I've thought about the RC snowblower, but I'm looking for something simpler to start with - that might wind up in a later version of this.
All of you have given me more to think about on this - and thank you for the link, that'll be a good place for me to begin this.
First of all - this is for a one-off project, not a production. I'm building a remote-control plow robot, based on COTS electric wheelchair parts. The plow should be able to shovel snow, yet be simple to operate. I'm thinking of using a four-bar linkage to:
lift the shovel blade upwards at...