Results 1 to 5 of 5
  1. #1
    Phil's Avatar
    Join Date
    May 2005
    Location
    Smith Mountain Lake, VA
    Posts
    1,428
    +1
    23

    It is starting to make sense to me now

    I have just reviewed Mykull's video and now I can see why his ski is so much faster than mine. He really does have a very fast Ultra, congrats Mykull! He smashed the RXP he ran and of course splashed the rider in the face with a wall of water while doing it. This is the beginning of the Ultra’s water conditions, the rougher the better.

    I have carefully gone over the video several times and paid particular attention to the attitude of his hull. He has managed to get most of the deep -V- out of the water and reduce his wetted surface. Wow, what a difference it makes. Take a close look for yourself and compare it to your Ultra’s attitude. My Ultra rides much wetter than his, which is probably why my ski is a slug on the top end.

    On the other hand my Ultra comes of the hole like gangbusters and kills all the '07 RXTs I have run out of the hole. I have viewed the GH shootout video and the Boat Test video about a dozen times and based on that, my Ultra would destroy the SHO’s in those videos out of the hole.

    Are you starting to see my point? I am getting a great hole shot, but losing the top end. It has to be a combination of the ride plate, the wedge and the prop. Horsepower is NOT the answer. We need you pros to jump in on this theory and help solve the problem for all of us. As proven in MyKulls video, his Ultra is indeed a fast ski. What are us plebes doing wrong?

    You can view Mykulls video at:
    http://youtube.com/watch?v=0HOwF-tr0CE and


    You can view the Boat Test video at:
    http://youtube.com/watch?v=PTCW9BGK8nI&feature=related
    Last edited by Phil; 04-06-2008 at 07:58 AM.


  2. #2
    tomgtv's Avatar
    Join Date
    May 2006
    Location
    Weston Florida (Ft. Lauderdale)
    Posts
    1,744
    +1
    1

    It's in the Rideplate.....

    I can tell you that Pipidulce and KawiRyder are running consistent
    71, 72 mph via GPS with only ride plate, wedge and removal of
    plug under glovebox. I run about 65 - 66 on a good day with stock
    ride plate. I intend to put the Riva one on shortly. It's good for
    at least 2/3 mph. Some holeshot and maybe handling are reduced.
    But how do you measure it??

    CHeck out SE Rides for yesterday's run offshore in 4/6' waves.
    http://greenhulk.net/forums/showthread.php?t=53826
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Helium Air.jpg 
Views:	44 
Size:	176.3 KB 
ID:	66100  

  3. #3
    Phil's Avatar
    Join Date
    May 2005
    Location
    Smith Mountain Lake, VA
    Posts
    1,428
    +1
    23
    Quote Originally Posted by tomgtv View Post
    I can tell you that Pipidulce and KawiRyder are running consistent 71, 72 mph via GPS with only ride plate, wedge and removal of plug under glovebox. I run about 65 - 66 on a good day with stock ride plate. I intend to put the Riva one on shortly. It's good for at least 2/3 mph.
    I have Jim's Ride Plate and getting 0.5 mph. Are you saying that the Riva ride plate is that much better? Or maybe, we have installed the ride plate incorrectly?

  4. #4

    Join Date
    Jan 2007
    Location
    Georgia
    Posts
    20
    +1
    1
    My wife's ski with riva plate and holes drilled in the glove box cover will do 69+ gps with a best of 69.6 late last summer. I expect her ski to bury that number real soon without a pulley upgrade.

  5. #5
    Beagleman62's Avatar
    Join Date
    Mar 2007
    Location
    Richmond, Virginia
    Posts
    2,726
    +1
    64
    If you listen closely, you can hear the RXP hooking and unhooking while the 250X hooks up and moves out. I ride that lake quite often and so far as chop, what you see in the video is nothing. Phil, you are correct about getting the hull out of the water. A Riva plate and wedge are 2 of the easyest things to get more speed out of the 250X. It also likes lots of fresh air. Intake and exhaust mods will give you a little bit on top end but you will see a bigger difference with bottom end and midrange with those changes. As most of us found out last year, some 250's are faster than others. Don't really know why. Phil, I hate to say it but maybe you have one of the slower ones.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Do you think it is possible to...
    By GeordieBoyKel in forum Polaris Open Discussion
    Replies: 3
    Last Post: 01-26-2009, 09:21 PM
  2. Well It happened again to me!
    By 2fast4u in forum Yamaha Open Discussion
    Replies: 1
    Last Post: 05-06-2008, 03:10 PM
  3. The Parts List for the 08's is Starting to Go Up Now
    By boataddict in forum Sea Doo Open Discussion
    Replies: 0
    Last Post: 02-11-2008, 12:20 PM
  4. Wipeout...it finally happened to me.
    By Rio Vista in forum Yamaha Open Discussion
    Replies: 12
    Last Post: 09-30-2007, 08:36 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
  •