#linuxcnc Logs
Jul 19 2020
#linuxcnc Calendar
02:04 AM snakedGT is now known as snaked
03:05 AM veegee: Hmmm the fork widening/squeeze mechanism on my Allis Chalmers forklift randomly stopped working
03:05 AM veegee: I don't have enough experience with hydraulic systems to be able to tell what's wrong just from the behaviour
03:06 AM veegee: But when I actuate the lever, I can see the hydraulic hose jerk but the forks don't actually move
03:06 AM veegee: The rest of the system works though. I can raise/lower, tilt, rotate just fine
03:07 AM Loetmichel: veegee: sounds like the other end of the cylinder isnt opening the valve
03:07 AM Loetmichel: i would guess that either the valve block failed or the "other" end of said cylinder is somehow plugged
03:08 AM veegee: Yeah that could be it. This machine was always going to be a restoration project
03:08 AM veegee: Doesn't sound like a difficult fix
03:08 AM Loetmichel: or can you see BOTH end hoses jerk?
03:08 AM veegee: Good question, I didn't specifically look for that. I'll check tomorrow
03:09 AM veegee: I was just playing around with it to get the engine warm before changing the oil. The mechanism was working fine and then the next minute just stopped working
03:11 AM Loetmichel: s/cylinder/hydraulic ram, sorry, german showed thru
03:11 AM Loetmichel: :-)
03:12 AM veegee: Very well could be a jammed valve mechanism, that does sound about right
03:12 AM veegee: For how old this thing is, I'm amazed it works at all
03:13 AM veegee: And perfectly too, aside from this incident today
03:13 AM veegee: Got this one for $2,000 including like a pallet with 1,000kg of spare parts
03:14 AM veegee: There's definitely replacement hydraulic components. Just have to dig through the pile to find the right part
03:15 AM veegee: Loetmichel what would be your guess if both of the hoses jerk?
03:19 AM * Loetmichel is a bit wary of hydraulics. Have seen a worker getting cut in half by a fan of oil after a pressure relief valve failed and caused a main pressure line on a tractor to rupture.
03:19 AM Loetmichel: veegee: then my guess would be a mechanically blocked ram
03:21 AM Loetmichel: or, if present: a valve block at the ram that prevents movement if both sides are without pressure (usually on stabilizers, to prevent sagging if a hose fails)
03:21 AM veegee: Are you serious? Like his whole body sliced in half?
03:21 AM Loetmichel: yes
03:22 AM veegee: All the way through?
03:22 AM Loetmichel: 500++ bar hydraulic oil and a ruptured steel pipe is like a water jet. the only thing that held that poor guy together was his spine
03:23 AM Loetmichel: the rest was cut cleanly thru
03:23 AM veegee: Did he make it?
03:23 AM Loetmichel: nope
03:23 AM veegee: god damn, never even thought of that
03:23 AM veegee: You saw this with your own eyes in real time?
03:23 AM Loetmichel: yes
03:23 AM veegee: that's horrific
03:23 AM XXCoder: that sucks :(
03:24 AM Loetmichel: at age 15 to top it off
03:24 AM Loetmichel: was a school internship at a company that made tractor implements for farmers
03:25 AM veegee: I've been preoccupied setting up my pneumatic system and studying its safety. I have multiple pressure relief valves, multiple filters, etc.
03:25 AM Loetmichel: they tried to make a tractor with TWO sicle bars AND a hay loader on the back.
03:25 AM veegee: Ok I have to check the relief valves on this thing then before I mess around with it further
03:25 AM Loetmichel: so they had a second hydraulic pump on the PTO and somehow that overpressure valve failed
03:26 AM Loetmichel: the moment one floored the engine the hydraulic line bursted.
03:27 AM Loetmichel: and the worker just was at the wrong place at the wrong time
03:27 AM Loetmichel: thats a picture you have problems to forget to be honest.
