Not a Clue
I sold a really nice Motobecane Grand Touring last night. It was the early 70's version with Stronglight 49D cranks, Suntour GT derailleurs, and other classic components. The buyer really had no clue. He wanted to know if it was a single speed or geared bike. I answered it was a ten speed, but that may not really mean anything to him. I am sure the bike will remain in the gear it is in when i sold it. I don't think the buyer even knows where the shift levers are, or what to do with them.
So, how much information do you give your buyers? I try to explain different aspects of the bike, but I know not much is getting through. I did mention that this type of bike shouldn't be ridden up and down curbs. That it is really lightweight and care should be used in riding it. But do I need to explain the gearing and how to shift? I showed him how the front wheel comes off, and to place the skewer lever along the fork blade when you close it. Again, how much of that will be retained is questionable.
Sometimes i have the patience to delve into all the mechanics of the bike. Other times, like last night(after a long workday) I just don't know what to say to someone that has no bike knowledge whatsoever. And if they don't ask questions, how much info and what sort of info do you volunteer?
How do you guys approach the selling of a bike? Especially when it comes to the 99% of buyers with no clue.