#linuxcnc Logs

Nov 28 2020

#linuxcnc Calendar

12:25 AM CaptHindsight: mrec: are you doing this in Linux or winders?
12:31 AM CaptHindsight: mrec: are you using an SD-card for a drive/block device with an x86 PC?
12:37 AM mrec: CaptHindsight: I just bought a usb stick, I'm retrying
12:37 AM mrec: I tried another sd-card that one failed while copying the data at 2gb
12:39 AM CaptHindsight: mrec: older PC?
12:41 AM mrec: the sdcards weren't that old but probably not the best ones.
12:41 AM mrec: I'm retrying now
12:43 AM CaptHindsight: mrec: SD-card reader on USB?
12:45 AM mrec: yes
12:46 AM mrec: I usually don't work much with USB sticks
12:46 AM CaptHindsight: how much ram is in the PC?
12:47 AM CaptHindsight: unless the SD-card is bad you usually don't have these problems on new hardware
12:47 AM CaptHindsight: with Linux
12:48 AM CaptHindsight: be back later
12:48 AM mrec: hmm I don't know maybe 2-4 gb the usb stick installation is already beyond where it stopped before
01:24 AM mrec: yay pc crashed during the latency test
01:25 AM XXCoder: infile =
01:25 AM XXCoder: doh mrec onder what happened
01:28 AM mrec: the PC is old .. I should get another one
01:28 AM mrec: it even crashed in the bios after rebooting
01:40 AM XXCoder: that weird stuff may be because bios battery is dead
01:40 AM XXCoder: that can cause many strange stuff to happen
02:07 AM gloops: what model is the PC?
02:07 AM XXCoder: programming file
02:08 AM gloops: cant remember the age of my cnc computer, pretty old though
02:08 AM gloops: 2008 i think
02:08 AM XXCoder: python. js recently then python lol
02:08 AM XXCoder: damn rusty
04:07 AM Tom_L: morning
04:39 AM Deejay: hi
05:00 AM JT-Cave: morning
05:02 AM XXCoder: https://youtu.be/8zb92v5Vz40
05:02 AM XXCoder: fun project it seems. tony is working with master sheet man to make dustpan
05:02 AM XXCoder: tony part is handle for it. he uses cnc
06:38 AM JT-Cave: LOL booting up a PC and it says NO keyboard detected press F1 for setup
06:38 AM XXCoder: yeah old one
06:38 AM XXCoder: it'll exist as long as we have keyboards lol
08:20 AM mrec: that pc seems to be weird .. vertically ok horizontally crashes, maybe something's loose
08:21 AM mrec: the environment is killing everything in taiwan... everything's corrodes quickly
08:21 AM mrec: everything corrodes quickly*
08:33 AM Tom_L: JT-Cave, windows or linux?
08:35 AM gloops: taiwan mrec is that where you are?
08:49 AM mrec: yes, southern taiwan, tainan
08:54 AM rs[m]: finally. the small village "Fucking" is renaming itself to an alternative spelling "Fugging". no more tourists stealing signs.
10:49 AM _unreal_: are you fugging kidding
10:57 AM rs[m]: unreal: look yourself, coordinates 48.067636839916354, 12.862092231370108
12:30 PM miss0r4: 'evening
12:30 PM miss0r4 is now known as miss0r
12:33 PM Tom_L: hey
01:08 PM ziper: i ground the open end of a wrench way down to do a job i doubt I will ever do again. is there any hope in tempering the wrench to still handle light jobs without busting the jaws, or should i just toss it?
01:12 PM _unreal_: trying to figure something out
01:12 PM _unreal_: https://www.cnccat.com/cnccat_photos/files/DS_DD8727T4V1_EN.pdf
01:12 PM _unreal_: I just got my motor driver
01:12 PM _unreal_: I have the 3 motor drivers version that link is to the 4. SAME thing just one extra driver. What is the decay POT?
