About how fast (in RPMs) does the plow in the rotary spin?
I seen something on youtube about that same question. But I can not find it. 
Canadian Pacific built two rotaries in 1911 with heavy blades that turned at 400 rpm. I would guess newer models would have been 500 or 600 rpm.
Free wheeling or plowing snow? When plowing the speed is going to be a function of snow density and pushing speed. Both of which should be considered to keep the plow at or near max. rpms.
I was wondering top speed. I am working on a small project…
Try these links, they might help-
- The Rotary Snowplow - a Canadian Invention - quick overview with some historical photos.
- Rotary snowplow list - lists rotary plows in existence, some of which are still in use today.
- SP Rotary Snowplows - Many photos and details of rotaries that operate over Donner Pass in California.
- Rotary snowplow video at YouTube
ATSF/BNSF 199361 rated at 140RPM (rebuilt at Topeka shops w/ Cooke/Leslie components)
Hmm good to know, Thanks Guys! When my Project is done I will post photos…