I always wondered why it didnt catch on since it had some very good points, that is beltless with no friction disk. people that have them love them. It may be because the bucket and size is small and the machine is only good for perhaps one purpose.......smaller areas;That was an early very simplified 2 speed 2 stage machine that used 1 control lever to work both the wheel/track drive and the auger assembly both at the same time with 1 lever with 2 cables connected to it. One was for the main clutch which was a mechanical oil bath motorcycle type multi disc, the other cable controlled an engagement dog that made the drive axle turn for the wheel/track.
It was a very simple set-up using no belts. It did use a small chain internally for the reverse of the drive transmission.
The wheel drive model used another drive chain to connect the main transmission to the wheel axle. The track drive model used a different output shaft that mounted the track drive sprockets directly to the output shaft that came out of both sides of the main transmission, the wheel drive output shaft only came out the 1 side, the other side was capped off.
None of the drive system components were exposed externally, they were all enclosed in the transmission housing in an oil bath. The main clutch only had like 6 separate discs almost like a motorcycle clutch but it didn't use clutch holding springs. The control lever applied the closing force through a fork and throw out bearing to create engagement of it.
The whole machine was a small unit that was good for tight areas but it didn't have quite the speed adjustments with it, it only had 2 speeds, which was either too fast or too slow, plus reverse, and wasn't designed for deep heavy snow, it was a small light weight machine that didn't take up a lot of room.
It wasn't a popular machine either. The 522 model was available in both wheel and track drive. The later 622 model was available only in track drive, it had a 1 horsepower larger engine on it and a few cosmetic and minor changes to it. That model was not a popular model either and was discontinued.
Both of those models were designed to compete with single stage non self propelled machines, but they were 2 stage and self propelled and a little bit more expensive.
At the time they were out, about the only problems we had with them was a broken shear bolt. They didn't have belts to wear out or friction discs to wear out. If they ever wore out their main clutch, they were very easy to replace, but we never had any wear them out at the time.
Some people are having oil seal leaks on them now, but look at how old they are now, they haven't been made in years now and are an old model.
The transmissions were very easy to work on if they ever had to be opened up. They were just a small simple machine designed for lighter snows.