03:28 AM XXCoder: yeah it has huge ponental of ptsd
03:28 AM veegee: I would think they'd have redundant pressure relief valves
03:30 AM veegee: Also 500 bar is not that high, hydraulic hoses have a burst pressure of like 2,000 bar
03:30 AM veegee: But I guess not back then
03:30 AM Loetmichel: IIRC the hydraulic system was designed for 400
03:31 AM Loetmichel: may have been more
03:31 AM Loetmichel: than 500
03:31 AM Loetmichel: i am 51 now, it was a LONG time ago
03:32 AM Loetmichel: i dont know if overpressure valve is the correct term
03:33 AM Loetmichel: those hydraulic pumps have a valve integrated that lets oil flow from the output back to the input when the pressure gets to high, thats how the pressure is regulated
03:33 AM Loetmichel: and said valve was apparently mounted incorrectly
03:34 AM veegee: Oh yeah /that/ valve
03:34 AM Loetmichel: so the moment the engine revved up it overwhelmed the other valve of the (smaller) original pump and exploded a line
03:34 AM veegee: That's not a safety component, that's a core working component of a hydraulic system
03:35 AM Loetmichel: yes
03:36 AM Loetmichel: as i said: they tried to get more volume by putting a second bigger pump parallel to the original one.
03:36 AM XXCoder: im sorta puzzled on why they didnt simply remove smaller one
03:36 AM Loetmichel: and power it via PTO
03:37 AM XXCoder: simpler system is better
03:37 AM Loetmichel: XXCoder: it was a "versuchswerkstatt", brandnew tractor, they probably didnt want to modify it that much
03:37 AM XXCoder: ah i see
03:38 AM Loetmichel: (whats the english term for that?)
03:38 AM XXCoder: brand new tractor?
03:38 AM Loetmichel: "versuchswerkstatt"
03:38 AM XXCoder: whats it mean, literally?
03:39 AM Loetmichel: "mechanics shop for developing new implements" in that case
03:39 AM Loetmichel: the shop where they tested new ideas
03:39 AM XXCoder: ahh yea hmm
03:39 AM XXCoder: protoyyping shop maybe
03:39 AM Loetmichel: yeah, thats about it
03:40 AM XXCoder: prototyping
03:40 AM Loetmichel: i meant to say: sometimes in those shops they dont use all the safety measures aviable.
03:41 AM Loetmichel: point of me mentioning it was that hydraulics can be REALLY dangerous if you dont know exactly what you do.
03:41 AM XXCoder: indeed
03:43 AM Loetmichel: i have heard (not seen) of people that "just" got a small spray of high pressure hydraulic oil on the hand and had a small black blister... and died a couple days later of blood poisoning
03:44 AM XXCoder: yeah thats how needless injection works
03:44 AM Loetmichel: so even if its not as gory it still can be deadly
03:44 AM XXCoder: why didnt they go to toxicity center?
03:44 AM Loetmichel: because they didnt notice it was an injection, they thought they got pinched somehow.
03:45 AM XXCoder: i suppose they didnt think it wasnyt injection
03:45 AM XXCoder: yeah
03:49 AM Loetmichel: anyways, enough horror stories, just be careful when handling hydraulics, veegee, will you?
03:49 AM veegee: Yeah I'll be sure to do so
03:49 AM XXCoder: just read some more bad news. fetuses can get covid from mothers
03:50 AM Loetmichel: hmm, shouldnt that be a non issue? they dont use their respiratory systems just yet.
03:51 AM XXCoder: you do realize it affects all organs
03:51 AM Loetmichel: i didnt.
03:51 AM XXCoder: lungs primarily but not sole
03:51 AM XXCoder: it ranges from virtially no more than annoying cough to dead by lungs failure
03:51 AM XXCoder: there is people who lungs is affected but more organs is affected too
03:52 AM XXCoder: and it dont always require stuff like having debites, health issues etc
03:53 AM XXCoder: there is some evidence with small percentage that has covid triggered debites
03:53 AM XXCoder: as well as small percentage with brain issues by covid
03:53 AM XXCoder: percentages may be small, but would you roll a dice? I wouldnt
04:02 AM Loetmichel: me neither. but to be honest: i am old and never had that much a problem with illnessses. even the first "sars" got me only lightly. i am not really frightened for myself. if i contract covid19 somehow: no big deal (Probably).
