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Thread: 4 Strokes on Tiller Steer Tinnies

  1. #1

    4 Strokes on Tiller Steer Tinnies

    Hi

    I am thinking about a traditional tinnie - probably 4.2 to 4.35. I'm not talking about a centre console or forward steer, the balance is completely different. In that size they don't have fancy transoms - all of the weight must be supported by a traditional arrangement.

    Generally motors are 30-40hp. At that size you don't see many 4 strokes. Are they too heavy to get out of the hole or is it just the price.

    Any comments?

    Whichway

    .

  2. #2
    Whichway , had a 4.29 clark abalone and 50 honda tiller no probs just a dump wave if you back off suddenly. 32 knots flat stick.
    Wasn't a bad setup, seaworthy but still get up creeks and rivers.
    18 lt of fuel for 100 km trip at about 17 knots..
    4m clark magnum and 40 suzuki , had a nose up attitude without trim ,
    but felt awsome as soon as it got over the hump 30 knots ( water bobsledding). fuel about the same as honda . Put her into some 1 m chop and I always wished I had the 4.29 again.
    Make sure you get power trim and tilt , I would rather tiller in 4.75 m and under. Lets you have small boat control in seaworthy vessel.
    Also the layout is a lot more suitable to fishing, not boating just fishing.
    I went on a 400 nautical mile trip in the 4.29 all over kimberley coast when I was a lad ( full of cum and very dum).
    I put full floors with alloy frame and 9 mm marine ply in both boats.
    Seats where alloy spigots.
    I wouldn't even consider a 30 hp , and when you get a 40 hp they weigh the same as a 50 hp. Also both boats where 3 mm bottom and 3mm sides,
    with lots of floor and side ribs add the weight of a full floor and I'd say a 30 hp would be underdone. Efi makes the 4 strokers instant but best fuel figures where the honda setup.
    Go the 4.35/4.55 and a 40/50 4 stroker and be done with it , power trim and tilt on tiller handle and just get out there and enjoy.
    Ta.

  3. #3
    HI

    Thanks for the feedback. Only prob is that I think you just upped the budget by about 2-3K. Still, I want to get the right boat/motor for the job, so I might see what is around

    whichway

  4. #4
    Boats , always a compromise .
    Maybe a good as new secondhand rig is on the cards , all done for you.
    Ta.

  5. #5
    As Saurian says.....no worries but get power trim/tilt.
    You will not regret the extra expense after the first trip.
    The 4 stroke makes a world of difference especially noise wise as your sitting next to it.
    Best thing I ever did was put the Honda on the tiny tinny

  6. #6
    Hi

    If second hand, what life out of a second hand 4 stroke - I would expect to get at least 10 years from a well maintained motor, is this reasonable, usually the hours on a tinnie wouldn't be an issue - they will corrode out first.

    Whichway

  7. #7
    Whichway , corrosion will be the killer of a good maintained secondhand 4 stroker, same as 2 stroke .
    4 strokes have a better hourly lifespan than 2 strokes in my
    experience. No new motor at 1000 hrs more like 3000hrs.
    Ta.
    Last edited by saurian; 22-01-2007 at 08:39 AM. Reason: reread previous post

  8. #8
    I have a 40hp 4 stroke on the back of my 4.4 Savage Jabiru. No issue with weight at all. Beautifully balanced, very quiet, smooth and efficient. I think there is only about 15kgs difference between this one and my old 2 stroke. Completely negligible in my opinion.

    Cheers

    Dave

  9. #9
    I have a 50hp 4str on the back of my 445 Ally craft sioux. Before I put in the under floor fuel tank up front, it sat a little tail heavy, but still a great boat
    The 4 stroke is much better to sit beside for any journey big or small, and a pleasure to troll with.

  10. #10
    I got a 50hp 4st yammy on my 4.55m seajay. Its good on the juice, and gets along nice and quiet on the troll. As others have said, try and get power trim / tilt - it makes things lots easier, especially if you like to do missions in choppy conditions.

    oddbudman

  11. #11
    I own a 420 Quinnie Explorer trophy with 40hp Yammie 4stroke tiller and love it. Quiet, fast and great on fuel. Still get 25 knts or 52km /h and the elec trim/tilt , tuen key starting it is awesome in chop.

    I could get a 40hp lightweight and save kg and get more speed but with fuel mixing, manual trim tilt and pull start I wouldnt go back.

    Cheers

    Aaron

  12. #12
    Hey, Modern 4 strks are no problem weight wise. In my unqualified opinion just make SURE you get power tilt and trim for a big tiller steer. (PS- they are good fun !).

  13. #13
    Nobody has mentioned the Yammy 60hp in tiller steer. I know they make it, but it seems like most people top out at 50hp for tiller steer. Any reason? Anybody used the 60hp Yammy as a tiller steer? I am thinking about it on an Allycraft 4.50 Tank. It is rated for up to 60hp and 128kg of motor weight and I think the 50hp and 60hp 4 stroke Yammys are about the same weight, so why not the 60hp?

  14. #14
    check the kilowatt/rating for the particular hull you choose if you are relying on an insurance policy.

    Mate is a bit sad his year model is rated to 20hp, yet identical hull and floors etc next year was rated to 40. Manufacturer has offered to stamp it for him if he takes it in, which is ok I guess

  15. #15
    Go the 60 RC. I think the tanks are a great boat, and some time ago Col from Fisher boats had a boat (Fisher) for a customer with a 140 hp tiller! Bloody awesome looking setup.

    Cheers
    Dave

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