Skidding Winches
- Thread starter Greenland South
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Greenland South
Silver Member
I'll try that. Thanks
Rustyiron
Super Member
Very nice, I want to build one also but got hung up on the pully itself. What did you use?
Gordon Gould
Super Member
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- Apr 1, 2007
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- 6,648
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- NorthEastern, VT
- Tractor
- Kubota L3010DT, Kubota M5640SUD, Dresser TD7G Dozer
That looks great. I think you have a good thing there. I only see two minor differences between yours and the one I have but it looks like yours should work fine. I will just list them for you to think about if you need some fine tuning. The first is on mine there is more room for the hook and sliders to pass around the pulley. I am thinking as they go around they jack the cable out so it can fall. There is no size reference but it looks like the hook/sliders may hit your trip post. May not matter depending on when or how the cable falls. The second is mine has a strong detent holding the keeper closed. They have two hole drilled in the plate beneath the keeper and two round headed rivets in the keeper, rivet heads down, the heads sit in the two holes in the closed position. Detent pressure is set with a coil spring and castle nut. Here are some pics so you can see what I mean.
gg
gg
OP
Greenland South
Silver Member
I was in a machine shop a few weeks ago and I noticed a stainless sheive in the scrap bin. Machinist said it was machined to the wrong size. I said it's the perfect size, can you cut some off one side. 15 minutes and $50 cash later I was on my way.
Sawyer Rob
Super Member
I bought a few snatch blocks from harbor fright for $24 ea... They are exactly the same ones sold under numerous other brands for $50 + bucks ea.. I'm thinking they would be a very good starting point...
I've used them some and I have no complaints so far...
SR
I've used them some and I have no complaints so far...
SR
Gordon Gould
Super Member
- Joined
- Apr 1, 2007
- Messages
- 6,648
- Location
- NorthEastern, VT
- Tractor
- Kubota L3010DT, Kubota M5640SUD, Dresser TD7G Dozer
Doing the same old enjoyable thing today - working in the woods. Cutting fir with stump rot and trying to make saw logs out of them.
I made a bad set-up on the tree above with my self releasing snatch block. The result was the cable being jammed between the sheave and the body of the block. Had to take the snatch block apart back in the shop to free the cable.
I was making a video so I caught the trouble on tape. If you pause at 34 seconds you can see what I did wrong.
http://youtu.be/ofgkSwgpPBg
If you didn't see the problem it was that I set the snatch block way to low - almost on the ground. I never did this before. I usually put it at least a couple feet off the ground but in this case I had the strap on a young oak that is a future crop tree and I wanted to minimize the stress on the tree and root system so I set it way low. Because the block was so low, lower then the diameter of the log, and the winch is high, the cable had a lot of lift on it so when the slider hook went around the sheave and jacked the cable off the snatch block the cable went up and jammed instead of falling free off the bottom.
In hind sight my mistake is obvious but I never gave it a thought when I set it up. So if you have a self releasing snatch block remember to set it high enough so that the cable will fall freely off the bottom when it releases. And make sure the weight of the log is pulling the cable down at the release point so the cable can't lift into the block and jam under the sheave.
gg
I made a bad set-up on the tree above with my self releasing snatch block. The result was the cable being jammed between the sheave and the body of the block. Had to take the snatch block apart back in the shop to free the cable.
I was making a video so I caught the trouble on tape. If you pause at 34 seconds you can see what I did wrong.
http://youtu.be/ofgkSwgpPBg
If you didn't see the problem it was that I set the snatch block way to low - almost on the ground. I never did this before. I usually put it at least a couple feet off the ground but in this case I had the strap on a young oak that is a future crop tree and I wanted to minimize the stress on the tree and root system so I set it way low. Because the block was so low, lower then the diameter of the log, and the winch is high, the cable had a lot of lift on it so when the slider hook went around the sheave and jacked the cable off the snatch block the cable went up and jammed instead of falling free off the bottom.
In hind sight my mistake is obvious but I never gave it a thought when I set it up. So if you have a self releasing snatch block remember to set it high enough so that the cable will fall freely off the bottom when it releases. And make sure the weight of the log is pulling the cable down at the release point so the cable can't lift into the block and jam under the sheave.
gg
Rustyiron
Super Member
That's exactly what I picked up today on the way home. Thinking about taking it apart and putting both halves together, welding them with the sheave on one side, then seeing what else it might need.
Gordon Gould
Super Member
- Joined
- Apr 1, 2007
- Messages
- 6,648
- Location
- NorthEastern, VT
- Tractor
- Kubota L3010DT, Kubota M5640SUD, Dresser TD7G Dozer
I don't think my cable will get jammed under the sheave out in the woods again. I made a guard out of a short piece of rod.
gg
gg
