The SAAF Forum
http://www.saairforce.co.za/forum/

RC Tank Built From Scratch 1:12 scale
http://www.saairforce.co.za/forum/viewtopic.php?f=24&t=6270
Page 1 of 2

Author:  Hein223 [ 31 May 2013, 22:17 ]
Post subject:  RC Tank Built From Scratch 1:12 scale

Hello everyone, I don't know if this is completely appropriate for the SAAF Forum, but it has to do with model building!! And everyone here loves it!


Here you will find the whole building process of my RC tank, where it began as an idea to sheets of plywood to a fully functional R/C tank. It took me about 6 months to complete, working on it whenever I got the time. Feel free to comment and ask questions!!


Here it is all finished Weight : 12.5 kg scale : 1/12


Image


The real deal.


Image


Where I got most of my measurements. Its an old War machine Magazine (War Machine Magazine No.1 Leopard Tank,Armed Forces of Oman,Tank Fire Control)


Image


Drawing everything to the right scale on the back of an old Ron Belling poster :smt023


Image


The rear drive-train of the tank. Two 12V cordless drill motors, each with their planetary gearbox. Angle grinder gears to deliver the power to the drive sprockets, which I machined on a lathe to press-fit into each other.


Image


Steel swingarms custom bent at an engineering shop. (I bent the first one myself to use as a sample)


Image


Plastic track pads, and chain track assembly. All the track pads where cut out with a jigsaw, and bolted together. A very, very, very tedious process .


Image

Image


Cutting my wheels on a lathe. I enjoyed working on the lathe a lot, but after wheel number 16 I was happy to be finished.


Image

Image

Image


Each wheel has two ball bearings, press fitted into the bearing cavity with a spacer in between. The bearings are held on the shaft by using a punch to make a small indentation right next to it, due to the fine tolerances of the bearings, they wont go anywhere. The tank has a total of 36 ball bearings, they where quite expensive due to the odd size I used.


Image

Image


Turret and upper hull, all constructed out of model grade plywood 5mm and 3mm. Cardboard templates where first made for all the panels, to get the fit just right.


Image

Image

Image

Image

Image

Image

Image

Image


The 2 drill trigger speed controllers with reverse, operated with servos. It took me a while to figure out how to build the cam and lever mechanism :?: :?: :idea: :mrgreen: .


Image


I have put in a monster of a battery, this means I can fool around much longer, and it gives my tank some weight, improving traction. Its a 7 amp-hour Pb-acid alarm battery


Image


Pull spring & lever suspension system working nicely.


Image

Image

Image

Image

More posts coming shortly :smt023

Author:  T. van Vuuren [ 01 Jun 2013, 09:20 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

:smt023 =D> =D>

Author:  vlamgat16 [ 01 Jun 2013, 10:44 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Wow!!! That is some superb work Hein! =D>

I see a picture of a Sherman in one of your photos.....that your next build!! :D

Author:  Hein223 [ 01 Jun 2013, 11:06 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Thanks guys :smt023

I have already built it vlamgat :wink: but its a smaller model, also not RC, just a wire control model.

Image

Author:  vlamgat16 [ 01 Jun 2013, 11:10 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Great job Hein - what scale is the Sherman?

And more targets for flying things!! :lol:

Author:  Hein223 [ 01 Jun 2013, 11:42 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

I approximate it to be around + - 1/16, have not yet done the math. I built the tank around the Tamiya twin gearbox :wink:

Author:  Roger the Dodger [ 01 Jun 2013, 11:50 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

IMHO Tanks at that size need a main gun that actually shoots - has anyone ever adapted an "Airsoft" gun into a model?

Author:  Hein223 [ 01 Jun 2013, 12:15 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Yes Roger, will agree with you on that one. My tank with the receiver, 2 servo's and battery-pack, all in the turret, left no space for a paintball or airsoft setup. And a paintball was out of question from the start, because the barrel would be out of scale :wink: . It is the question everyone asks... "does it really shoot"

Author:  Drifter [ 01 Jun 2013, 12:45 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

EPIC Build Hein. You have real skills.

Author:  Hein223 [ 01 Jun 2013, 14:06 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Testing all the systems, speed controllers, barrel levitation, turret rotation, and motor cooling.


Image


Final hand-painting of the decals and other detail 8) .


Image

Image

!!FINISHED!!
To give you an idea of it's size. :mrgreen: (just right)
:mrgreen:


Image

Image

Image

Image


Now to begin the "weathering"


Image

Image

Image

Image

Image

Author:  Hein223 [ 01 Jun 2013, 14:21 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

View the videos of my tank here. :smt023

http://www.youtube.com/watch?feature=pl ... YOaO4j3YYo

http://www.youtube.com/watch?feature=pl ... PPYalua5BE

http://www.youtube.com/watch?feature=pl ... -4CtYga8n8

Author:  Drifter [ 01 Jun 2013, 15:53 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Frikking amazing.... :shock: :shock: :shock: :shock: :shock:

Author:  Hein223 [ 01 Jun 2013, 18:55 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Thanks Drifter :D

A photo showing the top view of the battery, motors and drive train, speed controllers and servos and all the wiring. :mrgreen: (only one track installed)


Image

Author:  Roger the Dodger [ 02 Jun 2013, 09:39 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

Love the Weathering technique! \:D/ \:D/ \:D/

Author:  Hein223 [ 02 Jun 2013, 16:02 ]
Post subject:  Re: RC Tank Built From Scratch 1:12 scale

And it was a lot of fun! :mrgreen:

Page 1 of 2 All times are UTC + 2 hours
Powered by phpBB® Forum Software © phpBB Group
https://www.phpbb.com/