Here is a new article on taking care of your kart chain
Most people take their chain for granted and only replace them when they break, or they feel like they are ready to go. But when the chain is effectively THE transmission system for the kart it is crazy not to take extra special care of them.
Also, professional racers replace their chains constantly, both for reliability and because chain wear causes performance losses. And when you consider the costs of karting at a professional level changing the chain every day is quite a smart thing to do for a relatively small cost.
However if you follow the link to the article you will see how a club racer can extend the life of their kart chain and therefore save some dosh!
