Carcharadon wrote:What I don't know is whether this diving effect persists once the sub (the Nautilus) is submerged. I think not. The reason being that there is resistance from the alligator eyes and the wheelhouse in general which would tend to overcome the downward effect once the entire submarine is underwater. Resistance at the alligator eyes would tend to raise the nose upward thus canceling the inherent tendency of the sub to submerge when on the surface. I just wish I had clearwater to observe this.
Captain Nemo wrote:Guys,
I think this "auto-diving" problem may be attributable to the weight / buoyancy / balance characteristics of R/C models which are primarily a relatively small WTC within a relatively large free-flooding hull.
My NAUTILUS MINISUB is pretty much all pressure hull, just about the way the real one would be. She's as stable as a pool table: no unruly tendencies whatsoever. To dive dynamically, I have to ballast down deep awash, run at top speed, and pitch the boat nose-down. Without flooding the forward tanks, she won't dive at all.
Once submerged and running, she's easy to level out and run straight and level.
Cut the power (when slightly buoyant and submerged dynamically) and she gradually cruises her way back to the surface in a level attitude.
Built with the pressure hull occupying the proper percentage of the exterior hull, and the Goff Disney design is a very honest boat with no surprises.At least, that's been my experience with it.
Try building a properly weighted "dry hull" R/C model and I believe you'll find she runs about like mine does.
Hope this helps.
Users browsing this forum: No registered users