01:14 PM _unreal_: >9 the #9 section . Attenuation dial switch setting
01:14 PM _unreal_: I dont know WTF it is?
01:14 PM t4nk_freenode: it is used to manually shorten the lifespan of any axis-homing switch of your choice
01:16 PM _unreal_: right......
01:16 PM Tom_L: my sherline had a ramp pot i could adjust for the 'on' ramp up time to full
01:16 PM _unreal_: wholy shit they make a 5 axis version of that driver as well
01:17 PM _unreal_: I cant find a description of its function
01:17 PM t4nk_freenode: that must be the 648th driver board you bought, _unreal_ ?!
01:17 PM _unreal_: 649 GOD keep up
01:17 PM t4nk_freenode: CAUTION: This driver do not contain the anti-plug backward circuit, thus positive-negative reversal is prohibited! Otherwise, the driver will be damaged!
01:17 PM Tom_L: he'd rather get 100 bad ones instead of 1 good one
01:17 PM t4nk_freenode: it will be a DOA POS soon ;)
01:17 PM _unreal_: maybe
01:18 PM _unreal_: but the " resistors " that burnt up on the other one's are big heavy ceramic one's on this driver
01:18 PM t4nk_freenode: lol :)
01:18 PM Tom_L: makes no difference
01:18 PM t4nk_freenode: in that case: bring the amps :))
01:18 PM Tom_L: the brake resistor on my vfd was huge compared to the external one i added and it gets hotter than a pistol
01:18 PM Tom_L: the external one stays cool
01:20 PM * Tom_L shrugs
01:20 PM t4nk_freenode: yeh, 100 bad ones vs 1 good one... sounds a bit how I like to run things myself I'm afraid :)
01:21 PM _unreal_: tom I have no freaking idea what this " . Attenuation dial " does
01:21 PM t4nk_freenode: look it up then, man
01:24 PM _unreal_: I am trying
01:24 PM _unreal_: I dont know what its function is
01:24 PM _unreal_: I dont know what its adjusting
01:24 PM Tom_L: turn it and find out
01:24 PM Tom_L: ramp up or ramp down on something
01:25 PM t4nk_freenode: (Attention: 1, the polarity of the power supply mustn’t be reversed. <--- multiple warnings of the same kind... better be careful )
01:27 PM _unreal_: t4nk_freenode, I'll make sure I color code it
01:30 PM t4nk_freenode: it's probably a current limiter, _unreal_
01:31 PM t4nk_freenode: Ilimit=(Vref/Rsense)*Attenuation Ratio
01:33 PM _unreal_: then it has two current limiting features
01:33 PM _unreal_: which is confusing
01:34 PM t4nk_freenode: I apologize heavily for that!
01:36 PM _unreal_: could be a chopper freq adjust
01:36 PM _unreal_: which would be part of the current limiting
01:36 PM _unreal_: but does not say :(
01:36 PM t4nk_freenode: you're the expert :b
01:37 PM t4nk_freenode: just wire it up man, turn some knobs and be done with it
02:06 PM t4nk_freenode: just don't hold back on sharing your misfortunes though
02:06 PM t4nk_freenode: hehe.. I'm about to set out for a filing session myself!
02:09 PM miss0r: ziper: All men should have a box/drawer of specially ground wrenches.
02:09 PM miss0r: ziper: and heated and bend ones for the odd job :).
02:10 PM miss0r: AND if you didn't manage to heat it to a point where it glows like the sun, you are fine. it has not lost it strength(no more than the material you removed anyway)
02:11 PM miss0r: And on those words, I will check out for bed. See you around
02:11 PM t4nk_freenode: the only obvious thing was: benT instead of bend, ..no worries :b
02:18 PM Eric__: I feel like I drank too much coffee, which is weird because I only drank one cup
02:19 PM Eric__: Tom_L, I was always impressed that Haas used an electric stove element for their braking resistors
02:20 PM Eric__: anyone ever suspended a keyboard under a TV wall mount? I guess I'm going to have to fab something
02:25 PM t4nk_freenode: I guess it's just like mounting a moose head or bear head to the wall :))
02:25 PM t4nk_freenode: okokok, I'll stop it.
