Deboer Concept-2 Seaview subdriver

[Scott T]

An idea for fixing the backing and thrust problems on the Deboer Concept-2 Seaview subdriver; might be to add a flexible tube between the yoke-nozzle and the thruster assembly.
Cut a bicycle innertube to enclose the gap between the nozzle and the thruster.
This will direct all the water through the nozzle for forward thrust.
And probably keep the thruster from circulating water around the thruster body forcing more water out for reverse.

Scott T

[He Who Shall Not Be Named]

The 'flexible' tube between PJ and moving nozzle presents too much drag on the linkages. And I've already came up with a fix: I dumped the nozzle, and put the pump-jet to the gimbal -- much improving turning radius and pitch response.


The attached photos illustrate how my SEAVIEW propulsion-steering-pitching mechanism now works.


David,

[greenman407]

Onward ever onward!

[greenman407]

Dave, can you update us with some details? In the Gazette its obvious that your still working on it. Does she have a good turn of speed. Will it be able to maintain periscope depth?

[He Who Shall Not Be Named]

Get off my back!

What?! .... I don't have enough to do, what with the evil Caswell Empire keeping me snowed under in work, and you guys bothering me every five-seconds with questions and stuff!?....

(secure from morning rant)

Dennis' Concept-2 SEAVIEW, the one I've built up and recently got operating in pretty good form, is still in primer gray. But, I've finalized the design of the running gear and means by which the thing is pitched and yawed. I'm reasonably happy with the turning radius, and depth control is now assured, but something you have to stay ahead of in your mind.

Yes, Mark, with the sail planes active I can maintain good periscope depth up to a critical speed, then things get weird. Speed is fair, considering the relatively small PJ employed.

When I get to it I'll paint this thing as Dennis has done -- love his finishes. Here's a site where you can see his Concept-2 in the water and all dressed out: http://www.rcuniverse.com/forum/m_93...14/key_/tm.htm His work is simply magnificent. I hate him!

[greenman407]

Wow! Those are good! Look how high it sits in the water. Hurry up Dave, I think I want one.