04:03 AM Loetmichel: that doesent mean i want to infect others with it, not all are so lucky health wise.
04:03 AM XXCoder: indeed
04:03 AM XXCoder: cloth masks dont protect self but others
04:06 AM XXCoder: i wear mine at work everyday. its not great but well
04:12 AM veegee: I wear only P100 with organic vapour cartridges
04:13 AM veegee: I don't wear those bullshit cloth/surgical masks
04:13 AM XXCoder: fancy.
04:13 AM XXCoder: those can help protect others by blocking speaking droplets and such
04:13 AM XXCoder: it dont really block on intake
04:32 AM Loetmichel: veegee: sounds a bit "over the top"... i get some strange looks when i wear the 3dprinted mask already ;)
04:33 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17785&g2_imageViewsIndex=1
04:33 AM Loetmichel: that one ;)
04:34 AM XXCoder: you should get https://www.noupoi.net/bottle-cap-thread-calculator.html
04:34 AM XXCoder: oops paste fail
04:34 AM XXCoder: https://twitter.com/AndrewASink/status/1284131211129040898/photo/1
04:35 AM Loetmichel: nope, no filters. doesent work ;)
04:35 AM XXCoder: yeah its closer to cloth that it stops droplets but dont really protect self
04:36 AM Loetmichel: no, i meant: cloth stops droplets by soaking them up
04:36 AM Loetmichel: this mask is made of filament, so no soaking
04:39 AM XXCoder: yeah would be dripping off bottom of mask. fun!
04:39 AM XXCoder: unless he covers rear with some sor of cloth to wick water away and dry
05:11 AM JT-Cave: morning
05:11 AM XXCoder: yo
05:21 AM JT-Cave: my granddaughter has covid-19
05:21 AM XXCoder: :( she ok?
05:22 AM JT-Cave: I guess she is, my daughter is a RN
05:22 AM XXCoder: risk risk definitely
05:22 AM XXCoder: *high
05:22 AM JT-Cave: yea they live north of Houston
05:31 AM XXCoder: hope they recover
05:31 AM XXCoder: in likely they will
06:27 AM Tom_L: morning
06:33 AM SpeedEvil: Not tobe a downer, but https://blogs.bmj.com/bmj/2020/06/23/paul-garner-covid-19-at-14-weeks-phantom-speed-cameras-unknown-limits-and-harsh-penalties/
06:34 AM SpeedEvil: Doctor 95 days in, still suffering 'unrelated' symptoms.
06:34 AM SpeedEvil: I post, as exercising too hard when you're 'better' from a viral illness is what has destroyed my life following very similar set of symptoms.
07:42 AM Centurion-Dan2 is now known as Centurion_Dan
07:46 AM commavir_ is now known as commavir
07:50 AM sa is now known as Guest43174
10:29 AM jymmmm: morning
12:29 PM jymmmm: Ok, buy a scope & amp clamp adapter, or 8 new COP for $30 (with a shitty lifetime warranty) https://www.amazon.com/Ignition-Lincoln-Compatible-C1454-C1417/dp/B00EOXZLG2
12:56 PM jymmmm: Eh, $60 for coils and plugs, not too bad
01:02 PM Tom_L: nope
01:09 PM jdh: how many miles/years do you have on them?
01:27 PM Jymmm: Almost 100K on the car, about 40K on the existing plugs/coils
01:31 PM gregcnc: that's cheap. are they any good?
01:53 PM jdh: I've never replaced one
01:59 PM CaptHindsight: I've tried the cheap coils in the past since they were so cheap. Some last some don't. Like most low cost Chinese made products.
02:00 PM CaptHindsight: I don't use any of it on something that I rely on. And I try to avoid counterfeits.