02:26 PM JT-Shop: hmm, sanding the end grain cutting board if it gets warm it moves...
02:27 PM JT-Shop: Eric__, yea I have one on my CHNC
02:27 PM rs[m]: unreal: the only thing that would make sense is standby-current
02:30 PM buzzmarshall: the decay is normally used to make a stepper motor more responsive to the input steps coming into the driver
02:30 PM buzzmarshall: normally a lot of drivers incorporate into the actual design
02:30 PM buzzmarshall: but some driver chips actually allow you to program or set the parameters
02:31 PM buzzmarshall: in a roound about way uses the h-brigde to drive the winding in the motor opposite to the change in pulse via current
02:32 PM buzzmarshall: makes the current collapse quicker in winding changes
02:33 PM buzzmarshall: so the motor overall is more responsive to the driver itself
02:33 PM buzzmarshall: at least thats my understanding of its idea
02:34 PM buzzmarshall: i came across it years ago while working with TI's 8711 driver/controller chips
02:34 PM rs[m]: buzzmarshall: you say they are chopping the decay current?
02:36 PM rs[m]: maybe it is a mixed fast/slow decay setting and with the pots you adjust the delay, in this way the silk screen even makes sense
02:36 PM buzzmarshall: the way ti's docs explained it was that its used to feed neg voltage to bring the fets or drivers to reverse the motor while running
02:36 PM buzzmarshall: kinda like a brake i quess
02:38 PM buzzmarshall: so when the bridge changes the winding via the fets it counter-acts any normal inertia in the motor
02:38 PM buzzmarshall: making the motor respond quicker to the driver
02:39 PM rs[m]: fast decay uses the motor as generator and slow decay shorts the windings
02:41 PM buzzmarshall: normally its something kinda designed by the driver maker but some of the programable control chips make available for implementers to use
02:42 PM buzzmarshall: brb... phone
02:43 PM rs[m]: unreal: if you want something that works now, get a gecko g540
02:52 PM Eric__: JT-Shop, no pictures of it though
02:52 PM Eric__: JT-Shop, you run to 7i37 on that machine?
03:00 PM JT-Shop: that one has a 5i20, 7i33 and 7i37
03:00 PM JT-Shop: you need a photo of the keyboard tray?
03:26 PM _unreal_: arg.. so I now have my new motor controller now I just need that damn bearing I ordered
03:39 PM Tom_L: JT-Shop, pm
03:39 PM Tom_L: cave
04:11 PM JT-Shop: k
06:15 PM _unreal_: ok finally got the x axis wired into the high voltage inputs
06:15 PM _unreal_: and now all limits are working correctly
06:15 PM _unreal_: fucking wierd, its clearly a coding issue but what ever
06:16 PM _unreal_: its working also found an interesting blurb on an other page over the motion controller I'm currently using. and it states that inputs should be no less then 12uS I set that and that corrected most of the motor skipping I've been dealing with
06:16 PM _unreal_: interesting
06:17 PM _unreal_: doing a dry run right now
06:17 PM pfred1: high voltage rock and roll!
06:17 PM _unreal_: hv being 12v
06:18 PM pfred1: no less often means use more
06:18 PM pfred1: try double and go down from there
06:19 PM pfred1: 24 us still isn't bad
07:04 PM t4nk_freenode: if they'd written: no less THAN, then it would have made more sense
07:04 PM * t4nk_freenode allowed himself this, for there has been some filing finished!
07:05 PM t4nk_freenode: now I gotta sand some :|
07:37 PM _unreal_: ok doing some more dry runs
07:37 PM _unreal_: found an issue where one of the screws let go
07:37 PM _unreal_: errr the nut fell off
07:38 PM t4nk_freenode: ah, you're making a disassembler!
