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watertight box v watertight cylinder...

R/C Submarine modelers

watertight box v watertight cylinder...

Postby U-33 » Fri Sep 26, 2008 12:11 pm

I’m wondering if any of you guys have built the Revell Gato with a watertight radio box and not a watertight cylinder? I mean a box similar to the one that the Robbe U-47 has?

I’m getting more than pi55ed off with trying to cram everything into a cylinder, it would be so much easier building everything into a full length, full width box…anybody used a box??

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Postby aquadeep » Fri Sep 26, 2008 1:10 pm

I have used a box in several subs but found that they are more of a hassle to open and to keep a seal and they dont take pressure well as the top and bottom large serfaces flex inward and distort the inner workings causing motor shaft alighnemnt to even cause a bind!.Yes more space but if your sub is round to start it just makes better sense to put a tube inside of a tube its tighter but beter pressure wise and the less air in the WTC means less over all lead to counter ballance,and dry wieght.
The Robbe line of subs use one of the best examples of a tube WTC that is easy to open and give great acsses along with extreamly deep capabilities,a box will not.
Robbe has several WTC that you can buy seperatly and cut there lenghts to fit! See website.

Just my opinion

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Postby U812 » Fri Sep 26, 2008 1:14 pm

:roll:
Last edited by U812 on Tue Oct 07, 2008 1:04 pm, edited 1 time in total.
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Postby cstranc » Sun Sep 28, 2008 8:23 pm

Surely there must be some hope for a non circular Plexiglas WTC?

There are various models that have the WTC actually integrated into the hull.

I am just about to re-do my WTC and I would hate to need a third attempt. My Sierra will have a main drive, two thruster pumps, torpedoes, lights, ... And I just think I will run out of space getting all these things out of the endcaps of a cylindrical WTC.
It's a great day for R/C sub building.
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Postby Rogue Sub » Sun Sep 28, 2008 8:37 pm

Make an auxiliaries wtc with a receiver on the same channel. Thats what I am going to have to do.
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Postby cstranc » Sun Oct 05, 2008 1:24 pm

Hmm. Two WTC. That could certainly ease the space issue.

I have been thinking about one long WTC that is 3.25" wide running most of the hull length, then having a ballast tank on each side. Just to be different.

On the WTC I would have several hatches. The design looks like:
Image
There is a base plate with a 1/16" groove routed in it. I put a bead of silicone into this groove. Then there is the top plate. I use 1/2" aluminum C channel to clamp the two pieces together and squeeze the silicone seal.

I like the idea of the aluminum C channel - nice even pressure on the seal, and it's easy to open / close.

Here is a prototype:
Image
When I am done there will be aluminum around all four sides.

When I was making the silicone seal I used two strips of brass to ensure I had the correct height of silicone.
Image

It sure looks like it has a good seal.

I keep re-reading Dave and Steve's comments and thinking "if they had trouble what are the chances this is going to work..."
It's a great day for R/C sub building.
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Postby Rogue Sub » Sun Oct 05, 2008 2:15 pm

One main ballast tank will make it much simpler to ballast. Two may be a headache for you.
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Postby kazzer » Wed Nov 12, 2008 12:39 am

cstranc wrote:Surely there must be some hope for a non circular Plexiglas WTC?

There are various models that have the WTC actually integrated into the hull.

I am just about to re-do my WTC and I would hate to need a third attempt. My Sierra will have a main drive, two thruster pumps, torpedoes, lights, ... And I just think I will run out of space getting all these things out of the endcaps of a cylindrical WTC.


It ain't broke! (Or for the purists of the English language, " It isn't broken!")

WTCs, a name coined by David Merriman, and his ultimate 'Sub-driver' have consistently outperformed the 'box'. It is almost extinct.
Last edited by kazzer on Wed Nov 12, 2008 10:45 pm, edited 1 time in total.
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Postby Art Broder » Wed Nov 12, 2008 9:25 pm

I'm a rather mild mannered senior citizen and a long time member of the SubCommittee, with member # 0060.
I didn't see anything wrong with Tony G.'s post that was removed. He was expressing an opinion that there were some biased inaccuracies in a prior post, if I am not mistaken. What was the censor's reason for removing his post?
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Postby Tony G. » Wed Nov 12, 2008 9:40 pm

Thank You Art.
Lets see how long it takes for this to be removed.
Tony G.
Last edited by Tony G. on Thu Nov 13, 2008 2:41 pm, edited 1 time in total.
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Postby raalst » Thu Nov 13, 2008 6:38 am

I did explain to Tony why I had to remove it.
By PM.
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Postby Tony G. » Thu Nov 13, 2008 8:55 am

Ron
Thanks for the PM I understand your reason for removing my post. I really didn't think it needed to be removed, I was just stating an opinion nothing more. I didn't direct my statment at anyone, I was stating a fact about incorrect information.
I hope I didn't hurt any ones feelings if so please except my apology.
It is over and done.
Thanks
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Postby Skip Asay » Fri Nov 14, 2008 5:42 pm

It truly saddens me to see where this website has gone. A post pulled because the word “bull” was used? Come on, let’s get real here folks. To see the world’s leading r/c submarine organization’s website become scared to death of anything that can be conceived as “inflammatory” is carrying political correctness to such a ridiculous degree is heart breaking, to say the least. And why is this happening? Because mike caswell decided that he didn’t want the truth to be known so he threatened to sue.....knowing full well that he couldn’t win in a court of law but knowing just as well that he COULD instill the fear of God. What have we come to?

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Sorry guys. For the first time ever, I've edited one of my posts.
Last edited by Skip Asay on Sat Nov 15, 2008 12:12 pm, edited 1 time in total.
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Postby Chuck Chesney » Fri Nov 14, 2008 8:42 pm

HEY SKIP...HEAR, HEAR. GOOD FOR YOU, WELL SAID. IF SOMEONE IS SO SENSITIVE THAT THEY ARE WILLING TO TRY TO SMOTHER THE FIRST AMENDMENT BECAUSE OF THE WORD "BULL", THEN THEY NEED SERIOUS PROFESSIONAL HELP, NOT A LAWYER.
SOMETIMES THE TRUTH MAY HURT, BUT GUTS ARE WHAT SEPARATE MEN FROM WORMS.
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Postby raalst » Sat Nov 15, 2008 5:59 am

OK guys,

I have spent enough freetime on this.

- If you have a problem with somebody, tell him offline.

- if you think I did some censoring you might be right but contact the person censored
before you THINK you know what is going on.
I always explain my actions to the poster

- If you want to show off your better world view and generally how this club
should be led,
I would like to draw your attention to some unfilled positions for volunteer work
in the SC, like moderators, presidents, article writers etc.
Oh yes, we just had quite a problem getting candidates for those in the upcoming
elections.

- If you have a problem with me, PM me or mail me at forum at subcommittee com
glad to explain things further.

Now, who has something to tell or show about model submarines ?
Regards,

Ronald van Aalst

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