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  1. #51
    Admiral smokeonthewater's Avatar
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    Default Re: mini speed boat transom repair

    a single keel roller at the rear and two bunks will be more than enough. The roller at the rear would make it easier to launch and load on a shallow ramp... honestly the two bunks alone would be fine too...... think jetski
    Kevin

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  2. #52
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    Default Re: mini speed boat transom repair

    some more paint.
    The white is still the undercoat, will start the gloss stuff this week.



  3. #53
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    Default Re: mini speed boat transom repair

    Excellent finish on this. The filling and fairing has really paid off.

  4. #54
    Lieutenant Junior Grade TruckDrivingFool's Avatar
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by registeroot View Post
    Excellent finish on this. The filling and fairing has really paid off.
    I'll 2nd that, its looking sweet with some color on it.

    Nice work Peter.

  5. #55
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    Default Re: mini speed boat transom repair

    finished the top coat of white paint!

    im still deciding on the inside colour. im thinking a light grey.




  6. #56
    Rear Admiral lakelover's Avatar
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    Default Re: mini speed boat transom repair

    Looking great, you've really come a long way!
    I've learned from Sages, and I've learned from Fools.

    My project (with index): 1964 Starcraft Jet Star

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  7. #57
    Supreme Mariner jbcurt00's Avatar
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    Default Re: mini speed boat transom repair

    Man, the red & white look great!

    I don't remember seeing what you landed on for power: 30-40hp?

    Power T&T?

    Were you waiting for the paint work to be complete or mostly complete before a pool float test?

    Good looking little boat, should be a screamer!
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  8. #58
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    Default Re: mini speed boat transom repair

    the boat is only 8 foot!
    all the 2 cylinder 40s were still 2 heavy so they are out of the picture.
    I had planned on a 30 but after seeing how much heavier the boat is now i became concerned with the weight of the motor. So im starting off with something smaller, a 18hp electric start tohatsu. They weigh 90 lbs. The 25/30 tohatsu weigh 115 lbs.

    If the boat handles the 18 fine and weight is not so much of an issue and i feel i can gain more speed ill certainly look at upgrading. I sanded all the electrolysis off the engine and am waiting for some touch up paint. I also serviced the engine and its running great. I also bought a tacho for it.

    Im getting so close to rigging this thing!! i might dunk it in the water this weekend for a float test.

  9. #59
    Supreme Mariner jbcurt00's Avatar
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    Default Re: mini speed boat transom repair

    Great to hear there's a float test pending! Paint work looks good.

    At 8' you might be able to move the fuel forward and not spend a fortune on fuel hoses. Is there an acceptable battery that weighs less then a full size marine battery?
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  10. #60
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    Default Re: mini speed boat transom repair

    its a small ride on mower / jetski type battery, so its still built to marine specs. I had to get electric start because their is no room to manoeuvre around in this thing
    I have the standard 15L fuel tank but i only plan on ever putting in 5L at a time. Do you know of any other "miniature" fuel cells i could use to save space and weight?

  11. #61
    Supreme Mariner jbcurt00's Avatar
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    Default Re: mini speed boat transom repair

    It's a 3Gal, a little smaller then 15L (3.9+/- Gals if my math is correct) and 3L would be just under a gallon. That should run a small motor for a good bit even at WOT. Make it easy to access & refill as needed. It's an odd shape designed to sit right at the transom under the motor mount.



    There are other 3Gal tanks on the market:



    I think those are both Aussie approved.

    iBoats.com also has 3Gal tanks available.

    Whatever tank you consider make sure it's Aussie compatible....

    I didn't see anything smaller then 3Gal in the quick search I did w/ google. But dig around, you may find a smaller marine tank. Although I doubt it. The only 1's smaller I've seen are the integral top mounted tanks on small 2+/- HP outboards. Those are usually only 1/2 - 1.25Gal tanks.

    Is it size limitations of the under deck space or weight your most concerned about? If you could get a long narrow tank to run along under the gunnel, 1.5-2 gals (I don't have the metric equal but 10-15lbs of fuel) of fuel would probably off set the weight of the battery under the opposite side gunnel. Both could be slid forward to be just under the front edge of the 'cowl~cockpit coming'.

    In the pictures it looks like there may be room to sit flat on the bottom & upright w/ your feet out under the forward cap. But I'm guessing this will be a cushion under your knees, crouched down driving position. That would move more of your body weight forward some & be easier to adjust your weight back & forth as needed while underway.
    Last edited by jbcurt00; March 14th, 2012 at 04:51 PM. Reason: Metric conversion typo
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  12. #62
    Lieutenant Junior Grade TruckDrivingFool's Avatar
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by Peter16 View Post
    Im getting so close to rigging this thing!! i might dunk it in the water this weekend for a float test.
    Make sure you take some pics. If you don't have her rigged by then take an oar and paddle it'll count as a boat ride.

  13. #63
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    Default Re: mini speed boat transom repair

    thanks for the links, the issue would probably be more about weight. Right now the 15L tank fits in neatly behind my seat and infront of the splash well. However it would be great if this spot was empty so i could have somewhere to stand.

    Of course i could always stash the tank up in front of my feet. My only concern is that the fuel pump on the motor may not be able to handle this?

    I have been looking at go kart and lawn mower fuel tanks on ebay, Can anyone see an issue with using one of these? Provided the outlet is 5/16.

    Here is the update. I threw her in the pool to see where it would float with a motor on and whether it would float at all!

    make shift boat ramp was a lounge chair cushion




    success!


    And I got a friend to use some muscle to retrieve her.


    With the equivilant of a motors worth of weight sitting on the back, the "rub rail" at the stern just touches the water surface.