07:40 PM _unreal_: no it just vibrated off
07:40 PM _unreal_: or it didnt have one and I tapped metal that decided not to hold
07:40 PM Tom_L: are the screws out of round?
07:40 PM _unreal_: regardless it now has a nut on the backside
07:41 PM _unreal_: the x motor pulls the timing belt pully to a side
07:41 PM Tom_L: too tight?
07:41 PM _unreal_: which caused the threaded rod to start to rub on the side wall at a certain point
07:42 PM _unreal_: no the upper retainer screw worked its way loose
07:42 PM _unreal_: I tapped the metal but its not very thick
07:42 PM _unreal_: aluminum in that area so I just tightened it again and put a nut to lock in it place on the back side
07:42 PM _unreal_: good to go now
07:43 PM _unreal_: now I'm just doing dry runs trying to find things that fail
07:43 PM _unreal_: like feed rates
07:43 PM _unreal_: been fine tuning the max rapids
07:44 PM pfred1: how fast are you going?
07:44 PM _unreal_: 500mm/min
07:45 PM _unreal_: 1/8th stepping, 4.8:1 pully reduction
07:45 PM _unreal_: to threaded rod 13TPI
07:45 PM pfred1: so 20 IPM?
07:45 PM _unreal_: so about 3039steps per inch
07:45 PM _unreal_: sure
07:46 PM _unreal_: I have not done the math but that sounds about right
07:46 PM pfred1: what voltage you said 12?
07:46 PM _unreal_: 36
07:46 PM pfred1: oh
07:46 PM Tom_L: heh, mine is ~40k steps/in iirc
07:46 PM _unreal_: motors are 36
07:46 PM pfred1: you check the current?
07:46 PM _unreal_: set to 3.5amps
07:46 PM pfred1: they stepper motors?
07:46 PM pfred1: don't worry what it is set at
07:46 PM _unreal_: on motors that are rated for 3 and they are hardly worm
07:47 PM pfred1: measure what they're actualy drawing
07:47 PM _unreal_: man that machine is "ringy
07:47 PM _unreal_: I have dual switching psu's each provides 36v 11amps
07:47 PM pfred1: steppers don't like over current
07:47 PM _unreal_: they are not worm
07:47 PM pfred1: they're stupid that way
07:48 PM _unreal_: so I hardly think I'm over driving them
07:48 PM pfred1: not warm is a good sign
07:48 PM _unreal_: I dont trust the china motor controllers anyways
07:48 PM _unreal_: having had 2 of them fry on me
07:48 PM _unreal_: just got my replacement driver today a 3 in one
07:48 PM _unreal_: of the same flavor
07:48 PM pfred1: don't disconnect them powered up
07:49 PM _unreal_: but this replacement has big thick ceramic resistors in place of the SMD sense resistors the burt up one's have
07:49 PM _unreal_: and the 2 current working drivers
07:49 PM pfred1: inductive flyback is the #1 cause of dried drives
07:49 PM _unreal_: dried drives?
07:49 PM pfred1: fried drives even
07:49 PM _unreal_: aahh
07:49 PM _unreal_: and there it goes again just lost steps
07:50 PM Tom_L: slow the pwm pulses down some more
07:50 PM pfred1: slower?
07:50 PM pfred1: he's already doing 20 IPM
07:50 PM * flyback bites pfred1
07:50 PM Tom_L: and lost steps
07:50 PM pfred1: go faster!
