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Big Rigs, Multi axle, & Tracked Vehicles The place for "Semi" talk!
Tamiya and Wedico Tractor trailers!
Tamiya and other brand R/C Tanks and Tracked vehicles. And any vehicle with more than 2 axles; 6x6, 8x8, 10x10, etc!


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  #1  
Old 05-06-2013, 12:30 PM
ZoZa ZoZa is offline
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Default Tatra T813 8x8 TP version - 1:10

Hi

This is my second building, this truck will be a 8x8 prime mover. The scale is 1:10, so the truck will be about 860mm long. I think it's huge. I'm using only metal, all the parts are made by me except the tires, engine etc etc.. so the truck will be about 8-10kg.




my first truck - Unicat U500 disaster response vehicle:

http://www.scale4x4rc.org/forums/showthread.php?t=73463

and the trailer to my Tatra:

http://www.scale4x4rc.org/forums/sho...168#post994168

Last edited by ZoZa : 05-12-2014 at 01:10 PM.
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  #2  
Old 05-06-2013, 12:34 PM
ZoZa ZoZa is offline
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So this project is a test for me, I hope I can do this, I need a lot of time.. And a lot of this:



my favorite glue, of course Loctite:

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Old 05-06-2013, 12:36 PM
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Aluminium profils, and a little sheet for the leaf spring.



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Old 05-06-2013, 12:45 PM
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I'm using plastic rod ends. I hate the aluminium rod ends. They are used by the steering linkage. For the 2 front axle I will use only one servo with a linkage

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Old 05-06-2013, 12:47 PM
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I have the 9 tires from RC4WD. They are 2.2 tires. Diameter is 140mm

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Old 05-06-2013, 12:54 PM
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So lets build a Tatra

I'm starting with the rear end. The rear axle shafts:





They are 6mm steels.
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Old 05-06-2013, 12:57 PM
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And the housing for the shafts:



They are 14x1,5mm steel tubes with M14x1.
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Old 05-06-2013, 01:03 PM
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I'm building the original suspension, this is the Tatra's unique independent suspension system with the swing-axles. I love it. But this will be very costly...







(on the last picture is a Pinzgauer diff, but its the same too)
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Old 05-06-2013, 01:24 PM
ZoZa ZoZa is offline
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For a Tatra, you need a lot of bevel gears.. 4 piece for one axle, so 16 piece for a truck.. They are very costly, so now I have just for 2 axle. First the original bevel gears:


Last edited by ZoZa : 09-16-2013 at 03:21 PM.
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Old 05-06-2013, 01:25 PM
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and after a little modifications:



They have an M5 set screw and became a little thinner.
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Old 05-06-2013, 01:30 PM
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I have 18 piece of this bearings. They are 19x6x6mm. I'm using FAGs, it's about 15$ per piece.. So the cost are near by an SCX. They are used by the differentials and the tube-frame.

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Old 05-06-2013, 01:33 PM
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I have some laser-cutted parts for helping me. With this a can make all the holes at home with a standard cheap drill. They are 1mm stainless steel.
One for the rims, one for the hubs and one for the outer "C-hub"

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Old 05-06-2013, 01:36 PM
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Laser cutting is a relative cheap technology, so I want to design more parts with this technology.
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Old 05-06-2013, 01:39 PM
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This parts are the wheel hubs. They are made of steel, without the mounting holes, cause its cheaper without them, and I want use my laser-cutted gage





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Old 05-06-2013, 01:42 PM
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With this parts, now I can make a complete rear axle. The bearings in the axle are cheap 12x6x4mm bearings.



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