In Reply to: Re: DIY Homebrew 3-point Boom Lift Pole posted by Ultradog MN on May 03, 2020 at 04:44:06:
I most certainly agree with your assessment avoiding building boom pole too heavy! I'm not particularly so much a team player (more of a "cowboy curmudgeon" :-), so I typically work alone and definitely prefer implements and accouterments I can conveniently handle solo.
I only watched part of the video myself, fellow got a bit long-winded :-) Was mostly interested in snippet illustrating advantage of design's higher reach capacity.
That was an excellent photo you took, showing futility of building boom pole exceeding lift capacity of tractor. Kudos! lol :-)
I'm unaware of means building anything "foolproof", since operator's "common sense" is the most important safeguard, but still build-in warning decals and "clues" to help prevent problems.
Trouble is, my curmudgeon self's warning label would be viewed as "problematic and politically Incorrect":
"Warning: Don't be an idiot! NOT designed to replace a crane, do not exceed lift capacity or you may end up breaking something and/or getting hurt. Apply liberal dose of Common Sense, and if larger equipment's necessary, rent or borrow it."
In some people, where common sense could be viewed as a "superpower", "you can't fix stupid" and it's probably for the best these sort "hire a tradesman".
The longer the reach, the less the lifting capacity, basic lever physics. I can perceive specialist cases where someone would benefit from building an extendable/excessively long-reach boom pole.
Without exceeding lifting capacity of boom or tractor, one may need to lift something of a couple hundred pounds weight at a greater height, for instance, motor off of water-pumping windmill. For such uses, I'm unfortunately unaware of any means building something idiot-proof.
After a successful lawsuit, some restaurants have printed on their coffee cups: "Caution! Contents may be HOT". Ya think? :-p LOL
I really like and appreciate your notion of adding improvements to a basic boom pole over time, as needs and circumstances demonstrate.
Starting out with a basic essential design, I can see advantages adding improvements as you've mentioned: a hydraulic upper link. I've reviewed advantages of designs utilizing winching of one means or another.
Anything I build will have modifications made over time as circumstance prove necessary/expedient. I mostly modify everything, meeting circumstances whilst applying common sense :-)