On this thread there was some interest in the Kawada Sigma single belt car .The Japanese site was posted but you should try
www.kawadaracing.com is the U.S site for there distributor.Just wanted people to know.A friend of mine has a Sigma and he is very happy with it ,it's fast and durable as hell!I have a older Kawada alcyon 2 and i'am going to buy the Sigma soon!!
I know this is the losi thread but this is were the post was .