Posted by Eldon (WA) on June 19, 2016 at 07:43:27 from (67.185.46.116):
In Reply to: Am I the stupid one?? posted by Eldon (WA) on June 17, 2016 at 23:17:04:
Quoting Removed, click Modern View to see
I've analyzed the rpm theory many times...and cut and rpm are different for each job. Typically the Bush Hog will cut best at 540, speeding it up often beats down the grass with too much air movement. I use a high suction blade and it does create a lot of dust in dry conditions. I started with a Deere MX8 and that was the worst cutting mower. It left the center high unless you were cutting just a couple inches off. Dealer said I was going too fast....BH has no problem at 5 mph. It is in the design....not all mowers are equal! As far as a 10', my theory is you will get the same poor cut as the compact tractor and 8 footer because you cannot get your rear tires out there where the blades will pick up the mashed grass.
My tractor is rated at 2000 rpm, with pto speed at 1625 so I have a lot of room to play with rpm. In heavy stuff, you are not going to get a clean cut anyway, so I will usually run 1800-1900 just to get the extra hp, but the fuel useage goes up also. That tough 14 acre field used close to 20 gallons in 8 hours. Thursday I was doing light cutting running around 1650 all day and used 8 gallons of fuel in 10 hours!
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