Sprouting Potato: 4wd Pusher

[voorsk]

Suspicious Houmous is a lifter, using a motor attached to arms via gears, and has a few issues..

To get it under 150g, I used 1mm polycarb throughout (the aluminium on top is purely decorative - it's a cut-up can of Guinness!), but it flexes badly when lifting, causing the gears to go out of alignment and the lifting arms to go floppy. Not ideal!

When it does lift, it pitches forward, which lifts its own wheels off of the ground. Also not ideal - it's supposed to be the other way around! Easily fixed by moving the front wheels right to the front.

The other issue is the ESC. I used a NanoTwo, as a DasMikro wouldn't fit, but between AWS and arriving home, something inside it broke. I don't have time to work out a solution (probably desolder the RX), but I do have a DasMikro in reserve. I just need to make it fit.

Here's what it looked like for AWS 55:



So, I need a new 1.5mm polycarb chassis (maybe even aluminium), I need to move the wheels forward (which might allow enough room for a DasMikro), and I might need to rethink the lifting mechanism if it's too heavy (a servo would be slightly lighter than the motor/Vex29 setup, but I dunno how to attach the gear, and it wouldn't be 360 degrees without modification)

What could go wrong?