Do they take them out and fire them up now and then?
Most very likely No! They are usually crammed in some out of the way spot gathering dust and dead blowflys. Personally I hate seeing WASTED racing bikes just stagnant and rotting away in museums. One $15 dollar entrance fee would buy enough fuel to start 5 bikes at least once a year. Might as well be in a landfill at least they will once more get to feel the dirt. If they do not do anything but sit there ,they are not in museums they are in mausoleums. Tim754