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10' Disc Blade Size?

C

charles todd

Well-known Member
I have a 10' disc, Massey Ferguson. It has 18" fairly new notched blades on the front and worn blades on the rear. I measured the rear, round blades with hard surface welding on them and they measure about 18". Should I replace the rear blades with notched 18" or 20" disc blades? I want notched because I am discing new ground with trash in it and want to chop/turn it over. I have noticed that the smooth blades tend to cut into and bind up on sticks and roots that the notched blades do not.

Help appreciated,

CT
 
I believe 20's will fit, but I did not know about mixing sizes. Makes sense to rotate the front blades to the rear and put the newest on the front gangs.

CT
 
You usually just had the notched blades on the front. Then smooth on the rear gang. The notches do two things: 1) Makes the gang turn over trash better. They will not push the trash in front of the blades like smooth ones do. 2) The notched blades will penetrate hard ground better. You have more weight on a smaller ares on the edge of the blade. Draw back is that notched blades wear faster, less steel on the wear edge.
 
I am thinking of going notched on the rear for the chopping action. I have 50 acres that I had the timber harvested off of and had dozers pile and a trackhoe dig up the stumps. I have been using the disc to chop and level the ground and to fill in stump holes. I'm dragging about a 12' length of railroad rail iron behind the disc to smooth the clumps. I have cleaned most of the larger surface trash up with a landscape rake, but the pieces in the ground tend to stick to the round blades more than the notched. Maybe I need to build blade scrappers to knock the debris off the blades?

CT
 
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