User Tag List

Page 1 of 8 1 2 3 4 5 6 7 8 LastLast
Results 1 to 15 of 119
  1. #1
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    School Pjoject - Ben Hur Hydroplane

    School started last week and we have begun our major project this year in Advanced Materials Processing. As a class we are building a 60's style hydroplane called a Ben Hur made famous by Hal Kelly. I chose this design because it is wider than your average hydro, also more stable and buoyant. We are not looking to race but rather just have some fun testing on the water. The plans are also more affordable and can be built with locally attainable materials (we are on a budget).

    Rock was nice enough to donate a whole bunch of outboard parts including a late 70s's 70hp 3 cyl merc. We have stripped down the motor rebuilt carbs and fixed up whatever electrical components that were deteriorating. We anticipate the weight of the motor to be about 120 lbs (stripped down). We could probably drop it another 5-10 lbs or so if we delete the starter. Cold compression appears to be good and after some simple adjustments the motor popped off and actually idled. We slapped a 15" leg and lower from a merc 402 on and it bolted right up. We are in the process of adding a low water pickup so we can run the lower nice and high. By no means is this a race motor, but it it should make some decent power to weight and i think it will work if propped right and setup with proper weight distribution.

    As far as building the boat goes, we are in the process of gathering materials and setting up templates for the ribs. Since we are not looking to race the boat, ribs will be built either out of true 3/4 mahogany or mahogany surfaced down to true 1/2" instead of spruce lined 1/4" marine ply.

    I have experience with outboards, woodworking and some fiber-glassing but do not consider myself a pro as some of you are. Please feel free to make recommendations.

    Attached are some pictures of the start. Ill be sure to document future progress, looking forward to the build. Forgive me if these pics dont work, im learning here.&nbsp;&nbsp;<br><br>https://i.imgur.com/Wz4yFZd.jpg<br>https://i.imgur.com/yriCCey.jpg<br>https://i.imgur.com/DwQI9Lt.jpg<br>https://i.imgur.com/rnjpCzM.jpg<br>https://i.imgur.com/Gje2NJP.jpg
    Last edited by Seanj85; 09-12-2019 at 11:11 AM.

  2. Likes nitro_rat, tnelsmn, 89LASER, Instigator liked this post
  3. #2
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Click image for larger version. 

Name:	20190910_133138.jpg 
Views:	97 
Size:	484.0 KB 
ID:	448677Click image for larger version. 

Name:	20190912_110502.jpg 
Views:	96 
Size:	397.9 KB 
ID:	448678Click image for larger version. 

Name:	20190912_110739.jpg 
Views:	168 
Size:	408.3 KB 
ID:	448679Click image for larger version. 

Name:	20190910_130513.jpg 
Views:	135 
Size:	417.7 KB 
ID:	448680

  4. Likes 89LASER liked this post
  5. #3
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,251
    Thanks (Given)
    244
    Thanks (Received)
    330
    Likes (Given)
    1432
    Likes (Received)
    2035
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Thanks for posting this. Excited to watch the progress.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  6. Likes Seanj85, Instigator liked this post
  7. #4
    Join Date
    Jul 2006
    Location
    Minneapolis MN
    Posts
    359
    Thanks (Given)
    105
    Thanks (Received)
    18
    Likes (Given)
    898
    Likes (Received)
    284
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Can't wait to see this come together. Shop class was my saving grace in high school. Never built anything this cool though.

  8. #5
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Well this past week went quick. We got templates made up and started cutting out ribs. We are using one by 6 mahogany, which looks more like sapele. Either way it should have good holding ability for fasteners. Hope to have ribs done next week and maybe even begin laying out girders.

    Click image for larger version. 

Name:	20190920_133953.jpg 
Views:	71 
Size:	417.6 KB 
ID:	449187Click image for larger version. 

Name:	20190916_125628.jpg 
Views:	58 
Size:	411.9 KB 
ID:	449185Click image for larger version. 

Name:	20190920_133945.jpg 
Views:	79 
Size:	428.6 KB 
ID:	449186Click image for larger version. 

Name:	20190917_125206.jpg 
Views:	82 
Size:	407.9 KB 
ID:	449184Click image for larger version. 

Name:	20190920_134002.jpg 
Views:	73 
Size:	433.8 KB 
ID:	449188

  9. Likes tnelsmn, 89LASER liked this post
  10. #6
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Ribs are officially complete, getting them to the perfect size was a little bit of a struggle as we broke some and ate up some (expensive) material in the process. Getting each one the perfect opening size for girders was difficult as well. We wound up finding the center of each rib and marking 9 1/4" out from each center to give us a perfect opening of 18 1/2" for the driver. We are almost ready to build Girders and beams for the sponsons and anticipate starting them next week.
    Templates for each are being built out of foam core, which is challenging. Students have been learning how to read a scaled drawing and transferring measurements with an architects scale on to the templates. We have had a couple problems and are moving a little slower than I had hoped, but the kids are still excited about the build and have been really receptive to the challenges. I feel like they are getting a lot out of it. Attached are a few pics I took today.Click image for larger version. 

Name:	20191004_143803.jpg 
Views:	68 
Size:	410.3 KB 
ID:	450150Click image for larger version. 

Name:	20191004_143004.jpg 
Views:	57 
Size:	413.1 KB 
ID:	450152Click image for larger version. 

Name:	20191004_142953.jpg 
Views:	64 
Size:	410.4 KB 
ID:	450153
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	20190920_133953.jpg 
Views:	46 
Size:	417.6 KB 
ID:	450151  

  11. Likes tnelsmn liked this post
  12. #7
    Join Date
    Jan 2004
    Location
    Lindenhurst, NY
    Posts
    506
    Thanks (Given)
    56
    Thanks (Received)
    38
    Likes (Given)
    1771
    Likes (Received)
    159
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I wish all schools brought back shop classes. Your progress looks great, keep up the quality work. You'll always have some breakage along the way, part of the learning curve.

