You should also consider the distinct possibilty that serrated augers are simply a fad, and serve no real useful purpose..
The snowblower was pretty much perfected by 1970..
since then, there has been no serious room for improvement to the basic design..
so, like any other product, you have to try to invent new ways to make your brand seem better, or more modern, than the competition, by adding little nick-knacks or gimmicks..
then, if people actually buy into your sales pitch, all your competitors must also add the same "improvement" and pretty soon all machines have the same completely unnecessary fad feature..
IMO, this is probably what serrated augers are..
snowblowers have been working perfectly fine without serrated augers for 40 years..
and yes, even with the serrated augers, most snowblowers probably cant handle much serious ice..they just arent designed for it..
so the serrated augers are probably, IMO, just for show..
a sales gimmick..
Scot
This message was modified Jan 30, 2010 by sscotsman