In 1931 he introduced a new sled with tempered steel runners , and his sled designs dominated the sport for the next 20 years .
Switzerland 's Fritz Feierabend was one of bobsledding 's most important racers and innovators .
In 1931 Fritz Feierabend introduced a new sled with tempered steel runners , and Fritz Feierabend 's sled designs dominated the sport for the next 20 years .
Switzerland 's Fritz Feierabend was one of bobsledding 's most important racers and innovators .