User Tag List

Page 1 of 3 1 2 3 LastLast
Results 1 to 15 of 39
  1. #1
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Offset Low Water Pickup Holes in Nosecone

    Anyone seen this sort of thing before? Is this designed to create a ďdrag biasĒ on one side of the nosecone to help offset the torque of the propeller? This unit has a torque tab as well, although itís not bent as much as the typical torque tab, so Iím wondering if this water pickup offset helps offset the torque??
    Click image for larger version. 

Name:	33A4C120-D47C-4751-A1F0-BA6323AD0C17.jpg 
Views:	166 
Size:	424.0 KB 
ID:	512728
    Attached Thumbnails Attached Thumbnails A73174E1-71D7-4578-983E-A58704D4235B.jpg  

  2. #2
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    9,502
    Thanks (Given)
    468
    Thanks (Received)
    625
    Likes (Given)
    2341
    Likes (Received)
    3971
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    I believe that to be an Allison modification. Show a pic of the skeg cuz the Ally mod involves the skeg also.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  3. Thanks CI STV thanked for this post
    Likes Michael J Giesler liked this post
  4. #3
    Join Date
    Sep 2001
    Location
    Fairfield, CT
    Posts
    18,265
    Thanks (Given)
    25
    Thanks (Received)
    284
    Likes (Given)
    100
    Likes (Received)
    2227
    Mentioned
    2 Post(s)
    Tagged
    2 Thread(s)
    Not buying any drag "bias change" for torque reduction. I saw no change in my testing. Titus used to do several different intake configurations and I'm sure others did as well. I have the starboard hole in my Sporty plugged, it increased speed .7 MPH. But I would only do it in a motor that makes tons of water pressure.
    Living in the Freedom provided by Bud Conner and his fellow warriors.
    R.I.P. my Heathen Brother



    Click for Countdown to the Romp


  5. Thanks CI STV thanked for this post
    Likes rgsauger, Baker343 liked this post
  6. #4
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rock View Post
    I believe that to be an Allison modification. Show a pic of the skeg cuz the Ally mod involves the skeg also.

    Rock
    I’ll take a picture of the skeg/tab and post it up later.

  7. #5
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by transomstand View Post
    Not buying any drag "bias change" for torque reduction. I saw no change in my testing. Titus used to do several different intake configurations and I'm sure others did as well. I have the starboard hole in my Sporty plugged, it increased speed .7 MPH. But I would only do it in a motor that makes tons of water pressure.
    Thanks. I was just wondering why it was off-centered like that, and that’s all I could come up with, lol.

  8. #6
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    9,502
    Thanks (Given)
    468
    Thanks (Received)
    625
    Likes (Given)
    2341
    Likes (Received)
    3971
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    I purchased a sportmaster from a friend because he said the motor would get hot. He had been using it on his Ally when it was stock and it worked fine. Motor is a 15" 200xs ros. After modifications the hot issue appeared. I bought it cuz I needed a 15" lower and figured I could make it work. Turned out he had a 1/2" water tube. I changed over to the 3/4" I have always ran and it has never failed me. Had lower on several STVs and a couple Allisons. As far as the mods go I could not tell you if it made any difference or not. My guess is their blocked hole was to make the supply to the prop cleaner. I think the 3/4" tube is necessary with only 2 holes.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  9. Thanks CI STV thanked for this post
    Likes David - WI, rgsauger, Baker343 liked this post
  10. #7
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rock View Post
    I purchased a sportmaster from a friend because he said the motor would get hot. He had been using it on his Ally when it was stock and it worked fine. Motor is a 15" 200xs ros. After modifications the hot issue appeared. I bought it cuz I needed a 15" lower and figured I could make it work. Turned out he had a 1/2" water tube. I changed over to the 3/4" I have always ran and it has never failed me. Had lower on several STVs and a couple Allisons. As far as the mods go I could not tell you if it made any difference or not. My guess is their blocked hole was to make the supply to the prop cleaner. I think the 3/4" tube is necessary with only 2 holes.

    Rock
    Thanks. Iím running a 3/4Ē tube and it was making right around 20 psi with my other XR6 with Bobs nosecone.
    Hereís what the tab looks like:
    Click image for larger version. 

Name:	42F24F06-A535-4A91-A5D6-048DA9CB6CE7.jpg 
Views:	149 
Size:	419.0 KB 
ID:	512745


    Click image for larger version. 

Name:	F4222387-15A6-48BF-BE9F-DC344044E8C1.jpg 
Views:	148 
Size:	411.5 KB 
ID:	512746

  11. #8
    Join Date
    May 2004
    Location
    Minnesota
    Posts
    938
    Thanks (Given)
    6
    Thanks (Received)
    9
    Likes (Given)
    5
    Likes (Received)
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I was told it gives cleaner water to the starboard side for the prop.
    Quartermaster
    XB2002 W/S3000

  12. Thanks CI STV thanked for this post
    Likes David - WI, 25two.stroke liked this post
  13. #9
    Join Date
    Sep 2001
    Location
    Fairfield, CT
    Posts
    18,265
    Thanks (Given)
    25
    Thanks (Received)
    284
    Likes (Given)
    100
    Likes (Received)
    2227
    Mentioned
    2 Post(s)
    Tagged
    2 Thread(s)
    Quote Originally Posted by CI STV View Post
    Thanks. I’m running a 3/4” tube and it was making right around 20 psi with my other XR6 with Bobs nosecone.
    Here’s what the tab looks like:
    Click image for larger version. 

