Page 1 of 4 1 2 3 ... LastLast
Results 1 to 10 of 33
  1. #1
    BLACK MAGIC HEADERS hydrojunkie's Avatar
    Join Date
    Jun 2007
    Location
    new york
    Posts
    3,529
    +1
    3

    The First Conversion With A Rxp Pump

    TODAY WAS A GROUND BREAKING DAY. I AM GOING TO DO MY BEST TO EXPLAIN BUT I HOPE SHIBBY CHIMES IN AND HELPS.



    FIRST I WOULD LIKE TO GIVE HUGE THANKS TO SHIBBY FOR HIS TIME AND KNOWLEDGE.

    FIZZLE FOR COMING FROM ALBANY DRIVING 4 1/2 HOURS FOR TESTING.

    AND MATTY FOR HELPING OUT

    SO HERE'S THE DEAL.EVERYTIME YOU SEE ME PUT UP A VIDEO IT'S NOT TO SAY OH LOOK AT MY SKI CHECK IT OUT. NOPE IT'S TO TEST A NEW PRODUCT. HEADERS MUFFLER , PUMP ADAPTER AND SO ON.

    NOW DOWN TO THE NITTY GRITTY. WE HAD A VERY PRODUCTIVE DAY AND FROZE OUR BUT'S OFF. 45 DEGREE'S


    FOR THE RECORD FIZZLE HAS A BORDERLINE STAGE 3 BOAT. 15/ 20R
    MY CONVERSION IS A MILD STAGE 2 WITH A 15/20R



    THE CONVERSION HAS A RXP PUMP STAINLESS WEAR RING AND A 15/20R WITH 2MM BENT.I AM USING A 81MM VENTURI WITH A 85MM STEERING NOZZLE. THE ACCELERATION IS PRICELESS BUT STILL HAS A LITTLE CAVITATION.

    THEN WE PUT IN A 15/19R STAGE 3 PROP AND HAD ZERO CAVITATION. I MEAN ZERO.THE ACCELERATION WASNT AS GOOD AS THE 4 BLADE BUT YOU DEFF NOTICED THE DIFFERENCE.IT'S AS IF THE 15/19 NEEDED A LITTLE MORE BOOST. BOTH PROP'S ARE PRETTY MUCH ON THE REV LIMITER.


    SPEEDS.

    THE 15/20R WITH A 2.5 DEGREE WEDGE , 81 MM VENTURI AND A 85 MM STEERING WENT 81.4 @ 8100. NOW WE NOTICED WITH NO WEDGES THE BOAT RAN JUST UNDER [email protected] 8100. WITH 1 2.5 DEGREE WEDGE IT WAS UP TO 81.5 THAT'S 4.5 MPH GAIN. SO THE NEXT TEST WILL BE WITH 2 2DEGREE WEDGES. WE ALL ESTIMATED BASED ON OUR TEST THAT IF WE GAINED 4.5 MPH WITH 1 WEDGE WE SHOULD DEFF SEE AT LEAST 2MORE MPH 2 2 DEGREE WEDGES. THAT BRINGS US TO 83.5 GIVE OR TAKE. THE 800 GRATE IS GOOD FOR 2 MPH THATS 85.5 ON A MILD STAGE 2 BOAT.

    YOU CANT AMAGINE THE ACCELERATION WITH THIS SKI. IT WAS INCREDIBLE. IT'S A WIN WIN SITUATION. HERES THE VIDEO. ENJOY




  2. #2
    Do you have any pics of the pump set up, it sounds interesting?

  3. #3
    BLACK MAGIC HEADERS hydrojunkie's Avatar
    Join Date
    Jun 2007
    Location
    new york
    Posts
    3,529
    +1
    3
    Here You Go
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	100_1599.JPG 
Views:	190 
Size:	565.7 KB 
ID:	65018   Click image for larger version. 

Name:	100_1600.JPG 
Views:	169 
Size:	566.0 KB 
ID:	65019  

  4. #4
    Great work Jason, keep it up

  5. #5
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
    Posts
    16,066
    +1
    23
    Quote Originally Posted by hydrojunkie View Post
    Here You Go

  6. #6
    West Texas RXP skoepp's Avatar
    Join Date
    Oct 2007
    Location
    west texas
    Posts
    12,019
    +1
    149
    Great work Guys

  7. #7
    Banned User
    Join Date
    Dec 2006
    Location
    Crest Hill, IL
    Posts
    9,512
    +1
    215
    NICE! It was only a matter of time before someone tossed that pump on that ski...

  8. #8
    tweeker's Avatar
    Join Date
    Jul 2007
    Location
    Denver NC
    Posts
    706
    +1
    45
    Is that Darryl Marinelli's old gpr race hull?

  9. #9
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    Location
    FL
    Posts
    8,628
    +1
    808
    If Darryl's forum name is sponge racing then yes that's his old hull.

    New and improved: powered by seadoo all the way

  10. #10
    maybe would be a better challenge if the rxp wasnt jumping up and down at the holeshot

Page 1 of 4 1 2 3 ... LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. lucky 13 cone on a conversion with a seadoo pump
    By Steve-m31164 in forum Conversion PWC Performance Skis
    Replies: 13
    Last Post: 12-19-2015, 07:22 PM
  2. first issue with my RXP
    By mibunkerking in forum 4-Tec Performance
    Replies: 11
    Last Post: 10-04-2013, 09:11 AM
  3. what prop for gpr conversion with rxp pump
    By kenlepack in forum Conversion PWC Performance Skis
    Replies: 5
    Last Post: 02-08-2012, 10:27 PM
  4. I Am Pleased To Introduce First Gprxp With Rxp Pump
    By hydrojunkie in forum Conversion PWC Performance Skis
    Replies: 36
    Last Post: 04-11-2008, 01:32 PM
  5. took the new rxp out for the first time today
    By mxl16 in forum 4-Tec Performance
    Replies: 2
    Last Post: 06-17-2005, 08:13 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
  •