Help with top link adjustment for rotary cutter.

   / Help with top link adjustment for rotary cutter. #181  
I'll try to address all the issues at once.

The belt twist in normal for the Woods RM306. It does a 360 at that point. You'd think it would be a problem or cause excess wear, but I changed the belt for the first time last year after 29 years of operation on the original, and it still was good but had worn such that it was sitting too low in the pulleys and I was getting some slippage.

The top link on my RM306 was set a little long in the picture, so it probably would limit motion in the case of assending from a steep valley, but I don't have any so I usually have it set that way so the back end doesn't lift up when going over hills/ridges. A little longer toggle would have been better and I've toyed with making one, but just haven't found it all that necessary.

The chains, at least for me, have nothing to do with weak hydraulics or saving the cylinders some beating, but I guess it could. I use the chains for two basic reasons: 1) The deck is always set at the exact same height. I never have to look back or make adjustments. If I raise it up for some reason, when I'm done, I just lower the control lever all the way and it returns to the exact same position - really nice! 2) I think the chains are even a better way of supporting the front of the deck (mower or rotary cutter) than front caster wheels would be, and far and above using the 3-pt lower links. I say this because with casters out front, the deck would bounce much more as the little (approx 8"-10") wheels roll along over every little bump. (Have you ever taken your riding mover or garden tractor into rough terrain - if so you'll know what I mean!) Also, the chains are superior to the 3-pt because they establish the support at the tractor rear wheels, not ~3 ft out, where every dip or rise of the front of the tractor causes a correponding opposite reaction on the lower links. Yes the front of the deck will ride with the rear tractor tires, but heck, those tires are over 4 ft in diameter and provide a significantly stable ride. How many times here have we heard about someone trying to master their rear blade for grading level and are confronted with the woop-de-do effect. The closer your support is to the tractor, the more level the implement reaction. I've got the same setup on my rotary cutter, except without the turnbuckles since adjustment is much less precise.
 
   / Help with top link adjustment for rotary cutter. #182  
I'll try to address all the issues at once.

The belt twist in normal for the Woods RM306. It does a 360 at that point. You'd think it would be a problem or cause excess wear, but I changed the belt for the first time last year after 29 years of operation on the original, and it still was good but had worn such that it was sitting too low in the pulleys and I was getting some slippage.

The top link on my RM306 was set a little long in the picture, so it probably would limit motion in the case of assending from a steep valley, but I don't have any so I usually have it set that way so the back end doesn't lift up when going over hills/ridges. A little longer toggle would have been better and I've toyed with making one, but just haven't found it all that necessary.

The chains, at least for me, have nothing to do with weak hydraulics or saving the cylinders some beating, but I guess it could. I use the chains for two basic reasons: 1) The deck is always set at the exact same height. I never have to look back or make adjustments. If I raise it up for some reason, when I'm done, I just lower the control lever all the way and it returns to the exact same position - really nice! 2) I think the chains are even a better way of supporting the front of the deck (mower or rotary cutter) than front caster wheels would be, and far and above using the 3-pt lower links. I say this because with casters out front, the deck would bounce much more as the little (approx 8"-10") wheels roll along over every little bump. (Have you ever taken your riding mover or garden tractor into rough terrain - if so you'll know what I mean!) Also, the chains are superior to the 3-pt because they establish the support at the tractor rear wheels, not ~3 ft out, where every dip or rise of the front of the tractor causes a correponding opposite reaction on the lower links. Yes the front of the deck will ride with the rear tractor tires, but heck, those tires are over 4 ft in diameter and provide a significantly stable ride. How many times here have we heard about someone trying to master their rear blade for grading level and are confronted with the woop-de-do effect. The closer your support is to the tractor, the more level the implement reaction. I've got the same setup on my rotary cutter, except without the turnbuckles since adjustment is much less precise.
 
   / Help with top link adjustment for rotary cutter. #183  
Beenthere -- That sounds like it will work. I have a single strap from the top of my pivoting A frame to the rear of the mower. That has a chain connecting it to the wheel mounting point. If I replace the strap with a cylinder and lengthen my tractor top link as much as possible, then extending the cylinder would lower the back of the mower while the pivoting action of the A frame would allow for some motion at the front. I have 3 attachment points for the lift arms, so I can lift the front end pretty high to clear the edge, then lower it. It sounds like a winner! Thanks!! /forums/images/graemlins/grin.gif

I will definitely have to do something about materials thrown in my direction from a mower operating at that crazy angle, though. /forums/images/graemlins/shocked.gif
 
   / Help with top link adjustment for rotary cutter. #184  
Beenthere -- That sounds like it will work. I have a single strap from the top of my pivoting A frame to the rear of the mower. That has a chain connecting it to the wheel mounting point. If I replace the strap with a cylinder and lengthen my tractor top link as much as possible, then extending the cylinder would lower the back of the mower while the pivoting action of the A frame would allow for some motion at the front. I have 3 attachment points for the lift arms, so I can lift the front end pretty high to clear the edge, then lower it. It sounds like a winner! Thanks!! /forums/images/graemlins/grin.gif

I will definitely have to do something about materials thrown in my direction from a mower operating at that crazy angle, though. /forums/images/graemlins/shocked.gif
 
   / Help with top link adjustment for rotary cutter. #185  
Personnaly, I view any wear and tear on the 3pt arms and hyd system as minimal at best, and well within the design of the system, especially with a rotary cutter. Otherwise, carrying a 600# ballast box around on the 3pt would bother me. It doesn't one bit. (knock on wood /forums/images/graemlins/grin.gif )

Those check chains are a good idea for the height setting, but I don't have the RC on often enough to think I'd want to mess with them. I only keep about 7 acres mowed a couple times a year, with other brush cutting, and I adjust the front edge height too often to put up with the chains. If I want to grind down a stump, I will set the front edge of the RC over the stump and lower down on it 'til it is at ground height. Works for me.
 
   / Help with top link adjustment for rotary cutter. #186  
Personnaly, I view any wear and tear on the 3pt arms and hyd system as minimal at best, and well within the design of the system, especially with a rotary cutter. Otherwise, carrying a 600# ballast box around on the 3pt would bother me. It doesn't one bit. (knock on wood /forums/images/graemlins/grin.gif )

Those check chains are a good idea for the height setting, but I don't have the RC on often enough to think I'd want to mess with them. I only keep about 7 acres mowed a couple times a year, with other brush cutting, and I adjust the front edge height too often to put up with the chains. If I want to grind down a stump, I will set the front edge of the RC over the stump and lower down on it 'til it is at ground height. Works for me.
 
   / Help with top link adjustment for rotary cutter. #187  
If I want to grind down a stump, I will set the front edge of the RC over the stump and lower down on it 'til it is at ground height. Works for me.

Now that is an interesting idea. How big and what type of stumps are you using this method on?
 
   / Help with top link adjustment for rotary cutter. #188  
If I want to grind down a stump, I will set the front edge of the RC over the stump and lower down on it 'til it is at ground height. Works for me.

Now that is an interesting idea. How big and what type of stumps are you using this method on?
 
   / Help with top link adjustment for rotary cutter. #189  
Depends on size (diameter) of the stump and the species. But up to a 3-4" stump will chew up if done slowly. Usually they are less than 3".
 
   / Help with top link adjustment for rotary cutter. #190  
Depends on size (diameter) of the stump and the species. But up to a 3-4" stump will chew up if done slowly. Usually they are less than 3".
 

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