02:47 PM Jymmm: CaptHindsight: oh I dont doubt they are crap, but swapping out 8 and resolves the poor gas mileage and power loss , at least then I've isolated the cause. then if they fail i can just replace indovdiaually as needed
02:51 PM CaptHindsight: you don't have to justify your actions to me
03:04 PM JT-Cave: we had 1030 deaths in Missouri yesterday and 1029 today, I guess someone came back to life
03:06 PM Jymmm: it was a false positive death
03:06 PM Jymmm: kill em again to retest
03:09 PM JT-Cave: well it's only 92°F with a heat index of 105°F so back to work
03:09 PM Tom_L: what we workin on today?
03:12 PM _unreal_: well I'm milling the new drive nut for my cnc machine upgrade
03:12 PM _unreal_: first of 3 major parts
03:13 PM _unreal_: and the only EASY fast part. the others are both aluminum
03:16 PM CaptHindsight: we had that heat and humidity yesterday
03:16 PM CaptHindsight: true test of the new AC
03:18 PM CaptHindsight: it's been this 7 day wave, H&H peaks on weekends, 80F midweek
03:22 PM Tom_L: 93°F currently
03:29 PM miss0r2: numbers are unclear, but its been a sweatbox 'round here today
03:30 PM Tom_L: unclear? spectacles fogged up?
03:30 PM Tom_L: ...hate when that happens
06:23 PM perry_j1987: hows it going guys
06:24 PM perry_j1987: well darn it the pm-25mv is backordered now
06:32 PM jdh: I'd be surprised if all chinese mills weren't
06:41 PM veegee: Lightning struck a pole and knocked out 2 phases at the office
06:41 PM veegee: Just restored
06:41 PM veegee: It was actually a brownout somehow with the line hovering between 40 and 80 VAC. How does that happen?
06:41 PM veegee: Other phase inducing a current in the knocked out phases?
06:42 PM veegee: But it was enough power to keep my cat's water filter fountain pump running so that's good
06:43 PM veegee: And shitty UPS of course let the shitty lead acid batteries drain all the way. Need to add a protection circuit to cut off power before batteries drop below 50% depth of discharge. Now the batteries barely hold a charge
06:44 PM veegee: Or build an external LiFePO4 battery bank that maintains charge always within 30-70% for a lifetime of service
07:16 PM flyback: veegee,
07:16 PM flyback: what ups
07:16 PM flyback: I can help
07:17 PM flyback: *CANUCK*
07:18 PM JavaBean: hey hye, no picking on our canuckdian friends and neighbors... they might stop sharing poutine with us
07:20 PM flyback: BMCCC
07:20 PM flyback: BMCC
07:20 PM flyback: BITE MY "CANUCK".........................CANUCK!
07:20 PM * flyback HURLS veegee AT JavaBean
07:20 PM * JavaBean catches veegee safely, remembers the treaty
07:40 PM veegee: flyback CyberPower CP1500PFCLCD
07:40 PM veegee: I have 2 of those for the networking equipment
07:40 PM veegee: and I have an OL1000RTXL2U for the critical servers
07:41 PM veegee: the rackmount one is a double conversion unit and I love it. I made it quieter by adding a custom fan controller. It also has external battery terminals. Great unit
07:41 PM veegee: The smaller consumer class units are just ones I had at home but now using them at the office for the network rack but I really should put a double conversion unit for those as well
07:42 PM veegee: The OL1000RTXL2U was on and sipping the random 40-60 VAC to charge its batteries the whole time lol
07:42 PM veegee: I love it
07:45 PM veegee: Lead acid batteries really need to be babied to give acceptable service life. LiFePO4 is my all time favourite, until lithium titanate is available anyway
07:45 PM veegee: I have a bunch of LiFePO4 cells cycling in a battery tester constantly for the past 2 years, several cycles per day to 100% DoD and they're _still_ going strong
07:47 PM norias: i had sort of an idea
07:48 PM norias: write a parser for gcode paired with a post processor for a specific CAM
07:48 PM veegee: public execution of trump?
