#garfield Logs

May 27 2023

12:01 AM rue_mohr: aandrew, and you didn't catch the trike project either?
04:39 AM Tom_L: https://us.misumi-ec.com/vona2/detail/110300087170/
04:42 AM Tom_L: https://www.mcmaster.com/products/d-profile-precision-shafts/d-profile-rotary-shafts-5/
04:44 AM Tom_L: the radius length measured across the flat
04:44 AM Tom_L: for a 1" shaft, the flat would be .5" across
04:47 AM Tom_L: that ratio seems to hold true for metric and imperial
07:59 AM aandrew: rue_mohr: I caught the trike here
12:41 PM rue_mohr: Tom_L, ah nice.
12:49 PM rue_mohr: ooo I went a bit too deep on my flat, interesting
12:54 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280622.jpg
12:58 PM rue_mohr: Its a potentiometer in the form factor of a 9g servo
12:58 PM rue_mohr: so, if I have a robot built for 9g servos, I can make a control puppet vesion
01:25 PM rue_mohr: a buddy just dropped off some EV batteries, hybrid anyhow
01:25 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280623.jpg
01:25 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280624.jpg
02:20 PM rue_shop5: hahah, there equiv to like 3 U1 batteries!
02:25 PM rue_shop5: this looks a LOT like "were going to use a fancy battery so that nobody notices how small it is"
05:10 PM rue_shop5: aandrew, your battery questions
05:10 PM rue_shop5: I got a better answer at work
05:10 PM rue_shop5: the tech said there is an IEC standard for it
05:11 PM rue_shop5: I think he said 1066
08:00 PM Tom_L: rue_mohr, you will find a standard for everything
08:01 PM rue_mohr: :)
08:01 PM Tom_L: what was that old wiring called that used ceramic insulators tacked to the studs?
08:02 PM Tom_L: single wire on opposing studs etc
08:02 PM rue_mohr: knob and tube
08:02 PM Tom_L: i knew it was xxx and tube but couldn't remember
08:03 PM rue_mohr: so
08:03 PM rue_mohr: I'm assembling a solar pump to take water up to the garden
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280626.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280628.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280630.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280631.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280632.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280634.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280635.jpg
08:03 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1280636.jpg
08:05 PM Tom_L: you broke a tap
08:05 PM rue_mohr: specifially my last HSS 6-32 tap
08:05 PM rue_mohr: I should have had more in stock...
08:06 PM rue_mohr: had to use a tungsten one, it was not fun
08:07 PM rue_mohr: I wonder where I should go for more
08:07 PM * Tom_L looks in his garage
08:07 PM rue_mohr: not sure if I want cheap from china or overpriced from N/A
08:07 PM rue_mohr: the cheap ones tend to shatter like that
08:08 PM Tom_L: what are those pumps that use a cylinder to move uphill?
08:08 PM rue_mohr: I'v not learned warning signs of them starting to fracture before they go
08:08 PM Tom_L: they get tight
08:08 PM rue_mohr: archamedies screw?
08:08 PM Tom_L: no
08:08 PM Tom_L: like a double cylinder thing
08:09 PM rue_mohr: <no suitable matches found"
08:09 PM rue_mohr: >
08:09 PM Tom_L: https://www.youtube.com/watch?v=XyF90UmVDvo
08:12 PM rue_mohr: never seen it before
08:12 PM Tom_L: https://www.youtube.com/watch?v=9LgS7G46Zfc
08:12 PM Tom_L: maybe a better example
08:12 PM Tom_L: dunno
08:13 PM Tom_L: ram pump.. that's what it's called
08:13 PM Tom_L: slow and steady
08:14 PM rue_mohr: erm, sus
08:15 PM rue_mohr: so I gathered up another pump to circulate water from the pond to a rad in the house/shop and back for cooling
08:16 PM Tom_L: i thought that whole thing was capoot
08:16 PM rue_mohr: not he boiler
08:16 PM rue_mohr: this would be a cooling thing
08:16 PM rue_mohr: using water from the pump and back
08:16 PM rue_mohr: kasldfj
08:16 PM Tom_L: well?
