#garfield Logs

Jul 13 2015

01:09 rue_house how do I keep it from twisting?
01:09 rue_house just thinking out options
01:09 any40836995 the external side panels i mentioned last nite
01:09 rue_house hmm
01:10 rue_house a pipe is kinda the only rotationally stable beam isn't it?
01:10 any40836995 yeas, your side penels will form the pipe when all assembled
01:10 any40836995 and be great weight carrying
01:11 rue_house the problem is that its got the be HUGE to contain the max size of the muscles
01:12 rue_house putting the muscles into the pipe isn't a good option
01:12 any40836995 then the arm will be huge witout the side panels?
01:12 rue_house it'll varry
01:12 rue_house the muscles puff out when they pull
01:12 y40836995
01:16 any40836995 ok, make the skeleton bone a pipe, cramp all the selenods into it, and seal it, apply pressure, use it as the manifold
01:21 any40836995 with the air/water valves inside the pipe, all the movement of the air muscles cannot damage them
01:21 rue_house I have to have good access to everything
01:22 rue_house this will be a really high maintenance machine for quite a while
01:22 any40836995 the valves will be high maintenace?
01:23 rue_house probably
01:23 rue_house their used washing machine valves
01:24 y40836995 is allout of ans
01:36 rue_house I'm also wondering why I couldn't actuate the 2d linkage with just 3 muscles
01:36 rue_house it would save me 2 valves
01:37 rue_house the recycler who would let me take the valves was shut down, I need to conserve as many valves as I can
01:41 rue_house why is the thumb short a linkage?
01:43 any97599421 it's two bones instead of 3
01:43 any97599421 it has 3, but the big bone s usually considered part of the palm
01:44 rue_house oh, maybe thats what the cluster of bones is in the palm
01:45 any97599421 if you could redesign, make the humans little finger be larger and able to be converted to a thumb as needed
01:46 rue_house 4 is 90degrees
01:46 rue_house 3 is
01:46 rue_house 120
01:53 rue_house the ideal offset is to have one of the spokes at 45 degrees from one of the perpendiculars
02:00 any97599421 o
02:05 any97599421 A girl walked into the computer center where I work. She said she was having problems with her Mac. I asked what kind of Mac she had. In an indignant voice, she replied, "Duh, Intosh."
02:17 rue_house I was looking at some images of star wars fighter droids, they use a pin off the elbow to make the rotational pivot for the forearm
02:27 rue_house I'm gonna need one freaking mean pin
02:28 rue_house kat, I want to put point bending force on a pin without it bending, I think the load is about 7500inch-lbs
02:30 rue_house zhanx, what size rod can I put 7500 inch-lbs leverage on without it bending?
02:32 rue_house I like the drawing I'm generating here, its got a lot of insight
02:36 any97599421 i suddenly cannot recall why i regedited every puter on the shelf when i got them
02:38 any97599421 use a 5/8 grade8 or a 3/4 grade5 ,, i think i'd use a 1" grade8
02:41 rue_house only 1?
02:41 rue_house 3.5 tonnes?
02:42 any97599421 figuring 30,000 lb/inch deformation
02:43 rue_house banding?
02:43 rue_house er bending?
02:43 any97599421 yeas
02:43 any97599421 or stretching, actually
02:49 rue_house I dont like the 2 axis bearing nature
02:50 rue_house pin interfearance problem, hmm
02:53 any97599421 well, i sppose the cahnces ofmy doing a fresh winxp install and getting all the service packs is pretty low now anyhow
02:53 rue_house ah, this is what tapered roller bearings are for
02:54 rue_house wanted to stay with bushings tho
02:54 rue_house eliminates the odds of having small pieces fall out of your joints...
02:56 any97599421 considering how roller bearings are installed, the chances oflosing parts of them is small
02:56 any97599421 ^tapered roller^
02:57 any97599421 heavy washer to do the preload and take the side thrust in operation, tends to hold the bits in
03:00 rue_house I'v seen the balls spill out of a bearing before
03:01 rue_house cant say the applicaion of this is at all the same tho
03:04 rue_bed and if a bearing was getting bad, the operator would feel it
03:04 any97599421 balls coming out of a tapered roller bearing?
03:04 any97599421 they don't use balls
03:04 rue_bed haha, that would explain some problems woulnd't it
03:04 any97599421 yeas
03:04 rue_bed 'seems to have been assembled........wrong....'
03:05 rue_bed tho, tapered roller bearings aren't in the budget
03:05 rue_bed :/
03:05 rue_bed I hope I can find a free engine
03:06 any97599421 even if you buy them as lots of "small trailer wheel bearings" ?
03:06 rue_bed 2hp 2 stroke boat engine
03:06 rue_bed I'm in the middle of nowhere, stuff like you have access to just dosn't come up for me
03:06 any97599421 there were lots of 1000 small metric bearings on ebay for a while, they went real cheap
03:06 rue_bed big things dont ship well from china
03:07 rue_bed remember how much that synchro pulley cost me?
