NH 918H.....Flail Mower

Tweeter

Member
My flail mower seems very loud when I am using it. The bearings and everything seem fine to me with no slop. I flipped the mower over and found a knife holder had lost both knifes that hang there. Could it be out of balance that it makes that much noise and shake everything? Also, the blades that are on in are probably 4-5" long. I have a bunch of shorter blades and would like to replace all of the blades with the smaller blades, 3".
 
Yes, it would not be good to keep using it like that or you will take out bearings. Usually just missing the odd knife isn't too bad but I'm not famaliar with NH flails. Longer knifes would make more of a difference though as they translate to a larger rotating diameter. I know on Mott/Alamo flails you have to keep the PTO speed up or the bend in the blades will actually move. One of those strange but true phenomonons. Dave
 

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