Ed Huntress wrote:

Here's an early one from Modern Mechanix. No streamlining:


http://blog.modernmechanix.com/2006/12/05/motorcycle-engine-powers-high-speed-ice-zipper/?Qwd=./HowToBuildIt/1-1932/ice_zipper&Qif=ice_zipper_1.jpg&Qiv=thumbs&Qis=XL# qdig

Neat. Would love to ride one of those. Here are a few other interesting
links I found:
http://www.vintageprojects.com/go-ka...Snowmobile.pdf
http://www.oobject.com/category/snow...rough-history/

Chris