Harris Marine Forum - General

Changing the deadrise

(8 posts) (2015 views)

No tags yet.

  1. Mike
    Mike

    Moderator
    Joined: Jul '08
    Posts: 1,924

    Currently Offline

    Here is a scott boat that we have cut the bottom out of and replaced it with a 14deg deadrise (was 16) and fitted plastic as well as replacing the 5mm 5052 std outter bottom with 6mm 5083 and also using the solid section planing strake instead of the 3mm that is fitted std. While we were at it we removed the SDM single stage jet and are fitting a two stage Southern jet in its place :big_smile:

    Posted 10 years ago    #                  
  2. Mike
    Mike

    Moderator
    Joined: Jul '08
    Posts: 1,924

    Currently Offline

    :big_smile:

    Attachments

    1. IMAGE_076.jpg (50 KB, 1 downloads) 10 years old
    2. IMAGE_075.jpg (107.2 KB, 1 downloads) 10 years old
    3. IMAGE_074.jpg (109.3 KB, 2 downloads) 10 years old
    4. IMAGE_073.jpg (85.2 KB, 1 downloads) 10 years old
    Posted 10 years ago    #                  
  3. Tonz
    Tonz

    Member
    Joined: Sep '08
    Posts: 20

    Currently Offline

    Would the solid strakes cause more deformation in hull when impacted being not able to be squashed??

    Posted 10 years ago    #                  
  4. Mike
    Mike

    Moderator
    Joined: Jul '08
    Posts: 1,924

    Currently Offline

    I dont believe so, The problem with the 3mm ones is that it only takes small hit to destroy them, the solid ones may add some strength. But at the end of the day you hit a big enough rock and everything will bend :grimace:

    Posted 10 years ago    #                  
  5. Tonz
    Tonz

    Member
    Joined: Sep '08
    Posts: 20

    Currently Offline

    True

    Posted 10 years ago    #                  
  6. Mike
    Mike

    Moderator
    Joined: Jul '08
    Posts: 1,924

    Currently Offline

    After a test run today I can say that the conversion is a huge success. The replacement bottom we have fitted is doing exactly as we predicted, The boat has gone from pushing water and not lifting (various things had been tried to get the boat to sit up and not push water) To trimming up as it should (even with neutral trim) The boat now breaks water well behind the drivers seat with neutral trim (no up trim at all)where it was well in front of the driver prior to our bottom going in.
    The other thing we have done is fit A 8 1/4 two stage Southern Jet. Our client was a bit nervous about going to the 8 1/4 two stage on his Lexus, but it has proved itself beyond expectations today and I can safely say the owner is going to very happy.
    I doubt anyone can tell that we have reduced the dead rise from 16deg to 14deg as the handling is surperb at both slow and high speed. It is impossible to get the jet to slip and mid range/top end punch is excellent, It pulls 5100rpm and accelerates hard right from a total standing start through to 5100rpm.
    You may be able to tell that I am extreamly happy with the results, Anyone about tomorrow that wants to see for themselves is welcome to call me and come for a ride and judge for themselves. The owner is due to pick up tomorrow night, but if you want to see how we can transform a boat then feel free to come and try :big_smile:
    I will have gps figures and pics tomorrow

    Mike

    Posted 10 years ago    #                  
  7. Mike
    Mike

    Moderator
    Joined: Jul '08
    Posts: 1,924

    Currently Offline

    With the Single stage jet the boat did 82km down stream and pushed allot of water. With the 8 1/4 two stage and our bottom in the boat it did 91km down stream. The motor is turning both jets to the same/similar rpm :big_smile:

    The first pics are with no up trim and the last ones are full up

    Attachments

    1. DSC_0599.jpg (65.2 KB, 1 downloads) 10 years old
    2. DSC_0597.jpg (59.8 KB, 1 downloads) 10 years old
    3. DSC_0592_-_Copy_(2).jpg (64.6 KB, 1 downloads) 10 years old
    4. DSC_0589_-_Copy_-_Copy.jpg (62 KB, 1 downloads) 10 years old
    5. DSC_0588.jpg (60.9 KB, 1 downloads) 10 years old
    Posted 10 years ago    #                  
  8. detroitdog
    detroitdog

    Member
    Joined: Mar '09
    Posts: 42

    Currently Offline

    Wow thats cool ,the lexus sure is a hard package to go past for general affordable adventure boating and seems to be the best set up with the unit in this boat and the scott junior :victory:

    Posted 10 years ago    #                  

RSS feed for this topic

Reply

You must log in to post.