Block and Tackle Pulleys 2.0
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Published on December 30, 2011
Description
After making the Block and Tackle Pulleys by SteveWall I was left curious about these things, so I started researching them and found many variations.
My favorite one was in a boating catalog, it used 3 sheaves and made a type of spiral with the rope. It also had a lock which would make it more useful.
I used the hook from SteveWall's with a couple of variations and drew the rest of the parts.
I'm not sure how strong the ABS axles for the sheaves will be. I think that screws might work best as axles for heavy work.
Also all I had was a rather slick nylon rope so that the lock is not locking properly. I'm in search of a cotton rope for a test, if it fails I'll have to re-work the lock.
My favorite one was in a boating catalog, it used 3 sheaves and made a type of spiral with the rope. It also had a lock which would make it more useful.
I used the hook from SteveWall's with a couple of variations and drew the rest of the parts.
I'm not sure how strong the ABS axles for the sheaves will be. I think that screws might work best as axles for heavy work.
Also all I had was a rather slick nylon rope so that the lock is not locking properly. I'm in search of a cotton rope for a test, if it fails I'll have to re-work the lock.
Instructions
Build one each of the outsides (I called one the block and the other the tackle, but I'm not sure if I'm right about those names.)
Build five of the new-sheaves, one new-sheave-sm and one new-sheave-stop and two of the new-hook.
Assemble them together as per the photos.
I used 4mm x 3/4 inch (19mm) bolts with nuts to hold them together.
Build five of the new-sheaves, one new-sheave-sm and one new-sheave-stop and two of the new-hook.
Assemble them together as per the photos.
I used 4mm x 3/4 inch (19mm) bolts with nuts to hold them together.
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License
Block and Tackle Pulleys 2.0 by eM5 is licensed under the Attribution - Share Alike - Creative Commons license.
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Screws refer to the pointy types in most countries fyi. Normally ppl use bolts.
Bolts it is! Thanks.