03:07 any97599421 it was usa seller
03:07 rue_bed usa sellers are worse
03:07 any97599421 how is that pulley set working?
03:10 any97599421 http://www.ebay.com/itm/M-LOT-60-15x35x13-Alternator-Bearing-NSK-831-/321800925802
03:10 any97599421 http://www.ebay.com/itm/UNIDENTIFIED-40-Lot-Small-Galvanized-Steel-Conveyor-Roller-Ball-Bearings-Bearing-/361139023506
03:10 rue_bed its great, the jig is almost ready to be tested
03:10 rue_bed if I can get a bit more work in on it
03:11 any97599421 http://www.ebay.com/itm/Lot-Of-100-NSK-6080-Skateboard-Bearings-/231614817872 <<== $30
03:11 rue_bed but I cant use skateboard bearings for the 7500inch/lb sideforce for the forearm of the mecha
03:11 y97599421
03:12 rue_bed trying to use large metal with few parts, seems to be a good low-fail recipie
03:12 rue_bed :) and lots of grease
03:13 rue_bed I wonder if 1" square tube steel can take that force
03:13 rue_bed 300lbs over 25"
03:13 rue_bed dosn't sound unreasonable
03:13 rue_bed dosn't feel like much margin mind you
03:14 rue_bed the + is open tho, lots of room for cables
03:14 rue_bed hmmmmmm
03:15 any97599421 how are you making a + cross section of a bone? weldng back-to-back angles?
03:15 rue_bed if I cant stop it from twisting, maybe I should just ensure its ok with any twisting that happens
03:15 rue_bed I was thinking 4 angle iron, then I reduced it to 2
03:15 any97599421 the + will twist, of course
03:15 rue_bed yea
03:16 rue_bed but it its not past elastic, it could be the torque sensor I need anyhow
03:16 any97599421 k
03:16 rue_bed and If I measure the angles right, the servo can cancel it out
03:17 rue_bed just need a torque bar from the far end to a rotation sensor
03:17 y97599421
03:17 rue_bed I dont know how much torque the forarm needs to develop
03:18 rue_bed that could be interesting to measure
03:18 rue_bed I wonder if I can gernate enough to register on the torque bar
03:19 any97599421 why must it be a torque bar?
03:19 rue_bed well, its calibrated
03:19 rue_bed I ahve a digital weigh scale I can use with a jig
03:19 any97599421 1ft emt stick with a digital scale on the end
03:20 rue_bed I doubt I'm capable of 40 foot-kg
03:20 rue_bed ;)
03:20 any97599421 that's what power tools are for
03:21 rue_bed its a 40kg scale
03:21 rue_bed 10g resolution, which is frustrating sometimes
03:21 any97599421 o
03:22 rue_bed so, on the 28th I'll be in vancouver till oct ... 4?
03:22 any97599421 use a 10ft emt instead of a 1ft , scale th readout by 10
03:22 rue_bed k
03:22 rue_bed actually, my irc hours will probably be the same
03:22 any97599421 or ,, hmm, an 1/10 ft and scale it by 10
03:23 any97599421 going to install internet video cameras on the house before you go, right? and a robot to empty the mailbox every day?
03:23 rue_bed hmm
03:23 rue_bed not much time
03:24 rue_bed takes 22 days to get stuff from china
03:38 any97599421 Ethan is sitting under the stairs trying to die by overheating his core, because he doesn't want to be taken from his familiar people, or be disassembled
03:39 any97599421 strangely, when his skin gets glowing red hot, his skin and clothes don't catch on fire
03:43 any97599421 great, she's going to reprogram him so he feels no pain or regret or empathy
04:04 any97599421 groceries
04:04 any97599421 or, later
08:23 any26113212 http://pinktentacle.com/2007/03/bionic-hand-with-can-crushing-grip/
08:24 any26113212 A team of researchers from the Tokyo Institute of Technology (TIT) claim to have developed the world's first electromechanical prosthetic hand with a grip strong enough to crush an empty beverage can.
08:24 any26113212 This bionic hand weighs a little more than 300 grams and has a grip strength of around 15 kg (33 lbs)
08:49 any26113212 seems there was a Brit tv show called Humans that was about robots (hubots, synths, etc)
09:10 any26113212 thi sis all wierd
09:10 any26113212 there's two versions of "humans"
09:12 rue_house its 300 grams cause the actuators aren't part of it
09:13 any26113212 ah, the 100% Swedish (with english subtitles) and the 100% Brit in english language
09:19 any26113212 "multiple fox detected on reboot"
09:19 any26113212 "no, you detected 'faults', not 'fox'. So did anything interesting happen?"
