New WTC From Bob Martin

[cgbillb]

I got my new 80 mm WTC from Bob today. And it is a wonderful piece of equipment.
Here is my question, has anyone one made up a schematic of how all it is wired together?
I am guessing that the air pump ESC will go to the left stick. Up you would pump air in, down you would pump air out.
Has anyone put one of the 80mm WTC into their sub yet?
I have gone thru most of Bob's video's and have not seen anything on to make all the connections.
Bill
Athens Ga.

[rwtdiver]

Hill Bill,

I have a 70 mm WTC coming from Bob. If the WTC unit did not come with a wiring schematic, maybe he will see this post and put up a wiring diagram here!? I am sure it would be helpful for all those that may be somewhat new to the hobby!

Rob
"Firemen can stand the heat"

[redboat219]

R & R cylinders employ a water pump.

[neitosub]

Hey guys,

If this system is like other pump-based systems, the wiring between the main drive motors and servos should be the same as any other RC-sub. In other words, the motors can be either wired in parallel or series and then connected to an ESC, or each motor can be connected to its own ESC and the two ESCs then connected to the receiver and main battery. If you plan on using a servo to activate the pump motor, then you would need to use a micro switch connected between the pump and the main battery.

Nate

[rwtdiver]

Nate & Bill,

If you look at Bob's YouTube that explains the 80 mm and the 70 mm WTC operation, he states that you need 2 ESC's one for the drive motor, and one for the pump motor!? I ordered 2 of the 10 Mini ESC's For my 70 mm WTC. One goes to the RX for your propulsion (throttle) system, and the other to your RX for the (water in & out) pump control.

Rob
"Firemen can stand the heat"

[neitosub]

Rob,

That’s correct as well! You can use a second ESC to run the pump if you want bidirectional and proportional control on the ballast pump. Two micro-switches can also run the pump bi-directionality but without proportional control, and you would need a servo to activate the switches.

Nate

[cgbillb]

Rob
Yes, I saw that but how do they wire in, left stick channel?
Bob YouTube is great for selling an 80 or 70mm WTC but not for installing one.
When I called him to order one, he did tell me that no paperwork would come with it.
That is why I was reaching out here.
Bill

[Monahan Steam Models]

Typical remote channel layout

Left stick up and down = forward/reverse
Left stick side to side = left/flood ballast tank, right blow ballast tank
Right stick up and down = bow planes dive or surface
Right stick side to side = move rudder left or right

5th or extra channel = stern planes manual or over ride( if using automatic pitch control) up or down

[wlambing]

Guys,

Just like in an OTW cylinder, you keep the pump on Channel 4 (left stick, horizontal) and the throttle stays on Channel 3. Pretty much the same as in any of our cylinders, using Channel 4 to run the Blow/Vent servo, only in this case we're pushing water. The Thunder Tiger Neptune works the same way. Power wiring should be pretty easy. Input tapped off the main battery, then the motor leads to the appropriate mover. Testing on the bench, with a water source to the pump should tell you if you have those leads hooked up correctly. Or, you can wait until sea trials and see how it plays then, making the correction upon retrieval, as may be required. Maybe as simple as reversing the servo input in the transmitter. Sometimes that doesn't work, though.

[rwtdiver]

Rob
Yes, I saw that but how do they wire in, left stick channel?
Bob YouTube is great for selling an 80 or 70mm WTC but not for installing one.
When I called him to order one, he did tell me that no paperwork would come with it.
That is why I was reaching out here.
Bill

Bill,

As for the wiring on the ESC, it is typical ESC wiring system as with airplane, or surface boat. I you are using the 10 Mini ESC that Bob (Nautilus Drydocks) sells, there is an instruction sheet with a wiring diagram that comes with the ESC. I hope the photo is OK! Might be of some use to you!



As to Transmitter function, Nick, and wlambing have it correct.

Rob
"Firemen can stand the heat"

[cgbillb]

Thanks guys it all helps
Bill
Athens Ga.
Home of the National Champion Bulldogs

[redboat219]

Got this from Bob Gaito

[rwtdiver]

Got this from Bob Gaito

Perfect!

Thanks to Bob Gaito for the diagram, and thanks to Romel for posting it!

Rob
"Firemen can stand the heat"

[RCSubGuy]

Original question seemed like less of a wiring theme and more of a setup theme. As others have posted, ballast in a 4 channel radio is typically channel 4 (left stick horizontal). If you have an open 3 position latching switch, that is ideal as it is full vent/neutral/full blow. ESC's don't so much care about the proportional voltage, but if you have a solenoid in your ballast setup, they like full voltage.

Bob