Who wants to build a semi-scale all-wood micro hydro?

[Dr. Jet]

Fall of 1971 [Eeek]- Wurtsboro Airport upstate New York

All I can remember is that when the towline drops off the silence is mesmerizing......

It's quiet with a sports canopy?

I traded my trusty H-301 Libelle for the venerable 1-26.

[old guy]

I used to go gliding when I was younger its lots of fun nothing like it

[Dr. Jet]

Hey OG, have you started building your shovelnose?

[old guy]

Hey OG, have you started building your shovelnose?

No its still at my sisters place not sure when i will see it

[TonyRomano]

Video of the very first run of the Short Circuit Shovelnose. There was a lot of grass in the lake and I wound up towing a lot of it around.

https://www.youtube.com/watch?v=pUECqAqElt0

Looks “zippy”! Is the idea with that hull less drag? (Contact with water)


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[Dr. Jet]

Looks “zippy”! Is the idea with that hull less drag? (Contact with water)

That's the whole idea behind a 3-point hydro. The sponsons are just there to keep the hull level on the water. In a perfect world, only 1/2 of the prop would be in the water and the sponsons would "dance" on the surface just enough to keep things under control. The entire hull would ride on a cushion of air. It pretty much does that when running straight, but turning creates a lot of water drag. In the video, you can see it accelerate rapidly as it straightens out in the backstretch after turning.

The other idea with that hull is to make a semi-scale model of a full-sized boat.

[TonyRomano]

Thanks Dr. Jet!


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[Dr. Jet]

I still have a handful of kits available......

[trialsguy]

I still have a handful of kits available......

Which kits are available? And what does the kit include? Thanks!

[Dr. Jet]

I may have a couple of each (Atlas and Shovel) left. They include everything but a receiver, a battery, and finishing materials.

[Dr. Jet]

I managed to run the Atlas Prototype and the Short Circuit today. The Atlas was blistering fast with good handling. All it needs now is some fine-tuning on the setup and it will be done. This thing is great.

I also ran the Short Circuit. It wasn't quite as fast as the Atlas as I used different props on each of them, but it too had impeccable handling and can easily do full-throttle corners. It too only needs a dialed-in setup to be a champion.

[old guy]

next time you take them out take a video for us thanks now you have them set up

[Dr. Jet]

I tried to get a videographer last time out when I first arrived, but everybody was preoccupied with flying their float planes. I think they suspected another slow and boring boat. Once I ran the Atlas, there was some jaw-dropping and an attempt was made to take a video, but he couldn't get his camera to work. I plan to go out again on Monday, March 9th and there may be more incentive to video this time out and I'll have him use my cell phone to take vids.

[old guy]

thanks what prop did you run on the atlas and will you be trying it on the round nose

[Dr. Jet]

The first time I ran the Atlas at Santee, I used a plastic X430 that I had de-tongued and cut down to 28mm. It actually ran pretty good. When at my new pond, I tried a bigger prop, 32mm I think. Things got kinda hot, so I'll try a smaller prop next time around. I tried the Short Circuit on a beryllium X430 that was cut and de-tongued. It would cavitate if full power was applied at a low forward speed. If you gradually accelerated, it would finally hook up and run pretty good, but not nearly as fast as the Atlas. That prop was too small. Next time out, I'll try some cut and reduced X632s.

I'm talking with one of the CNC prop manufacturers about having some "Special" props made for some of the new top secret projects under research and development at "The Stinkbugworks" ; maybe one of them would work on this hull....