07:51 PM pfred1: flyback I'm realy getting into induction lately
07:51 PM _unreal_: god I LOVE this wireless wixhc PENDENT
07:51 PM pfred1: I still have to find a reliable way of separating ferrites
07:51 PM flyback: heh
07:51 PM flyback: I wanted to build a crystal raduio
07:51 PM pfred1: I tried the heating method and cracked one
07:52 PM flyback: can't do it
07:52 PM pfred1: I had two big ass irons on it
07:52 PM flyback: cause I can't wrap a coil worth shit
07:52 PM pfred1: I want to make a transformer winder
07:52 PM flyback: my fingers and eyes are shot
07:52 PM pfred1: was a project i put on hold a while back
07:52 PM _unreal_: well I take that back the motors are rather worm not to hot to tuch but hot
07:52 PM pfred1: was making a rotation counter
07:52 PM _unreal_: been running for the better part of an hour
07:52 PM _unreal_: non stop
07:53 PM pfred1: warm is to be expected
07:53 PM pfred1: for real measure the current your motors are drawing
07:53 PM _unreal_: but they are no hotter then my motors on my home machine when they get upto temp
07:53 PM pfred1: I can walk you through how to do it
07:53 PM _unreal_: naa
07:53 PM Tom_L: they will get the hottest when idle unless the driver has idle current shutdown
07:53 PM pfred1: until you measure it you'll never really know
07:53 PM _unreal_: I have a MM that could do it but dont feel like it
07:53 PM pfred1: then live in ignorance
07:53 PM _unreal_: thenew motor controller I'm going to have to
07:54 PM _unreal_: because it has a POT rather then switches
07:54 PM pfred1: if the current isn't right steppers run lke crap
07:54 PM _unreal_: not to pleased about that
07:54 PM pfred1: don't believe those switches
07:54 PM pfred1: the chinaman that put them on don't give a hoot about you
07:54 PM _unreal_: I'm fine living in ignorance. I dont want to keep those motor controllers in the long run
07:55 PM _unreal_: rather get some nice gecos WHEN I can afford anything
07:55 PM _unreal_: next week I need to get the big mount adapter built
07:55 PM pfred1: good TB6600s are fine
07:55 PM _unreal_: for z
07:55 PM _unreal_: I DID get 4000mm/min with the drivers that blew
07:55 PM pfred1: I run them and I go 200 IPM
07:55 PM pfred1: which is like 5000mm/m
07:56 PM _unreal_: 400oz/in MOTORS
07:56 PM pfred1: the nest ones have a pot too and not switches
07:56 PM _unreal_: nest ones? nice?
07:56 PM pfred1: holding torque is meaningless
07:56 PM pfred1: unless you don't plan on your machine moving
07:56 PM _unreal_: oh pfred1
07:57 PM Tom_L: pfred1, you measure the current on one of the windings?
07:57 PM _unreal_: https://www.duxe.ru/upload/iblock/27e/27ede6e354c0d14072bc82bd17ceb10c.pdf
07:57 PM pfred1: it is running torque that counts
07:57 PM pfred1: Tom_L yes
07:57 PM flyback: unreal you blew stepper drivers?
07:57 PM * flyback has to say it
07:57 PM flyback: STUPID CANUCK
07:57 PM flyback: STUPID CANUCK
07:57 PM flyback: STUPID CANUCK
07:57 PM flyback: STUPID CANUCK
07:57 PM _unreal_: no idea what the Attenuation dial is for
07:57 PM pfred1: Tom_L but with a microstepping drive it is a bit tricky to do
07:57 PM _unreal_: flyback, they are CHEAP china bs
07:58 PM flyback: try heatsinking them better
07:58 PM pfred1: Tom_L what i do is I set the speed really low and just move it a little at a time until i get a high reading
07:58 PM _unreal_: yes I blew two they have come to find out ZERO protection. I ran them a fraction of there MAX specs and they blew
07:58 PM pfred1: _unreal_ I have cheap chinese TB6600s and they're great
07:58 PM _unreal_: IS THE COMPANY that builds those still in business
07:58 PM pfred1: you do have to set them up right though
07:59 PM pfred1: the v1.2s are good ones
07:59 PM _unreal_: the one's I have the company does not exist any more
07:59 PM flyback: https://www.bgmicro.com/ICSLMD18245T.aspx
07:59 PM flyback: he had a stepper driver
07:59 PM flyback: dammit can't find it
08:00 PM _unreal_: step resolution 1 and 1/2 LOL
08:00 PM pfred1: this is what i have https://forum.arduino.cc/index.php?topic=425528.0
08:01 PM flyback: https://www.bgmicro.com/ICSAD815.aspx
08:01 PM _unreal_: do you have a pendent?