Name:	42F24F06-A535-4A91-A5D6-048DA9CB6CE7.jpg 
Views:	149 
Size:	419.0 KB 
ID:	512745


    Click image for larger version. 

Name:	F4222387-15A6-48BF-BE9F-DC344044E8C1.jpg 
Views:	148 
Size:	411.5 KB 
ID:	512746
    That's a common mod. And THAT one is supposed to help with torque steer. It creates a low pressure area to "pull" the gearcase straighter. I have not tested it because there's no claimed speed increase and my setup doesn't present much torque steer.
    Living in the Freedom provided by Bud Conner and his fellow warriors.
    R.I.P. my Heathen Brother



    Click for Countdown to the Romp


  14. #10
    Join Date
    May 2004
    Location
    Minnesota
    Posts
    938
    Thanks (Given)
    6
    Thanks (Received)
    9
    Likes (Given)
    5
    Likes (Received)
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by transomstand View Post
    That's a common mod. And THAT one is supposed to help with torque steer. It creates a low pressure area to "pull" the gearcase straighter. I have not tested it because there's no claimed speed increase and my setup doesn't present much torque steer.
    Sorry if there was any confusion. I was replying to the offset intake hole mod not the torque tab mod.
    Quartermaster
    XB2002 W/S3000

  15. Likes Michael J Giesler liked this post
  16. #11
    Join Date
    Sep 2001
    Location
    Fairfield, CT
    Posts
    18,265
    Thanks (Given)
    25
    Thanks (Received)
    284
    Likes (Given)
    100
    Likes (Received)
    2227
    Mentioned
    2 Post(s)
    Tagged
    2 Thread(s)
    Quote Originally Posted by Scott in MN View Post
    I was told it gives cleaner water to the starboard side for the prop.
    I think that theory is total crap. Next time somebody tells you that ask for proof. Nobody has ever been able to show any evidence of it. "Clean water" and "rising water" off the transom are wildly overrated.
    Living in the Freedom provided by Bud Conner and his fellow warriors.
    R.I.P. my Heathen Brother



    Click for Countdown to the Romp


  17. #12
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by transomstand View Post
    That's a common mod. And THAT one is supposed to help with torque steer. It creates a low pressure area to "pull" the gearcase straighter. I have not tested it because there's no claimed speed increase and my setup doesn't present much torque steer.
    Yep, I know what the torque tab is for and how it works, lol. I haven’t come across any high speed outboard with a surfacing prop that doesn’t need one though.

  18. Likes Baker343 liked this post
  19. #13
    Join Date
    Aug 2017
    Location
    Grand Cayman
    Posts
    543
    Thanks (Given)
    342
    Thanks (Received)
    37
    Likes (Given)
    325
    Likes (Received)
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by transomstand View Post
    I think that theory is total crap. Next time somebody tells you that ask for proof. Nobody has ever been able to show any evidence of it. "Clean water" and "rising water" off the transom are wildly overrated.
    That’s going to be really hard to prove…

  20. #14
    Join Date
    May 2004
    Location
    Minnesota
    Posts
    938
    Thanks (Given)
    6
    Thanks (Received)
    9
    Likes (Given)
    5
    Likes (Received)
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by CI STV View Post
    That’s going to be really hard to prove…
    That is true. How do you explain the .7 mph increase with the starboard hole plugged?
    Meant the speed inrease to transomstand.
    Last edited by Scott in MN; 11-27-2022 at 01:42 PM.
    Quartermaster
    XB2002 W/S3000

  21. Thanks CI STV thanked for this post
  22. #15
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    9,502
    Thanks (Given)
    468
    Thanks (Received)
    625
    Likes (Given)
    2341
    Likes (Received)
    3971
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    He forgot the bunny that day.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  23. Likes CI STV liked this post
Page 1 of 3 1 2 3 LastLast

Similar Threads

  1. bob's nosecone/low water pickup installation
    By reacler in forum Props, Setup, and Rigging
    Replies: 6
    Last Post: 05-08-2020, 09:35 PM
  2. Mud or sand in low water pickup nosecone
    By The Bilge Idiot in forum Technical Discussion
    Replies: 10
    Last Post: 09-04-2006, 01:54 PM
  3. Aftermarket low water pickup nosecone help
    By Mr Walker in forum Technical Discussion
    Replies: 7
    Last Post: 06-30-2006, 09:03 AM
  4. Aftermarket low water pickup nosecone help
    By australian ski racer in forum Technical Discussion
    Replies: 0
    Last Post: 06-20-2006, 06:55 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
  •  
Chris Carson's Marine