07:48 PM veegee: Oh, right, the other thing
07:48 PM norias: that bounds checks the outputted ...
07:48 PM norias: you know what, fuck you
07:48 PM veegee: LOL why
07:48 PM veegee: Go on with your idea
07:48 PM norias: For better or worse, that's the elected President of the United States
07:49 PM norias: and that's some bullshit
07:49 PM veegee: oh no, you're one of _those_
07:49 PM norias: do you... believe he is not the elected President ?
07:49 PM norias: is this a conspiracy theory thing?
07:49 PM jdh: go away
07:49 PM veegee: of course he is, your retarded population voted him in
07:49 PM XXCoder: hes no question elected president and he is #1 worse president ever
07:49 PM norias: i'm not debating his capability
07:50 PM norias: i'm just saying, he is legally the President
07:50 PM jdh: go away
07:50 PM norias: and it's bullshit to joke about assasination
07:50 PM norias: think about what you said
07:50 PM XXCoder: assassination would free up pence. which is likely worse
07:51 PM norias: if we start there, things only go down hill
07:51 PM veegee: damn dude take it easy
07:51 PM veegee: go back to your G code idea
07:51 PM norias: no, because i held the same position with President Obama
07:51 PM norias: when some fucks in my shop said the same shit
07:51 PM norias: but they were within arms reach
07:51 PM veegee: I wish I were within arms reach of you
07:52 PM norias: I bet, internet tough guy
07:52 PM roycroft: shut up, both of you
07:52 PM norias: i came to talk about machining, not politics
07:52 PM roycroft: then don't talk about politics
07:52 PM veegee: like I said, go back to the G code idea dawg
07:52 PM perry_j1987: boy the "chips" are really flyin in here tonight :P
07:53 PM roycroft: and especially, nobody talk about assassinations, no matter who the intended victim might be
07:54 PM roycroft: that is not even remotely civilised discourse
07:54 PM norias: yeah, i'm good on this chan
07:55 PM norias: ya'll want to defend political assassination, have fun.
07:55 PM * roycroft just finished making his kumiko grid cutting jig, and while it works brilliantly, he's unhappy with the way the brass bits came out
07:55 PM roycroft: and now i'm confuse
07:55 PM roycroft: d
07:56 PM roycroft: imploring the channel to not talk about assassinations is "defending" assassination
07:56 PM roycroft: another reason not to raise that topic here (or anywhere)
07:56 PM XXCoder: not nessicaly. expecially in specifc topic channel
07:57 PM roycroft: the world used to be a nicer, friendlier place before 2017
07:57 PM roycroft: i hope we get back to a place like that
07:58 PM roycroft: anyway, brass is really hard (for me at least) to freehand shape and make look decent
07:58 PM roycroft: i do a lot better with steel
08:01 PM veegee: Isn't it "technically" more "machinable" than steel?
08:01 PM veegee: for whatever that's worth
08:01 PM veegee: well leaded brass at least
08:02 PM veegee: Oh by the way, that one way valve arrived and I tested it
08:03 PM veegee: Very solid build. The threads were very clean, way better than what I expected. Very low reverse leakage. I could probably make it zero leakage by adding an O ring or something like that.
08:04 PM veegee: But the internals for the 1" seem like they're a bit restrictive for a 1" pipe setup. I think I'll add a 2" version with reducers so it doesn't become a bottleneck
08:05 PM veegee: Thick walls too, should definitely be able to take 300+ PSI
08:09 PM JavaBean: veegee, you mind letting me have more info on your lifepo4 test
08:09 PM veegee: sure what do you need?
08:10 PM veegee: I was an idiot and didn't log a V/t graph to my computer but I know generally the start capacity and what it is right now
08:10 PM roycroft: most brasses are
08:11 PM JavaBean: how long is a cycle and what is the charge/discharge current range, and sure a comparison between the start and current capacity... also, what form is it? 18650?