08:02 PM _unreal_: I'm loving my 6 axis pendent
08:02 PM _unreal_: the wireless range is amazing BTW
08:02 PM pfred1: here ya go https://www.aliexpress.com/item/32291656037.html
08:02 PM _unreal_: whb05b-6 6 axis controller
08:02 PM pfred1: those are the drives ya want
08:03 PM flyback: https://www.goldmine-elec-products.com/prodinfo.asp?number=G25073\
08:03 PM _unreal_: I purchaed the last one of these https://www.amazon.com/gp/product/B07PVDW2T7/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
08:03 PM _unreal_: just got it today
08:03 PM flyback: https://www.goldmine-elec-products.com/prodinfo.asp?number=G24921
08:03 PM pfred1: that's a junk board
08:03 PM _unreal_: got it for $16
08:03 PM flyback: https://www.goldmine-elec-products.com/prodinfo.asp?number=G24923
08:03 PM _unreal_: pfred1, no argument but I have no money right now
08:03 PM flyback: https://www.goldmine-elec-products.com/prodinfo.asp?number=G24918
08:04 PM pfred1: that isn't a 6560 board?
08:04 PM _unreal_: so much bs has happend to me this year I'm $ devistated lost all my savings
08:04 PM flyback: what happened
08:04 PM pfred1: I made my first stepper drives
08:04 PM pfred1: I used 6560 ICs too but i used them right
08:05 PM pfred1: not how the commercial boards are made
08:05 PM pfred1: they use a horsecrap method of current control
08:06 PM flyback: https://www.bgmicro.com/ICSA3959B.aspx
08:06 PM pfred1: TB6600 better chip
08:08 PM t4nk_freenode: lol _unreal_ heheh... mannnnn you must about own every single driver board out there by now
08:10 PM pfred1: t4nk_freenode that's because they don't want to work right with what they have
08:11 PM pfred1: I'm stoked I'm getting a new portable oscilloscope
08:11 PM pfred1: I could have used it setting my CNC machine up
08:11 PM Tom_L: rigol?
08:11 PM pfred1: ah no nothing that good just a chinese one
08:12 PM Tom_L: those are quite popular now
08:12 PM Tom_L: and not that badly priced
08:12 PM pfred1: FNIRSI-1C15
08:12 PM pfred1: it's like one of them multimeter scopes
08:12 PM pfred1: I don't want to hook my line scope up to some stuff I'm planning on building
08:12 PM t4nk_freenode: nice
08:13 PM pfred1: yeah for a cheapie it is supposed to be not bad
08:13 PM t4nk_freenode: I'd like to have a scope too.. any
08:13 PM pfred1: and if I do manage to blow it up I won't cray too hard
08:13 PM pfred1: cry too hard even
08:14 PM pfred1: I'm getting into building SMPS
08:14 PM pfred1: they're the wave of the now so I figure time to get up to speed with them
08:15 PM _unreal_: pfred1, my MM is a scope
08:15 PM pfred1: although I do love my big old transformers
08:15 PM unterhaus_: it's nice to have my monitor down at eye level, and the keyboard balances on the base well enough that I can type
08:15 PM _unreal_: I have a
08:15 PM _unreal_: hantek2d42
08:16 PM pfred1: hanteks are legit
08:16 PM pfred1: I have a Tektronix 2336
08:16 PM pfred1: it still works but every time I power it up I wonder anymore
08:16 PM unterhaus_: I have an old Tek. hackaday had some hacks for it
08:17 PM unterhaus_: its twin went in the dumpster
08:17 PM pfred1: that's a shame
08:18 PM _unreal_: I wonder what hacks there are for the one i have if any
08:18 PM t4nk_freenode: was that the one with the upgrades that were locked inside the firmware of a lesser model?
