My inlaws have a ten-speed road bike that I hope to use for weekend rides when I visit. The bike is probably 30 years old, and probably hasn't been ridden for 20 years--it's probably spent that period in the garage, or in the basement.
My question: what do I have to do to get it ready for use?
First, should I presume that no tube or tire could last 20 years without degrading--should I definitely replace them?
Would the axles and cranks and other bearing locations necessarily need overhauls?
What else should I look at?