Gun barrel stabilization...
 

Some of you know I am building a Leo 2HEL that I am going all out on. I am into the turret contruction and decided to do servo elevation and rotation via the TK22 and use a dual axis head and hold gyro that can be toggled on and off.

Some of you have done this and it does work after seeing some youtube vids. Tom Huggil comes to mind. Sorry if mispelled.

The servo elevation.. being that the stick returns to center, does the barrel always return to center or does the Tk22 and gyro override that ? Or does this need a standard heli stick on the controller to work?

What are some dual axis gyros that can control 2 servos to get the job done. I think some work better then others so I would like a little direction in the choice of gyro to buy.

Does the gyro mount in the turret or the hull ??

Thanks in advance !!

While not an exact answer to your question, I use the Tamiya gyro for the Tam Leo2.

The unit goes in the turret (same location as the gun barrel).

Servo with stick, gun stays, as the Tam T-06 detects pos stick or neg stick for elevation, not current position.

Not sure why you need two-axis gyro as vertical is the only detection needed (unless you plan on using IR tracking for turret rotation axis orienting).

Heli's need dual because of rolling, if a tank rolls you have bigger issues than orienting the gun!

This is an HL tank so staying away from the Tammy stuff. Dual axis for the elevation AND rotation. If I point the turret a certian direction, I kind of want it to stay there when I steer the hull around. It dont need to be precise but to keep the turret in the vicinity of where I leave it would be cool. With a head and hold gyro, the stabilizer system should be able to be toggled in and off via the Tx when I want to use it.

And yes, this is an IR battle tank and will be looking to do some damage at the NEAD battles, : D

Something like that exists:

http://youtu.be/h3Sey8_ZsF8

Not sure if you'd be able to get a 2 axis gyro to work both elevation and turret at the same time. you May have to go with 2 independent gyro's. I ditched the tammy gyro in my Leo2 and
use a r/c sub pitch gyro. They're plug and play, small, and in the same ball park as the tammy gyro price wise. They also have an adjustble pot for sensitivity.

http://www.engel-modellbau.eu/catalo...oducts_id=2555

Looks pretty interesting. That may be your best bet, wonder if it would be adaptable to work in conjunction with the tammy T-07?

THAT is the show right there ! I need to find out how that system operates.


Im pretty sure the units designed for airplane flight can stabilize both axis at the same time. Aileron and rudder for example.

I might try the Hobbyking RX3 unit. Its pretty cheap and can be switched on/off via aux. Switch on the Tx.

Got ya. Still not sure if the gyro is actually controlling both servo's in the case of Aileron/rudder or if the servo's have been mixed in the TX, so when one reacts on said channel so does the other.

Since the gyro works on gravity, not sure it would work for turret rotation. But it will for elevation keeping level but not tracking as if higher target than your tank.

There is a video somewhere of a Tiger with a tracking system, you may need a target 'sense' circuit and track servo setup.

Do all gyros work on gravity? I think the older piezo ? Ones do but not so much the case with newer state of the art stuff..

It it is gravity, how is the tail rotor in a heli and a rudder in a plane controlled? That has to be something other then gravity...

So.. that Leopard 1 up above. That is the 35rctank electronic system. I dont think that GSU will work with another board like the Clark. And it is not an IR capable system so if your looking for just sound and movement, that would be the hot ticket...

So we are back to the gyro system. I am looking at the Hobbyking RX3s. Its cheap but looks like it might do something. And, it can be switched on and off...

With a series of servo Y-splitters you can have both boards - run the GSU expressly for the turret and barrel stabilization and still get signals to the Clark board to handle the drivetrain (more importantly get speed reduction after taking damage). I haven't tried it, but it should work in theory.

Now see, Look how much fun modern tanks are. they do all kinds of neet tricks. think i will be doing this to my HE Abrams when i get my new TK22 board for it.

yup, agree. Only question is power and how it would handle lower voltage's taking hits?

Not sure if you can run the system components independently, seems you have to run the whole tank with that package, or al carte' to fit a non IR combat vehicle. Don't know off hand, but me thinks it could be wired into a HL system since every function is available by plug.

I fired off an email to 35rctank to find out about specifics of that system and how it works to see if it can be ran independant to control the turret functions. It looks like it might be possible to use the ACU and GSU units for just the turret. Just need to find out what the power and input signals are for it to work.

Ill let you guys know the response.

And it seems Clark is developing a dual axis unit. That might be worth waiting for. I posted in the Clark thread about it.

Sounds like an interesting system, look forward to 35rctank / Clark options details.

Kinda like autoaim in WOT LOL

Yea, its only downside is that its not IR battle capable. I am almost tempted to get the 35rctank system just to play with. After all.. I have more tank builds in my future so I will have something to install it in. I might even get that with the Abrams sound and have that for when I build the Abrams. Ahhhh...so many options...LOL

I'm not a tank person but I still like to read the articles on the popular now list. I just recently picked up an EagleTree Systems Guardian Stabalizer. Their 3D heading hold sounds like it is exactly what you want. It holds the last attitude the unit was placed into. It would be an interesting adaptation of a control system designed for aircraft use.

Gyros don;t work on gravity. They work on angular momentum and forces applied to change it's direction.

Thank you for chiming in! That little thing looks like it just might do it and do it well at that!

If it does what I think it will do it will even handle the situation where you drive your tank up on one track which would introduce both elevation and rotation. There is a lot of info on this device on that other site not to be named.
Tell you what. If you get it and it doesn't do what you want I'll take it off your hands.:)

Wow, thats a solid offer.. its on ebay for 65 shipped. If it doesnt work for me, is that what you will pay?

Mcm don't get the eagle tree or any other heli gyro. Here's why, if you tank moves so the elevation servo can't keep the barrel level the gyro gets confused and doesn't centre properly. Also if your movement is very slow then they struggle to pick it up. However I have a sub with an auto leveller and this seems to work much better, it works when the sub is stationary and always centres properly. A decent pitch controller costs about £50 (check out the AL5). I've been through trying serveral heli gyros and found none I was happy with.