Ha, it's not what ya think!! I'd be a dead man!! ;)
I got a new chain and a rear cassette put on last night.
Now this isn't the first time I've done this.
With my old bike it was twice a year, at least.
Now you have two ways to look at that.
1. I do shitty maintenance. Or
2. I ride a lot!
Well, I'm not the best at maintenance, but I do it. When ones cassette is shark toothed, and chain is stretched, that's riding a lot!!
I guess what I'm saying is, I've never noticed the difference in performance of the said work I got done more than on my Pugsley! On my other MTB it wasn't nearly as noticeable.
Everything is sooo much smoother and almost effortless; if that can be said about pushing the big tires of the Pugsley.
Anyway, keep the rubber side down, and Pedal On!!