All the photos and informatio below are courtesy of Bob Mackin.


Bob on his 73 at some grass drags.


Jim Adema at Ironwood


Jim Fonger on his 72 Tjet. It's actually a 2 year old machine and he still beat the factory Yamaha guys.


Jim Fonger in 73 on a 72 tjet.


Kawartha Cup 1973


The 74 Thunder Jet driven by Bill Yobe, it was pushing 125hp, and need the really aggressive hood scoop to cool the sled. Everyone laughed at him, but he turned around and beat them all.


Bob Mackin on the incredible Thunder Jet II protoype.


Gene Bloom on his Rupp.


Factory Yamaha Sled


The Rupp Super Sno-Sport


Dual Engine Polaris


Dual Engine Ski-Doo


Snow Pony Peroxide Rocket