Monotheist

Heres another neat use for the Turnigy speed regulators. I have been working on how to incorporate gun recoil on my KT and was originally going to use a solenoid and spring setup but couldn't manage to get the amount of recoil throw needed so decided on a simple servo arrangement instead. Problem with this was how to make the initial recoil faster than the recovery time back to full barrel extension. So out came one of my trusty Turnigy regulators and a quick adjustment and presto!

Still have some fine tuning to go as the recoil throw is still a little short and a bit slow but a longer servo arm should take care of that. Anyway heres the results so far.







[youtube]http://www.youtube.com/watch?v=uwRAVhoYuFI[/youtube]

Flyn Chris

That looks great!

kclank

a very cool application

rivetcounter

I think I just wet myself[X(]

lthump

We will just have to keep trying to come up with our own recoil unit as no-one has an off the shelf version that I'm happy with , but thats bloody close .( Very Nice) First recoil needs to be very fast with no stop between it and slow return.

SNOWTANK

That's a great recoil .

RSEA

Looks good to me! Interesting...

Ahh, 1/8 scale... I thought that cannon rig looked quite big compared to the servo size lol.

rivetcounter

Have you got this recoil working in conjunction with the Benedini

fleshpedler

Neat idea, and a dam site cheaper than modding a tamiya unit ,certain worth looking at and yet another use for these great little units.........
Fleshy...................

Monotheist

Yes this config. is using the TBS5 and digital encoder. The main gun channel on the receiver is spit using a "Y" cable with one side going to a mini servo with activates a micro switch triggering the digital encoder for cannon sounds and the other is fed into the Turnigy which controls the recoil servo.

marshall

My Feedback: (5)

Monotheist, Your King looks great! I am in the middle of my own RC Armory KT. I was going to go with a coil actuated/ spring return recoil till I saw your excellent recoil action. Any chance of seeing a picture of the recoil unit from the other side? And are you using any type of bearing for the barrel to slid in? I have been looking into using a linear bearing on mine. Again, your King looks great! Paul

Monotheist

Thanks Marshall appologies for the delay. Be sure to post up pics of your tank as well as I would love to see it. Another mod you may be interested is adding wheel bearings which I also did so let me know if you need help there.

Anyway for the recoil this is how I did it.

Cut out a section of the pvc tube as shown below.





I fitted a 2 linear bearings into the first half of the tube. Unfortunately I couldnt find any that fit excacly so I picked up a pair of SW6 3/8" bearings that fit the inner alloy core but had to pack the pvc tube with apoxie sculpt and drill a correct diameter hole to insert the bearings into.





I then mounted an alloy bracket to the top to mount a servo which is connected to the alloy inner tube via a adjustible link.

marshall

My Feedback: (5)

Monotheist,
Thanks for the pics! Thats just what I needed. Have bearings on the way and am looking for a high torque servo (maybe a sail winch servo). Your Zimmerite looks great, I have been laying out weld locations so i'm at the crossroads on going zim or not. Paul

rivetcounter

A standard servo will suffice; a high torque servo is not really required with the weight of the main gun I use a standard servo on my 1/6 setup without any problems.

Zimmerit was discontinued in September 44 so if you are depicting a Tiger II from Normandy then it would have Zimmerit but if you are depicting a Tiger II from the Ardennes offensive then only 3-5 Tiger II from SS501 had this coating obviously latter in the war no new Tigers had it either

marshall

My Feedback: (5)

Rivetcounter, Thank you for the tip on the servo, saves me time and money. Paul

Monotheist

Yep agree with Rivet. Especially seeing these barrels are essentially plastic with an alloy core so are pretty light. A high speed servo would be more realistic in its recoil action I suppose but I just used one of my cheap and cheerful $10 servos I use in my rock crawler