Results 1 to 6 of 6

Thread: My rpms to high

  1. #1
    Diukas's Avatar
    Join Date
    Mar 2010
    Location
    Lithuania (Europe)
    Posts
    12

    My rpms to high

    Hello
    I installed x-charger, skat trak seal, skat trak 15/19 r prop in to my 2006 rxp. My rpms went very high. I feeling engine cut off at 8640 down to 8400. Iven in hole shot from start i reach 8600. It sound like civitation, but realised that is engine over reving. My speed 78mph. I will install psi gauge next week to see boost numbers, but im sure is blowing good. I will try solas 15/20r tomorrow. I used this prop last year with same setup except stage 2 rxp riva sc impeller. My rpms was 8300, but when i took it out, i found out my sc was sliping. Torgue was only 5 nm. What repichment should i do on skat prop to lower rpms down ? Maybe i need compleatly different prop. As i say in holeshot is reaching limiter. I have to open half throttle to make good start and after couple seconds open full.


  2. #2
    formerly Gold06RXP Turbo Nick's Avatar
    Join Date
    May 2007
    Location
    Dayton, OH
    Posts
    2,095
    +1
    97
    Try the 15/20 and see what happens. get some #s and report back
    Quote Originally Posted by Diukas View Post
    Hello
    I installed x-charger, skat trak seal, skat trak 15/19 r prop in to my 2006 rxp. My rpms went very high. I feeling engine cut off at 8640 down to 8400. Iven in hole shot from start i reach 8600. It sound like civitation, but realised that is engine over reving. My speed 78mph. I will install psi gauge next week to see boost numbers, but im sure is blowing good. I will try solas 15/20r tomorrow. I used this prop last year with same setup except stage 2 rxp riva sc impeller. My rpms was 8300, but when i took it out, i found out my sc was sliping. Torgue was only 5 nm. What repichment should i do on skat prop to lower rpms down ? Maybe i need compleatly different prop. As i say in holeshot is reaching limiter. I have to open half throttle to make good start and after couple seconds open full.

  3. #3
    Diukas's Avatar
    Join Date
    Mar 2010
    Location
    Lithuania (Europe)
    Posts
    12
    Today i tried solas 15/20R, repiched to 15/21R. Still over limiter. It has less holeshot than skat 15/19R, but top speed went up to 79,5mph at 8640rpm. Im not realy looking at top speed, because im racing in cc. Most important is acceleration. I would like to do some repiching on skat prop? Any sugestions? From start it revs to limiter and feels like civitation only for few seconds and then goes to 8400rpm building slowly to limiter.

  4. #4
    Diukas's Avatar
    Join Date
    Mar 2010
    Location
    Lithuania (Europe)
    Posts
    12
    Any one?

  5. #5
    RNX's Avatar
    Join Date
    Jul 2007
    Location
    Lithuania
    Posts
    116
    Wait till the morning in US they are sleeping at the moment

  6. #6
    Diukas's Avatar
    Join Date
    Mar 2010
    Location
    Lithuania (Europe)
    Posts
    12
    Any one?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 2
    Last Post: 03-26-2016, 05:41 PM
  2. Replies: 15
    Last Post: 05-21-2015, 05:36 AM
  3. What should I want my RPM's to be
    By fcs1965 in forum 4-Tec Performance
    Replies: 11
    Last Post: 04-23-2012, 08:13 PM
  4. rxp-x 2012 need help to solve my rpm problem
    By abdulla in forum 4-Tec Performance
    Replies: 9
    Last Post: 04-20-2012, 12:58 AM
  5. I need to get my RPM's up-Any ideas.
    By Mongoose in forum Yamaha Old School Skis
    Replies: 28
    Last Post: 04-27-2007, 05:12 PM

Posting Permissions

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