  13. Likes Seanj85, Instigator liked this post
  14. #8
    Join Date
    Jun 2018
    Location
    Floating around
    Posts
    1,606
    Thanks (Given)
    74
    Thanks (Received)
    126
    Likes (Given)
    558
    Likes (Received)
    783
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Cool school
    Hydrostream dreamin

  15. Likes Instigator liked this post
  16. #9
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by 89LASER View Post
    I wish all schools brought back shop classes. Your progress looks great, keep up the quality work. You'll always have some breakage along the way, part of the learning curve.

    I think it's one of the most important classes, not everyone is made for school. Thanks for the comment! Started cutting girders today, progress pics to come.

  17. Likes Instigator liked this post
  18. #10
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    8,251
    Thanks (Given)
    244
    Thanks (Received)
    330
    Likes (Given)
    1432
    Likes (Received)
    2035
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Almost all the schools in our area have abandoned industrial arts classes. Teachers are saying nobody wants to sign up for anything that does not concern computers. In my opinion this is where the school board needs to step in and make it mandatory. As great as all this tech stuff is we are still going to need carpenters, electricians, mechanics, and people that can read a tape or maybe even add without a machine. The mindset of the teaching profession needs a overhaul about as bad as our government. My hat is off to you Sean as you are teaching skills they will soon have no other way to acquire. Good job.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  19. Likes tnelsmn, Seanj85, Rigaud liked this post
  20. #11
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    We spent the 4 day week laying out girders. They were layed out to scale from a pretty small picture where 1/8" = 1'. Templates were derived from foam core and transferred to 1/4" marine ply. We stapled the two girders together so they would be identical when cutting them out. Not sure how accurate we are but I have a feeling we are close. Today it all came together and was the first day it started looking like a boat, students were excited as they were all taking pics to show their friends. Progress is slow, but there is only so much that we can do in a 40 minute time slot each day. Next week my goal is to get ribs attached to girders and start getting cutting sponson beams and battens.
    Click image for larger version. 

Name:	20191007_125958.jpg 
Views:	60 
Size:	415.4 KB 
ID:	450530Click image for larger version. 

Name:	20191007_130007.jpg 
Views:	55 
Size:	408.0 KB 
ID:	450531Click image for larger version. 

Name:	20191011_134632.jpg 
Views:	77 
Size:	426.6 KB 
ID:	450532Click image for larger version. 

Name:	20191011_141302.jpg 
Views:	72 
Size:	429.4 KB 
ID:	450533Click image for larger version. 

Name:	20191011_141242.jpg 
Views:	75 
Size:	432.5 KB 
ID:	450534

  21. Thanks rock thanked for this post
    Likes tnelsmn, 89LASER liked this post
  22. #12
    Join Date
    Jul 2006
    Location
    Minneapolis MN
    Posts
    359
    Thanks (Given)
    105
    Thanks (Received)
    18
    Likes (Given)
    898
    Likes (Received)
    284
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Good progress! Will the students get a chance to drive it when finished?

  23. #13
    Join Date
    Apr 2015
    Location
    Oceanside, NY
    Posts
    140
    Thanks (Given)
    20
    Thanks (Received)
    6
    Likes (Given)
    48
    Likes (Received)
    109
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by tnelsmn View Post
    Good progress! Will the students get a chance to drive it when finished?
    Well, the school doesn't want to me to let anyone drive it. Buttttt exceptions can always be made. I want to see how it performs first before putting anyone's child behind the wheel. If it seems safe enough and kids have taken a safe boaters course I would like to give them a spin. About half the kids working on it are seniors, so they will no longer be associated with the school once the summer rolls around, so that shouldnt be an issue.

  24. #14
    Join Date
    Jul 2006
    Location
    Minneapolis MN
    Posts
    359
    Thanks (Given)
    105
    Thanks (Received)
    18
    Likes (Given)
    898
    Likes (Received)
    284
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thats good to hear, once they graduate not much the school can do about it. Plus you'll be coming into summer after graduation, so that's perfect timing. Built myself a nice dresser and TV stand in wood shop, but never a boat. So cool!

  25. Likes Seanj85 liked this post
  26. #15
    Join Date
    Oct 2001
    Location
    Fremont WI
    Posts
    1,058
    Thanks (Given)
    123
    Thanks (Received)
    32
    Likes (Given)
    1222
    Likes (Received)
    536
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just a quick question, transom Height? Cant tell by the instructions posted, but what is the transom height in the plans? Neat to see this happening and maybe some younger folks will get interested in this stuff
    1994 Brad Collins Mirage Jag.with 1990 2.4 BP E.F.I Offshore

Page 1 of 8 1 2 3 4 5 6 7 8 LastLast

Similar Threads

  1. OMC Tech: School Me On Old School ('50's) 2 Banger JohnRudes......
    By Instigator in forum Technical Discussion
    Replies: 32
    Last Post: 01-14-2015, 07:48 AM
  2. Hydroplane,,an old one.
    By Eagle127 in forum General Boating Discussion
    Replies: 18
    Last Post: 03-09-2013, 09:00 AM
  3. Old School V.S. New School Paint
    By EVILWAYS in forum General Boating Discussion
    Replies: 138
    Last Post: 07-29-2009, 02:24 PM
  4. jet hydroplane?
    By KEVIN NICHOLS in forum Technical Discussion
    Replies: 11
    Last Post: 04-01-2003, 06:57 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
  •  
Frank Mole Transport