Posted by Hugh MacKay on October 03, 2009 at 17:40:19 from (209.226.247.167):
In Reply to: Disc on Super M posted by jeffalex2 on October 03, 2009 at 03:53:29:
Jeffalex: I have no idea where these guys get their disks. I had an 8' Cockshutt (28 - 16" blades) back in the early 60s and it could make my 300 sweat Had a newer 44 - 18" blade Cockshutt in the late 60s, and my 656D or 560D didn't exactly run away with it, then later a 88 - 20" blade Bush Hog that loaded a 1066.
Width of cut is quite meaningless, it's the size of blade that creates hp need. A 10' foot disk with 7.5" spacing has a few more blades than a 10" disk with 9" spacing. There are also disks out there with 7.5" on front and 9" behind. Another factor, worn blades require far less hp. It will surprise you how many folks have never used anything but well worn blades, they don't do much but will pull easy.
If you have good blades, 16" is going to take 1 hp per blade, 18" will take 1.25 hp per blade and 20" will take 1.5 hp per blade. Anyone who tells you he's pulling more than that has well worn blades, or he's full of what is being incorperated.
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