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Discussion Forum

Sharper blades?

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Martin

06-08-2001 18:02:30




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My dad recently aquired a hevy duty 5 ft rotary mower. I have been very impressed with its ability to chop bush as thick as 2". However in knee deep grass it tends to bog down. I realize that the Super C is not real powerful but I was wondering how sharp the blades should be. They have been done on a grinder, but are not "razor" sharp. They are very thick and heavy, should I get some thinner one since grass is most of what I intend to cut? Any thing else I should know? Thanks for your help. -- Martin

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Robert in W. Mi.

06-11-2001 17:47:04




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 Re: sharper blades? in reply to Martin, 06-08-2001 18:02:30  
BB below has the right answer. I honestly can't see a lot of difference in how a rotary cutter cuts grass when i sharpen my blades, or leave them fairly dull. BUT, i'n not running my cutter with a low HP tractor either. As for grinding the blades. You can grind on them, just keep dipping them in a pail of water so they don't get hot. Take your time, and dip them OFTEN! Keep switiching them, let one cool in the pail as you grind a little on the other one. Robert

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Guy

06-09-2001 19:01:31




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 Re: sharper blades? in reply to Martin, 06-08-2001 18:02:30  
Use a hand file, if you heat up the blades on a grinder it weakens the steel. File it by hand and it will last a long time.



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bbott

06-08-2001 21:29:46




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 Re: sharper blades? in reply to Martin, 06-08-2001 18:02:30  
Sharp helps, but probably won't fix your power problem... neither will the thinner blades... (if you could get them)

Rotary mowing grass that deep, there's simply a whole lot of stuff flying around in the cutting chamber getting pulverized.

Here's a couple thoughts.

Do you have the mower set so that the front end (leading edge) is set lower than the back ?

This cuts the grass lower at the leading edge so the blade only hits 'once' rather than having the blade wack it again on the 'backside'. Also tends to let the cut grass clear out the back.

Also, some mowers have a removable side panel to let the grass eject.. this gets it clear so it's not being pluverized in there. dunno about yours.

Only other thing I can think of is to raise it up and make a couple passes.

bb

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