limiter that will also increase your top speed slightly. if still on the limiter after that then go to 18/24 and so on.

  5. #5
    gordon lasiter #328's Avatar
    Join Date
    Aug 2008
    Location
    katy, texas , United States
    Posts
    1,647
    +1
    28
    Quote Originally Posted by dodgetrucker75 View Post
    I have done a few mods to the engine, it has plenty of HP and pushes the 18/21 just fine and rpms are still in the redline, it didn't drop rpms at all compared to stock impeller, but I have no idea what stock impeller pitch is on a vx
    What are you using to see where your rpms are?
    A digital tach is the only way to get an accurate ready. Anything else is mostly guess work.
    A tiny tach is a budget friendly tach.

  6. #6
    Jerz's Avatar
    Join Date
    Feb 2012
    Location
    Lake Lanier, GA (near it anyway)
    Posts
    146
    +1
    10
    ***deleted. wrong thread****
    Last edited by Jerz; 06-17-2012 at 03:23 PM. Reason: brain fart

  7. #7
    dodgetrucker75's Avatar
    Join Date
    Jun 2012
    Location
    northern california
    Posts
    36
    no body has any info to share on their setup? this thread wasnt meant to be about upgrading my ski, i wanted to get some info together on different impellers and what their results were

  8. #8

    Join Date
    Mar 2010
    Location
    the moon
    Posts
    862
    +1
    19
    oh sorry for the confusion, i have a sho with a skat 13/23 re pitched to 16/26 top speed is 82mph. lots of mods.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. '11 fzr IMPELLER PITCH vs RPM SHOULD I GO UP TO 23' PITCH
    By peterj59 in forum Yamaha PWC Performance (4-stroke)
    Replies: 9
    Last Post: 10-09-2011, 04:58 PM
  2. FX HO speeds and rpms
    By Hypertoys in forum Yamaha PWC Performance (4-stroke)
    Replies: 15
    Last Post: 11-20-2007, 03:16 PM
  3. After sucking up lure, top speed and rpm's dropped
    By ercBOOSTED in forum Kawasaki PWC Performance (4-stroke)
    Replies: 64
    Last Post: 09-17-2007, 10:30 PM
  4. Clearing My Top Speed And Rpm??
    By SPEEDJUICE in forum Kawasaki PWC Performance (4-stroke)
    Replies: 10
    Last Post: 07-23-2007, 08:50 PM
  5. Loss of speed and RPMs
    By NJ-Ski in forum Sea Doo Open Discussion
    Replies: 11
    Last Post: 07-21-2006, 10:34 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •