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  1. S

    2013 - Turbine powered hydrostatic launch craft

    Yes, the timing was right for the contest for us. You know it turned out good when the "little inspector" giggles loud enough to hear it over the engine noise! :wai::auto::cornut:
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    2013 - Turbine powered hydrostatic launch craft

    Before and After Here's the before and after pictures. We took it for a spin and the little inspector liked it and had lots of fun riding. This contest was a good motivator to get this project done.
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    2013 - Turbine powered hydrostatic launch craft

    Last minute changes Ok, so I bought a torque converter and finally got it installed. I re-connected the gas pedal to the throttle and I think everything is working. Of course, nothing can be easy on this project. I had to drill and tap a hole in the end of the engine shaft. That was not as...
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    2013 - Turbine powered hydrostatic launch craft

    The problem with the Hydrostat Drive Well, I gave it a shot. I tried the best I could to get the hydrostat drive to work for my go-kart. It would move it if I was on flat concrete, but it just didn't have much output torque. It would not go at all in the grass. I also had problems keeping...
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    2013 - Turbine powered hydrostatic launch craft

    I have the foot throttle, but I am using a lever for now since you don't really need to adjust the engine speed much.
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    2013 - Turbine powered hydrostatic launch craft

    Done! Thanks. Whew! What a project. There's still room for improvement. http://www.youtube.com/watch?v=mehWzDdyY6M
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    2013 - Turbine powered hydrostatic launch craft

    It RUNS Woo hoo! It runs!:wai: That little bitty hole in the carb must have been the reason the carb kept leaking. Amazing how such a small hole can make that much difference. I put the carb back on and put on a new fuel line, fuel shut off valve and fuel filter. When I added gas and...
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    2013 - Turbine powered hydrostatic launch craft

    Atmospheric vent hole Ok, after much Googling, I found a little vent hole I did not see earlier. I found it after wire brushing even more on the body of the carb. I used a little wire and cleaned it out. I set up a little test stand to check the float. I put gas in the funnel and let it run...
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    2013 - Turbine powered hydrostatic launch craft

    Shift lever and muffler Got the shift lever installed with linkage to hydrostat tranny. I don't have any detent positions, so you just have to feel for the center neutral position. Also mounted a big muffler off the donor Deere. It's slightly quieter.
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    2013 - Turbine powered hydrostatic launch craft

    Going Nutty!! That carb still leaks. I think I don't like Tecumseh carbs. I haven't had many problems with briggs carbs. I've rebuilt the carb from my Scout and my truck without any problems, but this one is not cooperating. I'm wondering if the float is sticking. It seems to leak gas out...
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    2013 - Turbine powered hydrostatic launch craft

    Carb Rebuild Well, I finally got the carb kit and spent part of Saturday rebuilding it. The carb itself is in good shape and some of the parts definitely needed replacing. It still leaked when I put it on, but I messed around with it a bit and it doesn't leak now. I tried running it a bit...
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    2013 - Turbine powered hydrostatic launch craft

    Drivetrain A few pics of the drivetrain. I don't have a good way to cut slots to adjust the motor, so I got a belt that was close and used a few washers to adjust the motor. I ended up with the chain and belt just right. I know they'll both stretch over time, but for now it will work. I'm...
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    2013 - Turbine powered hydrostatic launch craft

    Little Welder Little Welder (I know it's not a welding helmet and she doesn't weld.)
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    2013 - Turbine powered hydrostatic launch craft

    I ordered a carb kit, so maybe I'll be able to get it running smooth again. Thanks again landuse, the service info book had good carb information.
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    2013 - Turbine powered hydrostatic launch craft

    Pictures Picture of engine/tranny (no drive chain). Picture of pedals for brakes and throttle.
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    2013 - Turbine powered hydrostatic launch craft

    Frustrating Carburetor I think I'm inhaling too many fumes from gasoline... whew. Does anyone have experience with Tecumseh carbs? This is an 8hp HM80 from a snowblower. I'm trying to get the engine to run and having problems. I went through the carb. a few months ago and cleaned it. Now...
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    2013 - Turbine powered hydrostatic launch craft

    I had a bracket welded on the back for the hydrostat drive, but I had to cut it off and go a different route. I'm now working on a set of sq. tubes that will 'clamp' on so I can adjust them. I don't have a way to make slots to slide the engine and adjust belt tension, so I'll slide the...
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    2013 - Turbine powered hydrostatic launch craft

    Have a seat Ok, got the seat frame built and installed the seat. The seat seems to sit up a little higher than I was expecting, but it works. The seat has adjustment forward and back. Now I need to work on the powertrain. I need to scrounge around to find an engine mounting plate, use some...
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    2013 - Turbine powered hydrostatic launch craft

    Gimme a Brake Got brakes now. I like that caliper and disk. One odd thing, the brake disk had a keyway, but the neither setscrew was on the keyway. I just have some tape on the axle on each side to keep the key from sliding out. Mfg defect or on purpose? I also added a hitch on the back...
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