08:11 PM roycroft: and i am using c360, which is a leaded alloy that machines well
08:11 PM roycroft: but brass is really grabby
08:11 PM roycroft: it takes a really light touch when machining it
08:11 PM roycroft: it's best machined with negative rake tooling
08:14 PM veegee: JavaBean A123 18650 cell (APR18650m1-B) unfortunately no longer manufactured but they have newer cells that are even better. Nominal capacity is 1,100 mAh. My cycle settings are as follows: 5 minute rest period between cycles, 1A charge to 3.6V, 1A discharge to 2.7V. Initial measured capacity was ~1,000 mAh (due to safer discharge voltage cutoff), latest reading is at 850mAh. Been constantly cycling for
08:14 PM veegee: about 600 days
08:16 PM veegee: So I'm guessing just above 6000 cycles.
08:17 PM veegee: These are genine A123 nanophosphate cells though. I wouldn't expect such performance from knockoffs. Also cycled indoors at an average ambient temperature of 20ºC, no direct sunlight, but in the path of a gentle breeze which probably kept them cool
08:18 PM veegee: Incredible performance, the internal resistance is still really low as well. No conventional Li ion can do this
08:18 PM pink_vampire: hi everyone
08:19 PM JavaBean: very interesting, i wonder if it would work for a "off-grid" 48v system
08:19 PM veegee: Yes it would
08:19 PM veegee: If you want truly lifetime performance, get NiFe (nickel iron) cells
08:20 PM veegee: their capacity does not measurably degrade even after like 100,000 cycles
08:20 PM veegee: But very heavy, very low energy density, perfect for off grid
08:20 PM veegee: Also if you choose even more conservative voltage limits for any li-ion system including lifepo4, you get even better cycle life
08:21 PM _unreal_: milling the first major part for my current working cnc machine REVAMP
08:23 PM veegee: JavaBean also LiFePO4 can act as a drop in replacement for lead acid since the voltages line up perfectly for conventional lead acid chargers
08:24 PM JavaBean: with a good bms, please don't let anyone think that a bms isn't important with lifepo4
08:24 PM veegee: Well yeah it's important
08:24 PM _unreal_: you want a dedicated charge controller
08:24 PM veegee: But lifepo4 won't kill you or blow up if you abuse it
08:24 PM veegee: it's a safe chemistry
08:25 PM JavaBean: also, NiFe is only 50% charge efficiency
08:25 PM veegee: yeah LiFePO4 is the best all round general purpose chemistry
08:25 PM _unreal_: WTF did I do???? i have a big scrap on my shin and I dont know when or how I did it?
08:25 PM _unreal_: and its starting to sting like a MOFO
08:25 PM JavaBean: unreal, welcome to my world
08:25 PM _unreal_: scrape
08:25 PM _unreal_: just hapend in the past 30min
08:26 PM veegee: _unreal_ put some polysporin with the analgesic on it
08:26 PM veegee: that takes away the pain
08:26 PM _unreal_: like I have anything
08:26 PM _unreal_: hay pain lets you know your alive
08:27 PM _unreal_: its like a shaved a T into my right shin? I dont freaking get it
08:27 PM JavaBean: got any good ideas for lifepo4 cells... looking at 48v 1000ah
08:27 PM _unreal_: quadcopter :)
08:32 PM veegee: JavaBean I prefer high voltage systems but yeah 48V is fine. Look into the prismatic cells with yttrium added
08:32 PM veegee: apparently that improves low temperature performance
08:32 PM veegee: They're meant for electric vehicle use
08:32 PM JavaBean: and, that is where i have been looking lately
08:33 PM JavaBean: also, what higher voltages have you been using for a battery system?
08:34 PM veegee: 340V in order to make a 240V full sine wave
08:35 PM veegee: Well more than 340V since 340V is the minimum
08:35 PM JavaBean: are you making your own inverters and mppt chargers and shit??
