I just joined and figured I'd post in this thread first.

Lots of awesome bikes here, but it looks like there aren't too many full-rigid mountain bikes left. But that's what I have and here it is:
Good old double butted True Temper steel, Deore LX shifters, hubs, and cranks, XT front derailleur, Exage (1993 vintage) rear derailleur, Mavic 217 rims, cheap alloy stem and seatpost, etc. Last time I weighed it I had some street tires on it and it was around 24 pounds. Right now it has an Onza Rail folding front tire and some generic and very heavy Trek tire on the rear from 1994.

I also noticed today that my right bar end is split right down the center.

Does titanium become brittle with age?