All those piglets are a huge combination of McDon-.. I mean, weight. There is a motor (I forget the name and I am too lazy to boot up DSL right now, sloth sin FTW!) But, anyways, the motor can be choosen with a longer shaft and you can attach two sawblades on it. I think this will save you a bit of weight to play around with other options.
For sloth I think it is too reliant on wedges for the weapon to work. I would lower the weapon height. Also JD was refering to the magmotor LX.
ALERT- Another WS coming up...
I'm fine with hugging reier
@JD: Yeah but the longer axle ones are drive motors, thus slower and reduce damage unfortunately. :/
Sick. You should enter that in RIP 2.
Like Joy Ride is good :P (It's a cool design, but fails on one wheel. Don't know why)Also it looks quite good, but why Gluttony ? Because it "eats" bots away with "teeth" ?