08:16 PM rue_mohr: using water from the pond and back
08:17 PM rue_mohr: thru a radiator in the house, with a fan
08:17 PM Tom_L: well is constant ~50F
08:17 PM rue_mohr: for room cooling
08:17 PM rue_mohr: dont have a well that stays wet
08:17 PM rue_mohr: I checked the 1m well today
08:17 PM rue_mohr: its got a few inches in it
08:17 PM rue_mohr: I should try to dig it deeper
08:18 PM rue_mohr: moon dropped off two prius batteries today
08:19 PM rue_mohr: their NiCd
08:19 PM Tom_L: saw them
08:19 PM rue_mohr: oh
08:19 PM Tom_L: didn't know they were prius
08:19 PM rue_mohr: I should see if I still have a rad that doesn't leak
08:19 PM rue_mohr: I think I have a transmission cooler
08:20 PM rue_mohr: their equiv to about 3 12V 25Ah in energy
08:20 PM rue_mohr: er 35Ah
08:20 PM rue_mohr: U1
08:21 PM rue_mohr: turns out I was quite close on the cut for the D shaft I did
08:22 PM Tom_L: pretty easy to remember that standard
08:22 PM rue_mohr: yea
08:22 PM rue_mohr: no I wasnt' close, I must not have been awake when I checked that
08:22 PM rue_mohr: 5mm shaft, the D is 4mm wide
08:22 PM rue_mohr: huh
08:23 PM Tom_L: not quite halfway
08:23 PM rue_mohr: but now I know
08:23 PM Tom_L: i dunno how to calculate the cord height
08:24 PM Tom_L: i'm sure it's not that hard
08:24 PM rue_mohr: thats what cad software is for
08:24 PM rue_mohr: two parallel lines and use the intersection
08:24 PM rue_mohr: geometric solution
08:25 PM rue_mohr: well, its cool, I could take ANOTHER stab at the trike
08:25 PM rue_mohr: the tire is holding air now, this is good
08:26 PM rue_mohr: I learned today I should print a whole bunch of 90 degree brackets
08:26 PM rue_mohr: I did up the aluminum ones on the bandsaws/brake/drillpress but it was not fast
08:26 PM rue_mohr: could set up the cnc to drill em
08:27 PM rue_mohr: printed ones would be ok for lots of stuff
08:27 PM rue_mohr: I can hunt for ONE more bearing for the trike too
08:28 PM rue_mohr: I hoped I could get away without a support and the answer is no
08:28 PM rue_mohr: if I can solve the rest of the drive system, then its working
08:28 PM rue_mohr: needs lots of work, but it would operate
08:40 PM rue_shop5: - order 6-32 taps
08:40 PM rue_shop5: - find the venting battery in the shop UPSs
08:40 PM rue_shop5: - find bearing for trike
08:40 PM rue_shop5: - move bearing on troke
08:40 PM rue_shop5: - look for radiator for house/shop cooling
08:43 PM rue_shop5: - design and print lots of L brackets
08:49 PM rue_shop5: 6006N
08:50 PM rue_shop5: erp
08:50 PM rue_shop5: 6005N
08:51 PM rue_shop5: found one!
08:56 PM rue_shop5: - order 6-32 taps
08:56 PM rue_shop5: - find the venting battery in the shop UPSs
08:56 PM rue_shop5: - move bearing on troke
08:56 PM rue_shop5: - look for radiator for house/shop cooling
08:56 PM rue_shop5: - design and print lots of L brackets
08:56 PM rue_shop5: - make hubs and retainers for the 3rd trike bearing
09:17 PM Tom_L: is ISO purely a metric standard?
09:19 PM Tom_L: https://www.handymath.com/cgi-bin/arc18.cgi?convrad=in&convarc=in&convwid=in&convhei=in&convapo=in&convtet=deg&convare=in&rad1=1&arc1=&wid1=.5&hei1=&apo1=&tet1=&are1=&submit=Calculate&numnum=1&moreless=1&decimal=5
09:24 PM rue_mohr: I'm not sure
09:38 PM rue_mohr: http://ruemohr.org/%7Eircjunk/projects/trike3/slide.htm