09:20 any26113212 "yes, several faults chased some rabbits around the yard"
20:33 mMoon rue_shop2
20:42 any78339527 The Big Bang Theory season 9 premieres Monday, September 21, on CBS.
20:50 mMoon That shows not too hot
21:18 rue_bed hey
21:18 rue_bed mMoon, dont forget to unplug and cover compressor
21:18 any78339527 alfalfa
21:18 rue_bed yea, less weeds
21:19 any78339527 softer, more nuricious
21:19 any78339527 and nutricious
21:19 rue_bed ok so
21:20 any78339527 ready, get set, sew!
21:20 rue_bed I'm low on energy, keep falling sleeep,
21:20 rue_bed freq sympotoms of being ill
21:20 any78339527 or having spent too much time on thisplanet
21:21 rue_bed its like, I'm fighting an infection or something
21:21 rue_bed but, I'm beleived to be ok
21:21 rue_bed and my memory has gone for a dump
21:22 y78339527 throws some piracetam and adrafinial at
21:22 zhanx wife is mad i keep pacing to think
21:22 zhanx so get this
21:22 zhanx got a new steering box for my truck
21:22 zhanx spend all day to change it
21:22 e_bed passes on the strange drugs, but is cur
21:23 zhanx the new one rotates backwards
21:23 rue_bed haha
21:23 rue_bed howd that happen?
21:23 zhanx no clue
21:23 rue_bed its got to be upside down?
21:23 zhanx i am taking it back tomorrow to get another one
21:23 any78339527 pitman arm on the wronf side of the shaft, remove, flip, reinstall
21:24 rue_bed oo
21:24 zhanx rue three 3 holes and it mount one on top and 2 two on the sides and remember I am a mechanic
21:24 rue_bed left hand version?
21:24 zhanx any78339527, and my steering arm will hit my springs, no dice the box when compare to the other literally rotates wrong
21:24 rue_bed or ^^ pitman arm...
21:25 zhanx comma aftter no dice
21:25 y78339527 stops dicing the
21:25 zhanx rue, kat it's all custom and no the pitman arm. I just don't feel like opening a new steering box and rebuilding it
21:26 zhanx not*
21:26 zhanx oh and when i add fluid pressure to it i thought my steering wheel was gonna rip off from vibrating back and forth
21:26 any78339527 if it's all custom, the box may be off an unknown model
21:27 zhanx thought i reversed the lines but no
21:27 zhanx known model. 98 ford f-250
21:27 zhanx i have a book in my glove box for the parts i use etc
21:28 y78339527 has a F-250 4x4 once , damned idiot of a t
21:28 zhanx and the part numbers on the steering boxes match in the casting. I got a made on friday part
21:28 zhanx this is my ford exploder
21:28 zhanx aka f-250 drive line on an explorer
21:30 y78339527 doesn't
21:31 zhanx tis ok kat, I did all the welding and fabrication on it :) just a bad part
21:33 any78339527 i was pulling a trailer up I-10 on the Nevada side once, in daytime, the transfer case began making noise, idiot garage mechanic tried to get me to put in auto-tranny oil instead of 90wt+ gearbox oil
21:34 zhanx it would have worked for a while
21:34 zhanx not what i would recommend
21:35 any78339527 it had blown oil up out the top, i can only guess it got hot, had water in the oil, which made steam in the desert under load, and frothed it up and out the vent
21:35 zhanx maybe if you were using 4x4
21:35 zhanx or excess water in it
21:35 any78339527 wasn't in 4x4
21:36 any78339527 wasn't sitting in water either
21:36 any78339527 dunno
21:36 any78339527 went somewhere else, had it drained and replaced with 120wt
21:36 any78339527 ran fine
21:36 zhanx i run 80-90 in mine
21:36 zhanx detron vi in my manual and power steering
21:37 zhanx 10w for the engine cause i am lazy and hating changing my oil
21:37 any78339527 90 is best, unless you know it's going to get hot, later i was pulling a huge generator back into the Rockies outa LA, Calif
21:37 zhanx i off road alot so its slow speeds
21:37 any78339527 10w in the engine?? i run a 20-40, 20-50 if i can get it
21:38 zhanx yep
21:38 zhanx sometimes 15-40
21:38 any78339527 yea, but torque or high engine loading can squeeae the oil outs the engine sleeve bearings
21:38 any78339527 my keybd is walking around as i typo
21:49 any78339527 in the olden daze, we wanted the oil to stick to the camshaft lobes, and to the steel timing chains
22:10 any78339527 .
22:50 zhanx 10w sticks to everything
23:00 katsmeow-afk not chainsaw bars/chains
23:01 katsmeow-afk slings off like water, you can hear the metal grinding
23:51 rue_shop3 well I made up some + bar
23:51 rue_shop3 its not great with torque, but its better than I thought in the cantilevered beam department