08:35 PM veegee: just inverter
08:36 PM veegee: transformerless 3 phase IGBT inverter
08:37 PM veegee: I find that the fewer power magnetics I need, the happier I am in life
08:37 PM JavaBean: you aren't wrong. but i will be doing shop stuffs, and a friend of mine will be running alot more shop/tech stuffs
08:38 PM veegee: Yeah the 240V specifically for running 240V 3 phase motors
08:38 PM JavaBean: so looking at ways to avoid cut down on loss
08:40 PM JavaBean: how are you charging your battery?
08:41 PM flyback: veegee, che king
08:41 PM flyback: I am not conviced thats a float chargermodel
08:42 PM flyback: that's a pure sinewave
08:42 PM flyback: that will defintely have battery manage akso
08:43 PM flyback: if it flattened the batteries then something is very wrong with the unit
08:43 PM flyback: or one of the packs has a bad cell
08:43 PM veegee: They just drain the batteries very low
08:44 PM veegee: that alone hurts lead acid a lot
08:44 PM flyback: since it's a smart ups
08:44 PM flyback: it should be a way to change the min voltage
08:44 PM veegee: I hope so
08:44 PM veegee: I can also just put a custom circuit between the pack and the UPS to cut off power early
08:46 PM flyback: yah or https://www.amazon.com/Battery-Protection-Undervoltage-Controller-Under-Voltage/dp/B07H4T3LS7
08:46 PM flyback: lemme look for a few mins on nut-ups guide
08:46 PM _unreal_: and cutting the nut out
08:47 PM JavaBean: veegee something like this? https://www.amazon.com/Lithium-Iron-Phosphate-LiFePO4/dp/B08161ZBSB/
08:49 PM veegee: Yup, but look at suppliers that deal with this sort of thing specifically: https://www.evwest.com/catalog/index.php?cPath=4
08:49 PM veegee: https://www.evcomponents.com/
08:49 PM flyback: or
08:49 PM veegee: https://shop.gwl.eu/LiFeYPO4-batteries-12V-1-1/
08:49 PM flyback: use a diode mabye but that will confiuse chargeing nm
08:50 PM veegee: I have ideal diode controllers
08:50 PM veegee: and a whole bunch of other fun stuff
08:51 PM flyback: ok
08:51 PM flyback: but I wonder if it has a eeprom programming lang like some apc's you can tweak the min/max batt voltage
08:51 PM veegee: these are very modern designs
08:51 PM veegee: unless it has a trim pot, I'm not even going to bother reverse engineering them.
08:54 PM flyback: no it's a eeprom value
08:54 PM flyback: no circuit hacking
08:55 PM flyback: example of apc
08:55 PM flyback: http://www.apcupsd.org/manual/manual.html#configuring-your-eeprom
09:05 PM JavaBean: veegee, familiar with LFP? https://www.smartpropel.com/48v-500ah-lithium-battery/
09:07 PM flyback: yeah they do make lithium drop in packs
09:08 PM flyback: supported to replace 12v sla's
09:12 PM flyback: you could also try emailing cyberCANUCK support
09:12 PM flyback: see if they have a way to change the shutdown voltage
09:17 PM flyback: jackpot
09:18 PM flyback: dunno if your series has this but
09:18 PM flyback: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiyqPva3trqAhWDoXIEHb8xDZQQFjADegQIBhAB&url=https%3A%2F%2Fdl4jz3rbrsfum.cloudfront.net%2Fdocuments%2FCyberPower_UM_PR2200ELCDRTXL2U.pdf&usg=AOvVaw1lhnhYm9NVwGMXpIKYDTce
09:20 PM * flyback bites CMorley
09:20 PM flyback: eh?-hole!
09:21 PM CMorley: ?
09:21 PM flyback: eh-hole = canadian
09:21 PM flyback: :P
09:21 PM flyback: welcome to channel :P
09:21 PM CMorley: I am Canadain
09:21 PM * flyback has been biting canadians for 20 yrs on irc