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Hydraulic Wingnut

Wing nut for Tubing
  [vote for,

Proposed is a wing nut for hydraulic use. This would allow quick removal and replacement of compression nuts.
kevinthenerd, Aug 17 2011

Thumb reinstallation. http://www.ncbi.nlm...gov/pubmed/19844669
[mouseposture, Aug 17 2011]


       Am I the only one who finds this absolutely clear and easy to understand?
MaxwellBuchanan, Aug 17 2011

       Oh, hang on. Are you talking about the compression fittings used in plumbing? If so then, yes, except that you're not going to be able to run the pipework close to the wall.
MaxwellBuchanan, Aug 17 2011

       Compression nuts quickly work loose if they are only hand- tight; this is why, if you consult the service manual, you will find that many hydraulic fittings are tightened to specific torque settings.   

       Even with the additional purchase provided by the wings, a human hand cannot sufficiently tighten the compression fittings on commonplace hydraulic systems, and even low- pressure systems, such as fuel and coolant lines, would loosen from flex and vibration.   


       Now that I think about it, I don't even see how this would speed up removal and installation; whether you use your hand or a wrench, you still only have to turn the nut a couple of times to loosen it enough to spin off, likewise to tighten it.
Alterother, Aug 17 2011

       If you wanted to control the torque, you could use the same engineering technique which is used on cheap self-assembly garden furniture: when the wings snap off and you gash your thumb, it's almost tight enough.
MaxwellBuchanan, Aug 17 2011

       Yes, but that eliminates the proposed advantage of this idea, which is re-usability (i.e. repeated removal and installation for maintenance purposes).
Alterother, Aug 17 2011

       It's almost impossible to remove and install a thumb effectively.
MaxwellBuchanan, Aug 17 2011

       Oh, crap, here comes another BorgCo pitch...
Alterother, Aug 17 2011

       As surely as night follows day ...   

       Good point, [Alt]. If a joint requires repeated assembly and disassembly, there are a number of excellent (if expensive) quick-fit or snap-fit connection systems to do the job, the mating parts of which are more or less permanently attached to the pipework, often using compression fittings.   

       Repeated disassembly and reassembly of compression fittings is not recommended, as the propensity of some metals to cold-flow under tension or compression results in progressive distortion of joint components, and resultant difficulty in re-forming a reliable seal. Resorting to compressible washers and/or jointing compounds is not always possible or advisable.   

       // It's almost impossible to remove and install a thumb effectively. //   

       It is eminently possible to remove a thumb, or indeed all the thumbs a human may have; it's the re-installation that tends to present major technical issues.
8th of 7, Aug 17 2011

       The Borg are, evidently, about a decade behind Vietnam in that area <link>.
mouseposture, Aug 17 2011

       Actually, a thumbdrive is quite fiddly to install: I always seem to get it the wrong way around. And to safely remove it appears to be occasionally impossible. Is that what you meant?   

       By the way, Alterother, unless you edited afterwards, how did you predict the future...have you been assimilated already?
Ling, Aug 17 2011

       No. The Borg are extraordinarily predictable, once you get to know them. They suck at rock-paper-scissors.
Alterother, Aug 17 2011

       No, cam-lock couplings are superb RPS players.
Alterother, Aug 18 2011


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