Fitting a Subtech ADC-1

[Guest]

Picked up a ADC-1 secondhand, new but unused. In the instructions it says to fit as close to the bow as possible. Is the reasoning for this that the bow is likely to be the point that hits the desired depth first? It's the only logical reason I can think of.

Andy

[bcliffe]

For the most part yes.

The

For the most part yes.

The ADC uses a pressure sensor feedback loop in order to "drive" the submarine to the desired depth.

Also the depth control is the function of the front dive planes. Ideally the ADC sensor is close to the front dive planes for optimal performance. At least I think that is what Skip had in mind when he created the ADC.

Cheers
BC

[skip asay]

"Is the reasoning for this

"Is the reasoning for this that the bow is likely to be the point that hits the desired depth first?"

True enough. As Ben noted, ADC-1 uses a pressure sensor to determine depth. Since the boat "steers" by moving the stern to point the boat in the desired direction, it follows that the ADC-1 should be as close as possible to the bow. In initial testing, I mounted one in a boat which could only accept it in the stern (of the WTC). While it worked to a degree, it porpoised a bit while the one I had mounted in the bow (in the WTC) in another boat worked flawlessly.

Skip Asay

[Wheelerdealer]

I guess the hose connected

I guess the hose connected to the water needs to be near the bow but the actual unit can be placed anywhere

[Guest]

I'd have thought so yes.

I'd have thought so yes. Air has very little inertia, so I'd be surprised if a longer hose made any difference to the operation of the unit.

I built a engine management system called Megasquirt. It uses a pressure sensor to measure the pressure inside the intake manifold. They carried out some experiments with different lengths of hose, taking it to extremes. It made no difference to the running of the engine.

Andy