I have heard rumour that there is a "soil" drum and an "asphalt" drum for them but I have never seen or noticed any difference on the machines i have seen. However i noticed on a RS-600 there is no curb scratchers? Maby they had been burnt off?
Pulverizer drums are alot different than a typical milling drum, the most obvious differences are in the flighting. Flighting on the pulverizers I have seen have much longer shanks than the holder is welded/bolted too. I'll see if I can fish up some links to pages on the internet here, I've seen a few pictures from time to time.
here is a rs800
Keystones big easy drum for reclaimers
cmi rs 425
From the RS600 parts manual. There is 2 different cutter assemblies each with a unique part number. Whats the purpose of each? any ideas
2nd cutter assembly
Rs800