A New Sportsman Robot – The Verdict

With the first robot event announced and confirmed with only a short window to get it done, it was time to dig out some parts and get cracking.

I dug out the old Dewuts and BotBitz TZ85A controllers that were in the first version of Farmboy. This combo was good enough to win RoboWars Sportsmen 2013 in Sydney, maybe it can do it again!

Updating the gear selector on the Dewuts with my own design that cannot come loose.

Fitted and locked into mid gear.

Designed up a 3D printed mount for the TZ85’s so they can be mounted to the Dewuts directly.

Fitted and ready.

Adding the ESC itself.

The Brazil wheels I purchased in 2020 have an odd sized 15mm shaft which is hard to adapt to the 1/2″ Dewut shafts.
So I farmed out the machining to Demon Designs for a 20mm Hex into the wheel.

Then he machined up these adaptors for me.

Drilled and tapped some 3mm grub screws into it.

Bolted it all to a plank for initial testing.

And then we hit a problem… I had issues with the main door on my workshop and lost my entire xmas break off…. It was fixed 9 days before the event.
What I had designed and was prepared to build all went out the window and we started the rush build!
I bought a gas bottle from Bunnings, found an old winch motor setup with a brushless motor on it and decided to run with some form of hammer bot.

Marked the gas bottle with this simple method.

Followed by the cutting.

Marked for the next cut.

Pushed both halves together, it looks like a bot shell….

Added a few tack welds.

Started adding the first internals frame work. Just some basic 25x6mm mild steel.

Tested fitted the weapon motor setup.

Started mounting the drive motors.

And starting to add more bracing in.

Now to add the weapon slot into the chassis.

Getting closer.

A quick weigh of all the components as it is… Very close to the 13.6kg limit!

Some brand new batteries from Ovonic arrived, just in time!

Things from here were a blur, suddenly a lot of thing were done an no photos were taken…

But here we are, 13.50kg

One last beauty shot.

Next time, the event!