Re: Liability issues
You'd be well advised to seek some legal advice before attempting to build a bike for a give-away venture. Just telling someone that you're not responsible, or even having them sign a release might not be enough to protect you in the event someone gets hurt. Just ask the people with fenced in swimming pools with signs that say "Keep Out" how well they were protected when an injury occured in their pool by someone who wasn't supposed to be in it. There's always a lawyer out there who will try to prove negligence and you could well be in his sights. Be very careful with this idea, sir.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"