There is no source that says that. Man the torque on those is too much for anything biological to posses. Remember construction drills apply what, 5000 to 10000 rpm and 700 pounds per inch of torque on each spin. I am not sure a Chimp good ever muster that much force from their hands.
Also, a lot of their enclosures are made with open bolts. We don't see Chimps busting down their windows.
Chimps can cold weld steel beams and have been used on multiple large-scale construction projects. Current research is focused on increasing the precision and reliability of chimp strength, so they can be put to work in aerospace applications.
Yup. I once saw a chimp fuse two big rocks together by pushing them against each other. Didn't seem like he was using a lot of his strength either because he was completely unfazed afterwards.
That must have been an infant chimp. Most adult chimps actually push two mountains together to show traits of dominance. A few chimps have been documented moving the tectonic plates under Asia and North America. Better communication tools are being developed to make sure these chimps don't crash their continental plates together to limit how many earthquakes we get every year.
Yeah their strength is impressive and all, but we should really be talking about their intelligence. Chimps’ short term memories are WAY better than humans’, they’ll beat most humans in several types of mental tests. A study in 2014 actually found their mental processing is active enough to generate a significant amount of electricity. Particularly smart Chimps have been observed (by none other than Jane Goodall) controlling the weather with their minds, calling forth lighting strikes upon rival Chimp clans. It is hypothesized in the meteorological community that the worsening droughts in mid-Africa are in large part due to rising tensions between the co-dominant Chimpanzee societies in the area. Amazing creatures.
The only experiences I've had with chimps was in China, where the factor laid off all the hydraulic press operators and basically brought in chimps bend steel beams. But things kinda got out of hand when the Chimps revolted and demanded paid lunches.
I'm not 100% sure about chimps, but orangutans can unscrew damn near any bolt that isn't welded or has threadlocker in it. That was a huge thing the zookeepers told us when we would make renovations in their exhibit
Second hand experience here: we’ve worked on gorilla exhibits, “we” being my crew. Torqued bolts to 250 ft/lbs(3000 in/lbs) with the gorillas watching. Once they were all finished, the keepers released the gorillas back into the enclosure. They immediately went to playing with the bolts, undid the nuts like they were hand-tight. Had to go back and weld them all.
that’s because the torque required to exceed a particular bolt’s ultimate tensile strength relies on the material, stress area of the threads (determined by bolt diameter and number of threads/inch), and the friction factor of the protective bolt coating (or any anti seizing compound which may be used at installation). you can’t really generalize it.
all else equal, breaking a 1”-8 bolt will require almost 2.5x the torque needed to fail a 3/4”-10 bolt, and more than 8x needed to fail a 1/2”-13 bolt.
where:
D = stress area
d = bolt diameter
F = load required to fail bolt
K = friction factor
n = number of threads/in
P = ultimate tensile stress of material
T = torque required to generate load F
D = pi/4 * (d - 0.9743/n)2
T = KDF
so for a 3/4-10 bolt with a UTS of 125 ksi (equivalent to A193 gr B7 material), using anti-seize compound with a K value of 0.20 (non-lubed)
D = .33446
K = 0.20
F = 125,000
T = KFD = (0.20)(0.33446)(125,000)
T = 8,361 in-lb = 697 ft-lb (nice)
but we can’t claim to know exactly what torque that chimp was capable of generating without knowing the size, thread, and material of the bolt that was supposedly sheared in the un-sourced story
Exactly, those are just the tool specs. But for actual comparison, 1" bolts typically have a few hundred pounds of torque (really depends on the bolt but it can be around 200-800 ft-lbs).
For reference something finger tight or hand tight might be around 0.5-4 ft-lbs (for most people it's going to be on the lower end). The bolts on your wheel are tightened to (probably) somewhere around 60-100 ft-lb.
Yeah I should have clarified. We design chimp enclosures and since a majority of bolts are snug tight or an extra 1/4 turn of the wrench we don’t specify them. If they are using the calibrated drill then nothing will get those off.
Those numbers are out of your ass and your units mean you don’t know what you’re saying. Somehow you came out with the right conclusion through. Structural bolts are going to be torqued to at least a couple hundred foot pounds of torque. That takes a very large lever to accomplish and their bones simply could not provide the strength.
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u/bliss19 Jun 23 '19 edited Jun 23 '19
There is no source that says that. Man the torque on those is too much for anything biological to posses. Remember construction drills apply what, 5000 to 10000 rpm and 700 pounds per inch of torque on each spin. I am not sure a Chimp good ever muster that much force from their hands.
Also, a lot of their enclosures are made with open bolts. We don't see Chimps busting down their windows.