  14. #64
    Supreme Mariner jbcurt00's Avatar
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    Default Re: mini speed boat transom repair

    If anything ever goes awry, having a non-marine approved tank on-board would make for fairly sticky wicket here in the states. I suspect it would be similar down under. Great Barrier reef & all.

    Looks great in the pool, nice job on ramp launch & recovery.

    I think you need another float test W/ a 45lb thrust trolling motor. Just a few quick hot laps....of course pix & vid appreciated.

    Does the 18hp electric start tohatsu use a pressurized fuel tank? I'm guessing not, since you ask about the fuel pump. It still uses a squeeze bulb on the fuel line? It's a siphon system, so keep the line tucked up along & under the gunnel, so that it doesn't dip & sag a time or 2, should keep from over working the fuel pump. A single gallon +/- running around basically at WOT shouldn't last so long as to burn up the pump if it is taxed.....

    Given the small length & beam, have you considered adding any sort of floatation to keep the boat afloat if it were to get water in the hull? I suspect it will be very difficult to remove & reinstall the drain plug that appears to be installed.
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  15. #65
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by jbcurt00 View Post
    If anything ever goes awry, having a non-marine approved tank on-board would make for fairly sticky wicket here in the states. I suspect it would be similar down under. Great Barrier reef & all.



    Does the 18hp electric start tohatsu use a pressurized fuel tank? I'm guessing not, since you ask about the fuel pump. It still uses a squeeze bulb on the fuel line? .

    Given the small length & beam, have you considered adding any sort of floatation to keep the boat afloat if it were to get water in the hull? I suspect it will be very difficult to remove & reinstall the drain plug that appears to be installed.
    I suspect our coast guard equivilant is less strict as yours and although i am 1500 kilometers south of the reef i think i will play it safe and go with an approved fuel vessel.

    You are correct just a standard petrol tank with an inline primer bulb. The OEM fuel hose on the tank is 7 foot long. Which is just about what i need. One would assume the motor can handle this length seeing as though Mercury/tohatsu made it.

    In what instance do you think the plug will be difficult to remove? When the boats sinking and i have to unscrew it and take off onto the plane to drain the water? lol (its just a standard bung fitting you remove when your boats back on the trailer...) Since i have a battery on board i have cut an inspection port in my deck and i will be able to install an electric pump down in the "bilge"

  16. #66
    Supreme Mariner jbcurt00's Avatar
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    Default Re: mini speed boat transom repair

    I had more of a vision of you having to lean over the transom, reach around the motor & under water to pull the plug from the outside, which would tend to compound the water flowing into the hull problem, given the small overall size of the boat. Esp since you mentioned the lack of mobility 'forced' the decision to buy an electric start motor. Quickly, and then of course getting back up onto plane...

    A screw plug from the inside is probably more then sufficient. And MUCH easier to remove, if needed, while the motor is running and the boat is underway. Still a good idea to add a bilge pump.

    I don't know exactly how to calculate the required volume & of what kind of floatation, but when the time comes, I know I can find it. Neither of the boats I purchased had any required 'oh carp' floatation, because they were built before the USCG regs went into affect. But I am going to install as much as I reasonably can under the deck, gunnels & cap.
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  17. #67
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    Default Re: mini speed boat transom repair

    edited

  18. #68
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    Default Re: mini speed boat transom repair

    Im on the tail end of rigging it now. The only thing stopping me is motor height.
    I need to get a jacking plate of some sort to lift it up higher. So its a bit of a set back, i had planned to launch it on wednesday. Oh well.




  19. #69
    Rear Admiral lakelover's Avatar
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    Default Re: mini speed boat transom repair

    How much do you need to raise it?
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  20. #70
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    Default Re: mini speed boat transom repair

    a good 2".

    the swivel clamps will not reach the current transom put it that way.

  21. #71
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    Default Re: mini speed boat transom repair

    A quick search on the net for "homemade jack plate plans" throws up some simple ideas which only cost 40-50 bucks in materials to make.
    Maybe that will help you out.
    Can't wait to see it splashed , nice job it's a lovely little runabout..

  22. #72
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by fishfeatures View Post
    A quick search on the net for "homemade jack plate plans" throws up some simple ideas which only cost 40-50 bucks in materials to make.
    Maybe that will help you out.
    Can't wait to see it splashed , nice job it's a lovely little runabout..
    Thankyou so very much for this suggestion i had not even considered DIY. Most designs just use 4 pieces of 1/4" angle alloy. Simple.

  23. #73
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by Peter16 View Post
    Thankyou so very much for this suggestion i had not even considered DIY. Most designs just use 4 pieces of 1/4" angle alloy. Simple.
    Yeah most of them seem to be foolproof ( famous last words! ) , I've actually got 4'x4' angle aluminum on order from my steel guy. I'm gonna chance making one myself if I get it done before you I'll let you know how it went and vice versa

  24. #74
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    Default Re: mini speed boat transom repair

    Quote Originally Posted by Peter16 View Post
    Im on the tail end of rigging it now. The only thing stopping me is motor height.
    I need to get a jacking plate of some sort to lift it up higher. So its a bit of a set back, i had planned to launch it on wednesday. Oh well.



    Could you tell and add a picture of how the control and steering cables pass through the hull?

  25. #75
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    Default Re: mini speed boat transom repair

    they just pass through an elongated hole with a rubber "Slop Stopper" in it. The UV destroys them pretty quickly so i may replace it with a stainless one.

    I am going to launch it as is with out the jacking plate just so i can see how the boat sits fully laden. Then i can make adjustmeants as i see fit. Ill go for a few quick runs just to see how big a issue the motor depth is and to see how the prop performs. (75% sure it will need replacing)



    you can see the tacho in this shot. The steering wheel is from the 70's. I know its ugly but it was free!




    bilge pump test

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