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  1. Replies
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    Hi are you bring T850 to singapore. Can you...

    Hi are you bring T850 to singapore.
    Can you send me more details I.e. boat type engine etc
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    Thanks guys.

    Thanks guys.
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    Tohatsu Throttle cable

    Folks, I need help. I am planning to pick up a foot throttle and understand they make it in 2 different configurations to cater to the different engine makers.

    Can some kind soul help confirm...
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    Thanks, dont think jim's program covers spray...

    Thanks, dont think jim's program covers spray rails on sponson pads more on the tunnel walls but the comments make sense...
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    Tunnel sponson Pad Spray Rail

    Can someone enlighten me of the benfits/effects of adding a spray rail on the tunnel sponson pad...
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    Quty, what props are the 50hp tunnels running?...

    Quty, what props are the 50hp tunnels running? Any insight about the mods you have done on your rig?
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    Not sure if this fits your needs. If you are...

    Not sure if this fits your needs. If you are planning to build, dDo a search on Google and you will find several recreations tunnels on the net eg. Tunnel King fr Glen L. If you are seeking single...
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    Quty, nice, are these SST 60 engines? 14 foot...

    Quty, nice, are these SST 60 engines? 14 foot tunnel ?? What are the rules you race by? How is your setting for hull??
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    Good point! A carbon one would be a nice addition...

    Good point! A carbon one would be a nice addition to a go-fast boat!
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    Foot throttle control...DIYs vs. buy

    Anyone out there fabricates their own foot throttle control? Care to share your design, pictures and challenges.
  11. Replies
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    Got to know what the man runs before we can talk...

    Got to know what the man runs before we can talk setup mate. Maybe you wanna share with us how the weight distribution of your hull is setup :D?
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    Quty, what are you running in Malaysia.....great...

    Quty, what are you running in Malaysia.....great weather, fantastic food and long rivers there
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    Sounds like you are on the right track. Moving...

    Sounds like you are on the right track. Moving more weight forward, shifting the centre of presssure to the bow and with the S bottom, negating the lift a little at the bow. This should give you some...
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    Yeah, Hall Kelly's 3 point hydro Ben Hur has very...

    Yeah, Hall Kelly's 3 point hydro Ben Hur has very similar bottom profile as your hydro. Not as pronounce as Mark's tunnel but similar. Read somewhere this helps lower the pressure differential at the...
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    I like your sponson shape. It's different and you...

    I like your sponson shape. It's different and you are now changing the profile of your aerofoil. I guess to create more lift and move the center of pressure forward .....

    Are you tunnel side...
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    Mark you have a unique one-off design of your...

    Mark you have a unique one-off design of your tunnel. You have any pictures posted here in the forum?
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    I just might do that. My program is the 7.0...

    I just might do that. My program is the 7.0 verson which has very little data on Nissan/Tohatsu, thanks
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    Guys thanks. That is assuring. I have a dumb...

    Guys thanks. That is assuring.

    I have a dumb question. I am trying to run the aeromarine research tunnel hull program. I do not have my engine with me yet, it on order. Can anyone tell me the...
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    Mark with my Tohatsu M50D2 3 banger, what rev...

    Mark with my Tohatsu M50D2 3 banger, what rev would it do stock without exploding :D

    Guess Sport C runs the Tohatsu 40C which is a small simpler block....
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    noted....this is going to be fun. Will keep my...

    noted....this is going to be fun. Will keep my engine stock and see how far i can push the hull. Thanks guys
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    Mark do you have exhaust relief vents on your...

    Mark do you have exhaust relief vents on your lower unit? What other mods were done to get the engine howling at the rpm?? thanks
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    Yeah, absolutely right to have sufficient hose...

    Yeah, absolutely right to have sufficient hose slack to turn and tilt the outboard. A fancy alternative to the tell-tale stream is a cheap water pressure gause. :-)
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    Well I am thinking along the lines of off the...

    Well I am thinking along the lines of off the transom, a simple aluminium water pick-up welded to a bracket and connected to the flushing connector should do the trick. Seen that in the Formula Race...
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    Wow 7300!! That puts you close to 60mph.....how...

    Wow 7300!! That puts you close to 60mph.....how hard can you run the engine before it disintegrate?? At 7300rpm you are at least 25% above the recommended operating range!
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    Mark, what would your engine be running at ?...

    Mark, what would your engine be running at ? 6500rpm? Assume your rev limited is off.

    Steve, I am also toying around fitting a 50hp Tohatsu on a Dillon Pro tunnel (11' @ ~220lb). will probably...
  26. Aeromarine Research Tunnel Hull program

    Has anyone used this software and can someone help me understand the output and purpose of the 3 optimization modes; Optimize for Angle, Power and Velocity..... Thanks
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    Thanks, will then get a 0 - 30psi gauge..

    Thanks, will then get a 0 - 30psi gauge..
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    Water Pressure Gauge

    Folks how many pounds pressure would you typically see on the water pressure gauge of the tunnel hull with a jack plate ??
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