somewhereinusa
New member
What kind of RPM are you shooting for? What would recommended be?
3 point hitch string trimmer, Mark II
- Thread starter PHPaul
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ArlyA
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I'm not sure but will guess you mean this type of swinging mowing blades. But I agree, that stings do not need a shear pin.
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texasranger556
Platinum Member
I don't think anyone was suggesting a shear pin for the driveline. I was asking about something in the frame that would give way before something bent...in the event of daydreaming while driving through a gate, garage door, past a tree, clothesline, wife's brand new car, etc.
kthompson
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PHPaul, I spent many an hour working on a boom mower for my tractor. Mostly in my mind. Ended up finded an old one a friend was going to scrap out so got great price and had cutter head the right size for it. I had to make some linkages for the boom and I used wood to make the test linkage with for test fitting.
To put tilt on your cutter should not be that hard as someone else pointed out. If you are interested take a look at the side mount cutters to see how they are designed. That is how I solved some of my how tos. Might not work, but looking at your pictures the question came to me, could you replace the right lift arm linkage with a cyl to raise and lower the right lift arm? A small amount of movement there would end up being a good bit at the head. It is a neat idea in design.
To put tilt on your cutter should not be that hard as someone else pointed out. If you are interested take a look at the side mount cutters to see how they are designed. That is how I solved some of my how tos. Might not work, but looking at your pictures the question came to me, could you replace the right lift arm linkage with a cyl to raise and lower the right lift arm? A small amount of movement there would end up being a good bit at the head. It is a neat idea in design.
TractorGuy
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Yes that is kind of what I was thinking. A mini bush hog of sorts. I have an old 4' Befco finish mower I could use for a gearbox and some other parts.
I was thinking of the disc mower blades they sell at TS for hay mowers. A 6 pack is $9.99 and a pack of the shoulder bolts is $29.99. The blades are available in flat, CCW, or CW configuration.
I have one of those Craftsman walk behind trimmers but I would never cannibalize it for a project like this. I HAVE thought about just drilling a couple of holes in it and mounting the mower on a boom. The heavy trimmer line will last a good long time in any type of grass but it doesn't take much of a stick to break it.
Ahh okay. I misunderstood the question. Guess you could hinge it at the transfer shaft or something and put a break away pin on the front.
