Also found great information on vang systems on the Ronstan site https://www.ronstan.com/marine/vang_systems.asp
GL - you mentioned that you were using the Ronstan RF20332 / RF20302 triples for your 6:1 so looking at the vang system examples, looks like a 12:1 would be their #8 example, but you have flipped it around so that the cleat is on the boom end rather than at the mast.
From an earlier post you made about my current set up with the 40C fiddle blocks
The cleat on the vang needs to open then other way, if you want to be able to release it.
Do you mean just switching the block with the cleat end to attach to the boom, rather than having block with cleat attached at the mast... or something else?
As I started to think about 6:1 option with a set of triples for the vang I was having some problems visualizing how to run the line, should the becket be on the cleat block or the other block, etc., etc. but found this useful link on the Harken site on how to reeve a 6:1 block. Thought I'd post it here for others. https://www.harken.com/article.aspx?id=42513
Then spent time looking closely at your 12:1 set up picture, blowing up the view as much as I could, but still have some questions on your set up.
For the triple block with the cleat that is attached to the boom, are you using a twisted shackle or the shackle that comes with the RF20332? The picture is not clear. As I re-read how to reeve a 6:1 set up, I still can't visualize how the lines between the two blocks will not cross / rub when the blocks are finally attached to the boom / mast. The harken article does say
.Once the system is threaded correctly, you can cleat the rope and put some tension in the system. This causes the two blocks to sit at approximately 45 degrees to each other, but the ropes will sit squarely in the sheaves and the falls will not touch.
Your triple blocks do not look like they are sitting 45 degrees to each other but look to be in line with each other.
Looking at the red / yellow line in your picture for the 2:1 cascade, one end is attached to the triple block RF20302 but can not see where how it is attached to the boom (maybe line is tied to a snap shackle?), or is it somehow attached to the triple block at the boom?
Think I've learned more about blocks / pulleys / vangs over the last several days than I did in high school physics 50 years ago
![Laughing :lol:](./images/smilies/icon_lol.gif)
Thanks!!