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Thread: Derrick rigging and redneck cranes

  1. #81
    Treehouser Sponsor Tree09's Avatar
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    I'm sorry, I didn't notice it, yeah I'll see if I can. Here's a couple other ones too, this one is a derrick on a ship, showing a cool and easy way to do the u joint on the boom. While it wouldn't work on a derrick that rotates more than 180 degrees, you could readily change it to move in one axis only. It also shows the amount of maintenance needed, which is about zero. Simple stuff like this can take abuse like none other.
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    Kyle


  2. #82
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    From post 3
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    Kyle


  3. #83
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    Click image for larger version. 

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    Kyle


  4. #84
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    Click image for larger version. 

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    Here's some sheerlegs, similar to my truck and trailer build.
    Kyle


  5. #85
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    Here's the one from the other post about deadman anchors, this greatly increases the holding capacity by increasing surface area. Basically the goal with earth anchors is using a large chunk of dirt and it's cohesiveness to resist the load. Steps to increase that bonding are rewarded with greater holding capacity
    Kyle


  6. #86
    TreeHouse Administrator MasterBlaster's Avatar
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    That's looking like some hard work!

  7. #87
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    Here's the last one from 3, where the log chunk for making the boom swing is visible.
    Kyle


  8. #88
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    Apparently it's called a squirrel chunk lol

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    Kyle


  9. #89
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    Quote Originally Posted by MasterBlaster View Post
    That's looking like some hard work!
    Yeah, for a large one like that on a rooftop. That one is probably about 30 tons capacity, and it shows how the pipe sections can be bolted together to enable it it be brought up and down in a small freight elevator
    Kyle


  10. #90
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    I don't know why they didn't post right, or allow me to fix them... Probably too much in a single post for my phone or something?
    Kyle


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