Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 7 of 7

Thread: outboard pod

  1. #1
    Join Date
    Jan 2014
    Location
    weymouth dorset uk
    Posts
    3

    Default outboard pod

    hi sorry if this has been asked befor but i am new to the forum .....i am rebuilding my fairy hunt 18 sborts boat and coverting it from inboard to outboard and wish to build the pod mysailf i have been serfing the net for some time for plans and have had no luck there is discushion and pics but no plans i can fined ads for pre made pods but by the time i have payed for it and had it shiped to the uk and payed import tax it is not viable and as i am good a fiberglassing it will be nice to do the job if there is anybody that can help i will be happy thanks dave

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Join Date
    Feb 2008
    Location
    Eustis, FL, USA
    Posts
    2,270

    Default

    Welcome to the forum.

    If by pod you mean an outboard bracket, possibly with some additional built in floatation, well these need to be engineered. You can buy one, but these aren't cheap (as you've found). Any reasonable designer or NA can pen one up for you, though you'll have to pay for this too. How big an outboard are you intending to use?

  4. #3
    Join Date
    Jan 2014
    Location
    weymouth dorset uk
    Posts
    3

    Default outboard pod

    hi thanks for the reply yes i did mean a outboard bracket thay seam to be named deferant things depending on where you are the outboard i hope to use is a chrysler force 125hp if i can get plans i am thinking off building the pod i 3/4 ply with the internal corners strenthend with qodrent and the hole thing coverd inside and out in 2 or 3 layers of wovern roven and a extra layer of 2inch woven tape between eatch layer on all the edges i do know that i have to spread the load of the deferant forces the transom is put to as i used to build custom cars in my youth thanks dave

  5. #4
    Join Date
    Feb 2008
    Location
    Eustis, FL, USA
    Posts
    2,270

    Default

    3/4" plywood just isn't going to cut it. There's several considerations you have to take, in order to get the math right for this. For example, lets say you're running a 300 pound outboard and placing it on a 24" back spaced bracket. This is 600 pounds of static leverage on the bracket and it's mounts. Welcome to cantilever load calculations and this doesn't even count the thrust of the running engine.

    Yes, the transom will need reinforcement, though often (depending on the transom construction) it could be just some hefty backing plates.

    A light fabric sheathing is a good idea, but isn't going to impart a lot of strength and stiffness, unless it's quite thick. I'd strongly recommend you get this properly engineered, particularly if you expect some built in floatation to help hold up this amount of weight, without undue handling issues underway.

  6. #5
    Join Date
    Jan 2014
    Location
    weymouth dorset uk
    Posts
    3

    Default outboard pod

    hi again par you know more then me on this then me but i sead in my first post that i had spent some time serching the net and if you like to type in outboard pod into your browser and check the 3rd pic down posted by longbeach 57 you will see where i got my thoughts from he made his from 3/4 ply but used csm to fiberglass where as i will usr 600grm wovern woven witch will make it stronger he used a 85hp v4 johnson witch comes in at 300lb the same as my force 125hp also the inboard and drive that came out off my hunt 18 was a 4ltr v8 witch comes in a lot more then 300lb there is some replys to his post let me know what you think if you still think i am out off my depth i will rethink thanks dave

  7. #6
    Join Date
    Feb 2008
    Location
    Eustis, FL, USA
    Posts
    2,270

    Default

    I don't do a lot of Google searches, nor am I surprised by what you might find. The real question is what happened after the YouTube video showed how "successful" it was. Simply put, I don't have a lot of faith in home grown engineering with this sort of thing. I've seen manufactured brackets break off and deposit the outboard in the drink. I can only imagine what a string bean farmer might come up with. If you'd like to go this route, enjoy, but if you want one that will not break and offers additional floatation for the stern, which will surely squat more with a bracket mount, it needs to be done professionally.

  8. #7
    Join Date
    Apr 2002
    Location
    Brisbane
    Posts
    5,773

    Default

    I don't know what is done in other parts of the world of if the terms translate.

