I always remove engine and electronics. Then I take the chassis outside and give it a good rinsing with the waterhose. Then blow the water off with the air compressor. Once dry spray the whole chassis with wd-40 and let it sit for 3-5 minutes. Then blow all the excess off with the air compressor. My rigs are always clean and never have maintenance related failures.
Here's a few shots to show what it looks like when I'm finished:
The first pic is where I forgot to blow the excess wd-40 off...lol
