Pitch Controllers

[junglelord]

Is there a preference out there?



thanks for any help.
Cheers

[boss subfixer]

Do you mean, to have

Do you mean, to have one or not or are you asking about the different manufactured units? Could get you better answers.

[junglelord]

Well I mean in the

Well I mean in the most up to date units.
I have read about older units having sensors that dry up over time.
I also believe that the newest units have no issues like that.

Just wondered is there any prefrence, or are the majority equal, just pick the one you want?

Not trying to start a distributor war or nothing....so if its a problem, I understand.

Actually found an old question I had over pitch controllers and auto depth units.

http://www.rcgroups.com/forums/showthread.php?t=345890

I think I will check out the vendors page.

[davinci]

I have a leveler/failsafe circuit

I have a leveler/failsafe circuit in one of my subs and it does what it's supposed to, but I've not got them for the 3 latest sub projects, and I doubt that I will.
If the model is trimed close to neutral-bouyancy, which all mine will be from now on, I don't really Need a auto leveler for dynamic dives.
The more electronics you put in the more that can fail or confuse the models operation.
But if you are building a Static dive model then the leveler Will come in handy when operating in deep or murky water.
I deffinitely suggest using a Failsafe circuit on the Gas-Blow servo tho.
That is a necessity. The failsafes are much easier to find at a lower price, than the units that do both functions.

[Guest]

The older levellers used to

The older levellers used to use a fluid tilt sensor, some of these used to degrade overtime.

All the modern units use solid state accelerometers, which are maintenance free, and are also much more compact.

Most of the levellers operate on a similar basis, there is some difference in the way manual controls initiated.

The newer solid state devices are a big leap in terms of technology over the older fluid based models.

[redboat219]

I posted a question regarding

I posted a question regarding if you really need to install a pitch controller all of them answered you need one. Yet I see videos of subs without PCs moving along just fine ( and quite faster than a snail ).

[Guest]

It's possible to run a

It's possible to run a boat without a leveller, just like it's possible to fly a model helicopter without a gyro.

However, running a boat with a leveller is a much more pleasant experience than without. Plus these days, levellers are quite inexpensive items and compact enough to fit in all but the smallest of models.

[davinci]

I posted a question regarding

I posted a question regarding if you really need to install a pitch controller all of them answered you need one. Yet I see videos of subs without PCs moving along just fine ( and quite faster than a snail ).

Many people don't realize the difference in a leveler/failsafe combination and a simple failsafe.
The failsafe IS needed, but not the leveler, for a sub that only does dynamic dives.

[Guest]

I'd say a leveller is

I'd say a leveller is more important for a dynamic diver- they tend to need extra speed to submerge and thus porpoising and over control are more likely.

[davinci]

I only need an auto

I only need an auto leveler when I can Not See how level it is.
And that's usually only when it goes deep, as in a static dive.
I really don't want them going out of sight. Too easy to loose it that way.
Of course I have to operate in lakes, not a lage pool where it would be easier to see or recover.

[Guest]

Quite the contrary in my

Quite the contrary in my experience - the value of a leveller is when near the surface.

[skip asay]

"Quite the contrary in my

"Quite the contrary in my experience - the value of a leveller is when near the surface."

And in my experience, as well.

There seem to be two schools of thought concerning just how a submarine is supposed to work. One is the "it's underwater - WOW! Now I'd better bring it back up". The result is a very quick 45 degree down angle followed by a foot or two of even keel running and then a 45 degree up angle back to the surface. Or maybe some time spent scraping along the bottom (that's one way to keep it level). That's fine, as far as it goes, but I find it leaves me wanting too much.

The second is a scale-like angle down by the bow until periscope depth is reached followed by an indeterminate amount of time MAINTAINING that periscope depth. And I'm talking many MINUTES at 'scope depth not just a few seconds. And then a slight bow up angle until fully surfaced.

Now it doesn't take a rocket scientist to figure out which one of these scenarios REQUIRES an auto leveller and which one doesn't.

In well over 35 years of playing with these things, I've yet to see a boat (that operates along the lines of option #2) that DOES NOT need a leveller.

Skip Asay

[Rogue Sub]

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[davinci]

I don't understand the Porpoise

I don't understand the Porpoise effect you guys are seeing, without a leveler. My sub without leveler has Not done that. It always runs straight and level, unless there are high waves and in waves it's already too late for a leveler to correct in one direction before it's time to correct back the other way, which makes it out of control.
I don't have as much control of my sub, with the leveler, and to me loss of full control is not good.

[Rogue Sub]

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