    But "outboard pods" are pretty common in Australia both factory fitted and as after market additions.

    In general the ones I see here could not be considered "brackets" they are more or less hull or transom extensions and they do vary greatly.

    I have a "pod" on one of my alloy boats, and I have been scratching my head for years as to it being factory or a later mod.
    There where lots of dodgey things done "factory" at one time or another.

    Ya not just going to find "a plan" for a pod, because it would be different for every boat.

    there is so much to think about, in how it will mount, where that will place the outboard and what the effect will be on the handling and flotation of the boat.

    Some are simply minor alterations to the transom..some are as little as a 300mm(1 foot) set back in the middle of the transom..little more than a modification to the top rail of the transom.

    some are complete hull extensions in the middle of the stern that extend the middle plaining surface.

    Most are like mine, that consist of a box structure with a rail to mount the outboard outside the transom.

    In the case of my boat the pod structure, once the rear steps and rails are included extends the full width of the stern and is way stronger than the original transom ever would have been.

    I think you need to look futher than pod plans.

    I realy think you need to consider all the options of what to do with the stern of your boat and how that will influence how the boat floats and handles.

    In my case the boat in question is at the moment a neglected project.....but it has a couple of issues due to the pod..good and bad.

    once up on the plane having an outboard out beyond the transom has the advantages that it tends to push the boat higher in the water keep the prop in the water and to a certain extent a better line of force.

    BUT it does stick a big lump of weight a long way back.

    At rest my boat sat down in the ass quite considerably....it tended to nose up considerably comming out of the hole, onto the plane and once on the plane tended to nose up in swell particularly when comming up a wave agressivly...I was always concerned that it would stand on its ass if I pushed it up a wave a bit too fast.

    all these issues where due to weight distributon.
    I am in the process of moving the console and any other weight I can forward as part of the refit..and the new decking and flotation will be a bit heavier than what existed.


    your boat being an ex inboard I expect to have similar issue if you have not addressed the weight distribution issues.

    I would be inclined to bring the motor in as far as is practical.

    First port of call is to go boat shopping......go to boat ramps, boat yards and look at boating web sites and see what is bieng done with similar boats.....if there is an outboard version of your inboard boat.....hell get a good look at one.

    If you get a good look at a few you will see how they have been done.

    OH..I don't know how it is in the UK......but it is very common for the transoms of older fibreglass boats to be rotten........so before you do anything have a realy good..and not optomistic look at ya transom...you may be up for a transom rebuild anyway.

    cheers


    OH...BTW..how is she for flotation....I don't know about there but here many older boats leave a lot to be desired in the way of flotation...lots of not all that old boats will sink like a stone once they don't have all the water outside the hull.

    I did a job on my smaller boat a few years ago...she now floats almost level with the bungs out......that is a great comfort.

    cheers
    Any thing with sharp teeth eats meat.
    Most powertools have sharp teeth.
    People are made of meat.
    Abrasives can be just as dangerous as a blade.....and 10 times more painfull.

Similar Threads

  1. Outboard
    By westford in forum MISC BOAT RELATED STUFF
    Replies: 1
    Last Post: 27th January 2011, 10:26 PM
  2. outboard rig for the Cougar
    By bowl-basher in forum WOODTURNING - GENERAL
    Replies: 8
    Last Post: 16th August 2010, 12:17 AM
  3. outboard turning bit
    By bowl-basher in forum WOODTURNING - GENERAL
    Replies: 3
    Last Post: 8th August 2010, 01:31 PM
  4. Old outboard
    By hereselmo1 in forum BOAT BUILDING / REPAIRING
    Replies: 13
    Last Post: 19th January 2010, 10:36 AM
  5. Outboard Turning
    By Rustic in forum WOODTURNING - GENERAL
    Replies: 4
    Last Post: 8th November 2003, 04:12 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •