::Good example is the wankel engine that was invented in 1929 but virtually= =20 ::was abandoned till recently, when Mazda RX8 made it successful The Wartburg (Czech I think) used the Wankel engine in the early 70's, our= =20 neighbour had one. Colin -- cdb, colin@btech-online.co.uk on 7/02/2011 =20 Web presence: www.btech-online.co.uk =20 =20 Hosted by: www.justhost.com.au =20 =20 =20 =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .