Our group has just started a campaign of Clockwork and Chivalry. We're having a great time with it. Great setting, loving the alternate history magic systems and its an excellent interpretation of the D100 system. There's just enough crunch to make some interesting combat decisions and the skill rules get out of the way of the RP.
I can't afford the full blown rules for C&C at the moment, but I highly recommend these free rules. There's a ton of content here, basically all the rules you need short of the proper background to the game. There's a decent set of magic rules which are only missing the clockwork stuff.
This is a great resource for free, hats off to Messrs Cakebread and Walton. I will be buying the full rules as soon as the bank manager lets me.
[5 of 5 Stars!]