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CHASSIS FRAME

A project log for 350KG RC TANK - PROGRAM : CHAROGNARD

Design and construction of a 350KG (700lbs) RC TANK, from scratch

rc-ordnanceRC ORDNANCE 05/16/2020 at 19:180 Comments

GETTING THE RIGHT FRAME OF MIND


SUMMARY

Building the frame wasn't that hard, but much, much longer than I expected. I had to drill several hundreds of holes. I also had to be very patient and very cautious with positioning and maintaining the profils while welding. Since I am no professional welder, I had to improve some weldings after the polishing step revealed weaknesses. The most difficult part was to cut and weld the angled profiles properly.

From CAD...

... to reality

CONSTRUCTION

At first I made the frame in 2 parts : top and bottom


And it was a bad idea :

MUCH BETTER !



profil welding. I also Riveted a lot of nuts for potential mountings interfaces


The bottom plate will be fixed to the chassis by these nuts

Here we see the plate's nut inside the frame's hole

welding of the screws for engine mounts

Bottom plate

Core of the frame assembled with gearbox Mk1, and engine... So far so good!

Still got a lot of work...

Front sections

These front sections were very long to cut and assemble, because of the tricky angles

FRONT VIEW

Front view


Then i welded the left and right wings + turret mounting + rear section :

the pallets are 1m20*0.8m

After a few improvements on the fly, the frame is now complete. I then added a rust protection coating on every single surfaces. Just like real tanks, this one will have a long, and rough life. Let's protect it from the start.

Upside down view

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