Removing jon boat center bench seat

Discussion in 'Boat Modification Journal' started by blindfly69, Mar 28, 2008.

  1. blindfly69

    blindfly69 New Member

    Messages:
    774
    State:
    kentucky
    i'm posting this for someone i know who is currently looking into buying a 14ft riveted jon boat but only wants to do so if the center bench seat can be removed. If the seat was removed would the vessel still be structurally sound??
     
  2. Wabash River Bear

    Wabash River Bear New Member

    Messages:
    3,019
    State:
    Indiana
    I've seen alot of people do it, but the bench is part of the structure just the same as the ribs. To what extent it will weaken the hull I cant say, but it will definately weaken it if you dont replace it with a rib.
     

  3. catfisherman_eky3

    catfisherman_eky3 New Member

    Messages:
    2,296
    State:
    Kentucky
    ive seen people do it but they usually make repairs to it before putting it back in the water
     
  4. Katmandeux

    Katmandeux New Member

    Messages:
    1,618
    State:
    Checotah, Oklahoma
    I don't understand this.

    Why not buy a jon that's made w/o the center seat?
     
  5. fwmud

    fwmud New Member

    Messages:
    693
    State:
    Wilson's Mills,nc
    the removal will weaken it some.
    Your friend would need to replace the seat with a "stiffener" rib of some kind. The "benches" in a jon boat are a important part,so just cutting it out would be bad.
     
  6. ShilohRed

    ShilohRed New Member

    Messages:
    4,339
    State:
    West Tn
    IT easy just grind the heads off them on the inside down to where there level with the seat.
    Then take the seat out. And then with 2 hammers One on the out side hold it aganst the rivet. And the inside hit the rivet and it will seal the holes back over and not a leak/
    I you need more info just Pm me. Did this to a few of them. and last one I did was a 1988 new Polarcraft 1448 john new. Got it home and cut it out.
    Seen the boat last year and still not leaking . Used to to mussle in and fish bait nets and jumper lines.
    Petet
     
  7. BAM

    BAM New Member

    Messages:
    827
    State:
    Tennessee
    I removed both seats from a 1648 john, did not add anything but a plywood floor. Never had any problems and neighbor still has boat in use. Can be done but use some common sense.
     
  8. wayne1967

    wayne1967 New Member

    Messages:
    528
    State:
    Missouri
    If you "have" to do it strengthen the walls with plating of some type. Alum. is best but it's $. Drill through it into your ribs and rivet it to them. This will keep it from twisting. I've got an old bass boat that I cut the front deck back about a foot and a half and did this using sheet metal screws and rivets. No problems at all. You are talking about the center stability of your type of boat though. The time, work and money you spend you might want to save a while, sell what you have and buy what you need.
     
  9. rgmatt

    rgmatt New Member

    Messages:
    40
    State:
    Delaware River,Pa
  10. catfish kenny

    catfish kenny New Member

    Messages:
    6,064
    State:
    Iowa
    I have a 75 15ft lowe riveted-I took the seat out and riveted some railes down the inside plus screwed them down to my floor-Its as strong now as it was beore I did this....It also give me a place to mount lights to and behind them makes good odd/end storage.
    My first boat was a 74 polercraft and someone did this to it and no bracing ....still out there-Id brace it though!-You realy shouldnt do it but....hey it aint a catfishin boat unless you do:wink:
     
  11. cantstopgrandma

    cantstopgrandma New Member

    Messages:
    955
    State:
    MD
    I'm no structural engineer, nor have i removed a seat in a jon boat....however here's my 2 cents. When i was looking at boats, i looked at the alumicraft catalog, and found 2 that were the exact same model, except one had no center seat from the factory, the other did. The boat without the center seat had a longer front deck, and weighs more. I'm guessing that extra weight is in the longer deck and more bracing in the middle. Just something to think about. From the website, the 1442 with no center seat weighs 230# and the regular 1442 with the center seat weighs only 190#. That center seat may give more support than you think.
     
  12. ShilohRed

    ShilohRed New Member

    Messages:
    4,339
    State:
    West Tn
    Like I posted I did a few that way. and Put way more stress on them then anyone would ever do fishing with a rod and reel.
    Never a problem. And this was pulling up with a winch 500 lbs on and over the sides of the boat. mussel brales 12 ft long and would have couple hundred pounds of mussel shells on them.
    Pete
     
  13. Stubby

    Stubby New Member

    Messages:
    208
    State:
    Kansas, Ar
    It may make the sides a bit more flexable but wont have any effect on the floor.