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Round Nose Hydro

Old 02-04-2008, 05:59 AM
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Rowboat
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Default Round Nose Hydro

Hello again, It’s been a while since I have last posted.
I just thought that I would share a short vid with you all.
The vid is of my Round Nose Hydro not the Miss Take version although very similar. It’s my own version.
It is of fiber glass over balsa wood construction. It measures about 600mm long x 300mmwide at the widest point. Its RTR weight is 2.1 Kgs. The power comes from an OS .25 standard engine.

The basic design package is steered by an air rudder; I later added two more air rudders to try to keep her running in a straight line. You see after about 35Kph she is hard to keep in a straight line, the front sponsons can dig in and spin her around. I later added a small thin keel at the stern. This made here a lot easy to control and kept her in a straight line long enough to reach speeds up to 47Kph. Once you have learnt her turning secrets the boat will easily run around at 40Kph with no problems. I am realy happy with this boats performance, and I know that I can improve on speed and handling. Mark II is on the way.
Hope that you enjoy the vid.

[link=http://www.youtube.com/watch?v=CVMwoYswRHc]Round Nose Hydro from the Start to the End[/link]
Old 02-04-2008, 03:36 PM
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D Bronk
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Default RE: Round Nose Hydro

Nice.. up untill the Boat ran off the Screen and made that Thud when it hit the Tree..Looks like you have it running very nicely though..Not much Snow where your at, Though.
Old 02-04-2008, 10:18 PM
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jasperrc
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Default RE: Round Nose Hydro

Great vid Rowboat and awesome job on the build!
Old 02-05-2008, 01:35 AM
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Rowboat
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Default RE: Round Nose Hydro

Thanks guys , No not much snow here , just some ice in the fridge.
Old 02-06-2008, 05:39 PM
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SFGuy
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Default RE: Round Nose Hydro

Hey rowboat, nice boat. Its almost exactly the size of mine. I just hope mine doesnt weigh as much as yours (4 1/2 pounds, wow). As you asked in my thread, no I haven't water tested it yet. I still have to cover the back of the hull. Is your prop wider then the hull? If so by how much?
Old 02-10-2008, 04:15 AM
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Default RE: Round Nose Hydro

Is your prop wider then the hull? If so by how much?
No the prop is not wider than the hull, It might look like it . It is 1 1/2 inches from tip of prop to edge of hull.
4 1/2 pounds sounds heavy but it is the fiber glass that adds the weight . You need some weight to help with stablizing when running at high speeds. The glass helps with thoes high speed bumps or crashes. Believe me this boat when at speed looks very light on the water, it dances accross the top of the wind chop waves.
Old 02-10-2008, 06:06 PM
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Default RE: Round Nose Hydro

where did you get those plans
Old 02-11-2008, 12:01 AM
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Default RE: Round Nose Hydro

The plans are from a full size boat. I just scaled them down and made a few changes.

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