simonineaston wrote:It can't be beyond the scope of something like a simple log book, can it? The laminated frontispiece simply states "I, the undersigned, wheel away the bike & ride it at my own risk." then get the owner to sign and print name... [pending advice from a suitable lawyer, that is]The modern bugbear of INSURANCE. Just in case something goes wrong or is claimed to have.
It would have no legal validity, and for very good reason. If someone were to 'fix' another person's bike and in so doing they made it dangerous to ride and the bike owner was seriously injured or killed as a result of that negligence or incompetence, it would obviously be wrong for the person responsible to be able to avoid civil liability on the grounds that the rider signed a waiver. In general such waivers can only have legal validity if they are for property damage/financial loss, i.e. not for injury or death.
If someone is not competent, they should not be working on other people's bikes. If they are negligent, they should take responsibility for their mistake.
As for the insurance aspect, if someone performs such work on another person's bike for payment then the general public liability cover part of their household contents insurance that they would otherwise be likely to be protected by, would probably not cover them, because the insurers would deem it undertaking a business. Obviously there is the potential for things not to be quite so black and white, and if someone fixed a friend's or neighbour's bike on a one-off or rare basis and received a pint or a bottle of wine as thanks, I would expect the insurers to have no issue with that. However, if they did so frequently then the insurers might view things differently.