ballast tank equipped 1.25" SubDriver now in production

[RCSubGuy]

I have a 1.25” cylinder here I haven’t yet listed if anyone is interested.

Bob

[redboat219]

Something to put a 1.25 Subdriver in to.

[RCSubGuy]

Direct from the horse's mouth:

The 1.25" SD single-and dual-shaft motor bulkhead is the same unit. The difference is the provided astern-gear and shaft. I now provide the motor-bulkhead with the astern-gear-shaft with all 1.25" SD's.

Yes, all Dave's superb products are available through the Drydocks.

Bob

[txgrunner]

I read through this thread on the 1.25" OD subdriver with ballast tank. I saw your YouTube video and read your comments regarding a Trumpeter 1/144 scale Gato build using this subdriver (although crazygary opted against the ballast tank). I've tried going to www.sub-driver.com, but it forwards me to a website for mud-skipper. The Nautilus Drydocks shows a 1.25" sub-driver, but it is single shaft and doesn't include the ballast tank.

Do you know if a twin shaft 1.25" subdriver with ballast tank is still available? Are all the sub-drivers sold through Nautilus Drydocks now?

V/r
Brian

[He Who Shall Not Be Named]

Just found this thread. Wow. Nice work, Dave. Seriously.

Having said that, you are all masochists of the highest order. Why would anyone want a boat this small :)? My fingers ache just looking at this stuff and my eyeballs are twitching, too.

I suppose it would be fun running in your kitchen sink or perhaps your toilet bowl, but c'mon...

Bob
Big sub lover...

Bob, you resin slinging, screaming Hypocrite!!! I've seen your work!! You, you the King-of-stupidly-small-beautifully-crafted-detail Items!!


I don't hold a candle to your obsessively, crazy pursuit of detail in miniature. I'm the Gigantor to your Tom Thumb; the solar system to your atom; the ham-handed, drooling idiot to your craftsman ...

You not only deck out the wheelhouse, but you also slap down some tools and chart over the Navigators station on that Disney NAUTILUS.

Maniac!

Harrumph! And I hate you too, pal. The list is growing exponentially.

You people!

M

[RCSubGuy]

Just found this thread. Wow. Nice work, Dave. Seriously.

Having said that, you are all masochists of the highest order. Why would anyone want a boat this small :)? My fingers ache just looking at this stuff and my eyeballs are twitching, too.

I suppose it would be fun running in your kitchen sink or perhaps your toilet bowl, but c'mon...

Bob
Big sub lover...

[vital.spark]

Sorry for the late reply, computer problem! I actually have no desire to have the sub-driver as a dynamic diver, I already have one in the little Skipjack! I am referring to static diving only. I'm asking if David could make a bulkhead with 2 O-rings so that different length ballast tanks could be installed? This would mean that the sub-driver would have 3 seperate sections of lexan instead of 2. Tom and Manfred seem to have solved the probem of different lengths of wire for the different length ballast tanks.

[trout]

You would not need to de solder anything. The power end with the split cable, that can hold mini deans plugs or jst, wired identical so you could plug battery to either cable or pump power (ESC) to either cable, one or both. So when the ballast tank is not going to be used, the power connector on the servo side will still plug into the battery pack. So no soldering, you just plug the new module in and you are off and running.

[He Who Shall Not Be Named]

O.K. if you guys are simple, that makes me an amoeba. So here is my crayon drawing. I do this just for clarity.
[ATTACH=CONFIG]29206[/ATTACH]

With the extensions and pigtail end on the power, there is not much other than make the connectors.
Does this make sense?

You got it, Tom. That, and de-solder the power cable wires to the ESC. Not much of a one-time operation, but a pain if you try to make this one system alternatively operate as a static type one day, then as a dynamic type the next.

Very nice graphic by the way.

I'm skeptical about Scott Trosper's external run of servo and power leads. No problem with the power, but Kevin Rimrodt and I, years ago, tried running servo wires in the wet and the servos went nuts, even when we made absolute sure there was no water getting at the plugs. Not sure why, but we found the arrangement unworkable. Other than this observation, what Scott presents is a 'thinking-outside-the-box' exercise and an arrangement I had not considered.

Good stuff.

M

[trout]

O.K. if you guys are simple, that makes me an amoeba. So here is my crayon drawing. I do this just for clarity.


With the extensions and pigtail end on the power, there is not much other than make the connectors.
Does this make sense?

[He Who Shall Not Be Named]

David, believe me, it's all inside the brain, just ask, talking about dimension, the world is flat to me for my entire live, no 3D.

So, if i understand right, you simplyfied your design to this point, in my opinion less will give trouble, for now it's clear which wire is used for what, don't over-engineer things, keep it simple.


Manfred.

To be serious for a moment. I agree with you. Reduce the problem to the simplest of things that still works to a resolution. You and I are free-range practical mechanics with good hands; we're plodders.

KISS serves us well. The Eureka moments are for the Sheldon Cooper's of the world (God bless those Brainiac's -- one day they'll give us a sustained fusion reactor).

M

[MFR1964]

Half-blind and you turn out such work? Thanks for making me feel like a mental-defective.

I dismiss your accomplishment by simply saying you're a crazy man. To this day, studying your work, I still have a hard time seeing where everything goes and what it does. Your stuff is Heisenberg crazy; your work transcends Newtonian physics. Just what dimension have you jumped here from, anyway?

I hate you.

David, believe me, it's all inside the brain, just ask, talking about dimension, the world is flat to me for my entire live, no 3D.

So, if i understand right, you simplyfied your design to this point, in my opinion less will give trouble, for now it's clear which wire is used for what, don't over-engineer things, keep it simple.


Manfred.

[He Who Shall Not Be Named]

David

I can be blind (actually, i do have only one good working eye for real), but i only see a total of five wires running through the conduit, so what's the trouble about?, with the 212 i crammed so much wires in the conduit, that air had a difficult time to get through, enlighten me, please.

Manfred.

Half-blind and you turn out such work? Thanks for making me feel like a mental-defective.

I dismiss your accomplishment by simply saying you're a crazy man. To this day, studying your work, I still have a hard time seeing where everything goes and what it does. Your stuff is Heisenberg crazy; your work transcends Newtonian physics. Just what dimension have you jumped here from, anyway?

I hate you.

On a more serious note:

I'm using the standard servo lead gauge wire. I could go to the very small stuff for the servos. And maybe even two gauge size lower for the two power cables (I can almost see Andy cringe at that comment). But I try not to get too radical with my design here. After all, this is for general application -- I don't want to burden the eventual end-user by making him graft in non-standard wiring and such. Gotta keep this as generic (store bought, without modification) as possible.

M

[trout]

David and Myron,
Here is a drawing from Scott Trosper, he could not upload the photo. Here are his thoughts in a image:



My suggestion, the brass conduit will hold power from the battery, so it just needs a male and female end to correspond to the original sub-driver sections (think extension) and a splice for the pump power. The conduit would need a servo extension installed to control the pump.

[MFR1964]

David

I can be blind (actually, i do have only one good working eye for real), but i only see a total of five wires running through the conduit, so what's the trouble about?, with the 212 i crammed so much wires in the conduit, that air had a difficult time to get through, enlighten me, please.

Manfred.