Exposure 2.0

This post will document our progress on the second major version of Exposure.


Main Upgrades:

  • Custom 1806 conversion drive
  • 3D printed chassis
  • 4s battery
  • Cast polyurethane wheels
  • Double supported weapon motor
  • Invertibility 'horns'
  • Threaded inserts and bolts
  • Less range of motion on the forks

 The first thing to do was design the new parts. After a lot of CAD work, this is what it looks like:









The anti-horizontal setup has changed to be a single piece TPU wedge with much thicker walls and a shallower angle.










The old 22mm brushed motors have been swapped out for 2500kv 1806 brushless motors connected to 19:1 planetary gearboxes. These are powered by BBB AM32 drive ESCs. The new, longer forks have a slotted hole in front of the pivot hole to limit how far they can move up and down. All fasteners on the robot have changed from woodscrews to M4 bolts with threaded inserts, and the wheelguards are held on by M5 bolts and T-nuts reverse mounted in the chassis.

The weapon system is very similar to before, the only change being the motor is now double supported to combat the flex in the chassis.

Our new wheels are 40a polyurethane cast around TPU hubs. These are a larger diameter to hopefully stop us getting stuck on the floor.

We are also planning to get a 2mm aluminium lid with an extra top armour option to protect as well as possible against hammersaws and axes.

I will update later when the metal has arrived.

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