The Bib.Squirpa Dangler - Easily add weight while BTC
Yello sirs. Back again with another contraption that works very well for our purposes.
I apologize if this is a little long, but there are some details which warrant explanation.
What I was after was a way to add weight, while remaining under tension, while BTC hanging.
Three conditions.
If you’ve put in some time with BTC, you know what I mean when I say it’s not exactly easy to adjust weights. You’re either super slouched and wadded up in a chair, or you’re laying down in a bed – and leaning wayyyy forward to reach wayyyy down between your legs – it’s just not the most ideal operation I can envision.
I started off with a water jug and pre-filled measuring cups, pouring in water for weight. Dumping out water. Refilling measuring cups. Just not efficient IMO.
I weighed some water bottles and got them measured out to 1lb bottles and 0.5lb bottles. I’m dangling them from paracord. I tend to prefer the bottles. But I’m still leaning way forward and reaching way down to attach these bottles.
And I’ve yet to find a way to do this without taking tension off my unit while I add the weight.
I looked into lead decoy weights like 5.5Squared was using. I prefer not to routinely deal with raw lead. Some may disagree about lead’s skin-absorption, but I know from past projects I can taste the metal in my mouth after a few minutes of handling. So – personal preference.
Long story short: I discovered 1-1/2” steel ball bearings weigh in right at 8oz. These are far cheaper than “eco-friendly lead-free” decoy or fishing weights. I got cheap chromoly steel ones (not chrome-plated/stainless) from Amazon – they can rust, so I lightly oiled them with some oil formulated for corrosion resistance and buffed them dry. Will maybe re-oil once a year. These will be kept in an upstairs, heated, carpeted room – so that is the ideal environment for low corrosion. (Basement/garage, unheated, concrete floor/walls = worst environment.)
50mm polycarbonate tubes from Amazon (you will not be finding these at a hardware store in the US). Transparent so you can see the bearings inside. 46mm (1.81”) inner diameter – plenty for 1-1/2 bearings. Exactly the right size (1.97”) on the outside diameter for 2” weight plates to slide over and sit on the ledge of the end cap, allowing you to easily change your base/starting weight, and then just use the inner bearings for your session-weight increases. 16.5” length. This fits 11 bearings, which gives you 5.5lbs of weight you can add while under tension – important when getting up to the higher weight ranges. Future-proof design. The 16.5” height also comes in handy later – will explain.
End caps I found were PVC. Cheapest glue I could find specifically rated for polycarbonate (tricky to glue) and PVC was the Loctite Epoxy Plastic Bonder. Good stuff. Traced and cut out a 1” thick hunk of foam to cushion the inside of the end cap while I’m dropping 8oz bearings in there. Works great.
When I first slid my 2” fractional weight plates on over the outer diameter, they were a much nicer fit than I expected, so I had to go back to the drawing board and figure out how to hang this thing. I was going to just tape paracord to the tube, but the weight plates wouldn’t fit over that. So I went with a metal band clamp with some 8mm silicone tubing over it. Extreeeeemely happy with this. Super strong and slick to remove/replace for whenever you’re ready to step up your base weight.
Finally, by adjusting the band clamp down, so the hanging point is lower on the tube, the top end of the tube rises up more and gives you an easier reach for dropping in another bearing (see last picture). No more curling up into a ball to reach way down between your legs. This can obviously be adjusted for different hanging angles or pulley setups as needed.
This is not the cheapest option (water bottles in a plastic grocery bag) but it is the absolute best BTC option I’ve surmised thus far. Hope it was helpful.
I am naming this thing the Bib.Squirpa Dangler in honor of the following:
Bib: for his pioneering work with hanging and all the people he’s inspired and coached along the way. I have seen in his comments and replies that he has the patience of a saint. This quality speaks volumes about his character, and I just appreciate him a lot. I also know he made his own hanging weight arbor out of PVC pipe which would’ve been very similar to this (just without the weights inside the pipe).
5.5Squared: for his massively popular Hanging with FIRe thread, which I know I and so many others found extremely eye-opening, informative, and motivational.
Kyrpa: for his wave-making research, hypotheses, and advanced modeling and calculations which have influenced and inspired a great many, and, I believe, pushed the envelope on the science of PE. You should be awarded an honorary PhD from uh…TITS University :-) (The Texas Institute of Technology and Science, of course.)
I want to thank you three specifically. And I want to give thanks to all the others who have contributed to this line of research, like Longerstretch, manko007, and many others. We stand on the shoulders of the men who’ve come before us. Thank you, guys.
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