What I've Been Up To Last Week

[Subculture]

I might be wrong, but that looks like PVA to me. Says on the datasheet it's vinyl based and emulsifies with water.

Deluxe materials 'fusion' is a good glue for sticking this kind of thing.

[He Who Shall Not Be Named]

I might be wrong, but that looks like PVA to me. Says on the datasheet it's vinyl based and emulsifies with water.

Deluxe materials 'fusion' is a good glue for sticking this kind of thing.

PVA? In that application? ... please, Andy. Give me a little credit.

David,

[He Who Shall Not Be Named]

Just got back from the local dive-shop training pool -- first 'open water' trials of the NAUTILUS. By and large, I'm very happy with the performance. Though 'collision speed' will always elude this model, depth control -- always the big issue with the Goff design -- was assured and quick. The turning radius sucked, but was acceptable. The model, surfaced and submerged, could cut a twenty-foot circle. The water was crystal clear and being an indoor pool was glass smooth. I'll bring the cameras tomorrow for the customer check-out session there and will share that here.

The model looks simply beautiful underwater going along at a fair clip without need of any practical horizontal control surfaces. It's official now: the two-axis gimbaled propeller makes it possible to operate a Goff NAUTILUS above and below the waves.

Damn, I'm good!

[Subculture]

PVA? In that application? ... please, Andy. Give me a little credit.

David,

But that Elmers carpenters wood glue you used for the clear ports is PVA.

I'm throughly confused now.....

[He Who Shall Not Be Named]

But that Elmers carpenters wood glue you used for the clear ports is PVA.

I'm throughly confused now.....

Ah ... I see the source of confusion here: PVA in my world is polyvinyl alcohol. When I read, PVA I think that. It's not that.

David,

STOP THE PRESSES!!!!

Andy was right, this is water-soluble glue, even when in the 'dry' state.

He worried me enough (Andy has yet to be wrong with his comments over the years, so his words weighed heavily on me) to test the glue: I took a drop of hardened glue off the spout of the applicator and dropped it into a little cup of water. In less than an hour it was reduced to a mushy consistency -- the water indeed did break down the hardened glue. I was wrong! Why didn't I just install a screen-door into the SubDriver while I was at it!? What the hell was I thinking there?

Damn you, Andy!!!!!!!!

(And thanks)

I've reapplied glue, this time CA, to the clear parts, after scraping away the white-glue residue.

David

[Bill Harris]

It may be a Britishism-- PVA may be polyvinyl alcohol to "us", but polyvinyl acetate (vinyl acetate polymer) to others.

I wondered about that. Periodically on my bottle of carpenter's glue the tip-nozzle periodically gums up and my cure for that is to unscrew it and pop it into a pan of hot water to loosen the glue.

You're a good Wiz, but we're fairly decent Munchkins... :wink:

--Bill

[He Who Shall Not Be Named]

Both PVA's obviously (now, to me) soluble in water once in the solid state.

And a tip of the hat to the Lolly-Pop guild members out there.

David,

[He Who Shall Not Be Named]

OK, lets see if this works. By the way, if these come out ... you're looking at my last chance to play with the little 31" Disney NAUTILUS before it was handed over to the client. These were taken this morning

[He Who Shall Not Be Named]

More filthy pictures.

[He Who Shall Not Be Named]

let's see if this works at all:

[Subculture]

Any video of it in action?

[He Who Shall Not Be Named]

Yes! On the day the customer came to take it we took the model to the local Diver training pool and I checked him out on it. While he drove it around I took some HD movies. Most of it good stuff, but no u/w, sorry about that. But, the pool was clear and no waves, so the view of the surfaced and submerged NAUTILUS are crystal clear.

I have to transfer the footage from the camera to a DVD, and send that to Mike for editing and posting to the forum and U-Tube. Film at eleven!

And thanks for that catch on the wrong glue I was using, Andy. I made the fix in time (CA).

David,

[Subculture]

Ah, great, anxious to see how well the beasty turns with the gimballed prop.

[RCSubGuy]

Damn! Dave, I just got around to checking the forums here for the first time in a long time and look what I've missed! Jeez.

I don't want to steal your show, but I had some comments:

If and when you tackle this again, I came up with a neat routing for the rudder linkages (see attached). You just use a replacement prop shroud support to run the linkage arm in. This hides the rod from casual observation quite nicely and just clears the outer edge of the prop.

I also used a razor saw to score the back edge of the stock rudder and press-fit a piece of clear plastic in there. I would estimate that the turning radius went from the aforementioned 25' down to about 7' (I was able to turn her in my 12' wide pool with room to spare). If it goes on display, you can easily just pull out the plastic and set it aside for pool operations.

I also found the best split was a single cut just forward of the prop shroud support arms. I used a tab in the rear and then used the ram to secure the front. No visible screws at all.

Great work on your buildup, man!

I'll have some pics of a big 66" static display in a few days. I'm just getting into it, but its going to have more features than you can ever dream of. Its a commissioned piece for a collector out of New York. I'm really excited about it.


Bob

https://www.rc-sub.com

https://www.nautilusdrydocks.com

[He Who Shall Not Be Named]

Bob,

That's great stuff, much appreciated. I learn from the Masters.

David,