08:18 PM _unreal_: it has some empty ports
08:18 PM _unreal_: SD and usb
08:20 PM pfred1: I wanted to get this one but nothing made it clear it had English https://www.aliexpress.com/item/1005001315019879.html
08:20 PM pfred1: I saw a video where someone was using it in Enlish after i ordered the other one
08:24 PM ziper: how important is it that I actually turn my motorcycle brake pads on a lathe? can't i just lap them on a flat?
08:25 PM ziper: by pads I mean rotors, obviously
08:25 PM pfred1: I never heard of machining pads
08:25 PM pfred1: oh the rotors
08:25 PM pfred1: it depends on if you have floating calipers
08:25 PM pfred1: which I think everything is today
08:25 PM pfred1: but I've had cars with fixed calipers
08:26 PM pfred1: then you want your rotors true
08:26 PM Tom_L: it's a good idea to turn them
08:26 PM pfred1: if they're just glazed I've sanded them
08:26 PM pfred1: like with an orbital sander
08:26 PM pfred1: it works
08:27 PM Tom_L: probably not alot of material to turn on a bike rotor and still be good
08:28 PM flyback: why did you lose your savings unreal
08:28 PM pfred1: flyback the usual
08:28 PM pfred1: drugs, booze and hookers
08:29 PM flyback: lame
08:30 PM Rab: ziper, I believe proper rotor turning takes off significant material, more than you would want to lap.
08:30 PM pfred1: we can't all be Hunter Biden after all
08:30 PM ziper: the rotors have concentric scoring, but since they are still on the bike I can't tell anything about flatness
08:31 PM Rab: ziper, any wiggle when you brake?
08:31 PM ziper: what if I just stuck some fine sandpaper inbetween the rotor and the pad and ran that around a while?
08:31 PM pfred1: yeah if they're out of round you'll know it
08:31 PM pfred1: out of flat whatever
08:31 PM Tom_L: ziper, you'd just burn up the paper
08:31 PM Rab: ziper, how much is a new rotor?
08:32 PM pfred1: if they're scored you'll rip up your new pads fast
08:32 PM ziper: the previous owner put new pads. I'm still looking for rotor part numbers
08:32 PM pfred1: ziper there is a thing called bedding
08:32 PM ziper: Tom_L, what if I put flood coolant?
08:32 PM pfred1: bedding in new pads
08:33 PM pfred1: when we did brake jobs we'd ride around the block with the brake on lightly to bed them in
08:33 PM Rab: ziper, of course you want to replace the pads too if you replace the rotor.
08:33 PM Rab: ziper, do you have a mill?
08:34 PM ziper: not one set up
08:34 PM Tom_L: it's like an oil change, i don't change it unless i change the filter too
08:34 PM Rab: And no lathe?
08:34 PM Tom_L: you change one you do both
08:34 PM ziper: only a benchtop
08:34 PM ziper: I could try and get the mill and bigger lathe set up
08:34 PM ziper: if they still work
08:34 PM Tom_L: either get new rotor with new pads or turn the old one
08:35 PM Rab: Sure there's no shop in town that can do it? AutoZone used to do rotors for $10, here (when they didn't claim there wasn't enough material left).
08:35 PM pfred1: or accept that you'll get reduced life out of your pads
08:35 PM ziper: I rather assumed that was a thing of the past, but maybe I should call around
08:36 PM pfred1: for the most part machinng rotors is a thing of the past
08:36 PM ziper: how would you mount such a thin workpiece to a lathe anyway?
08:36 PM pfred1: with the cheap foreign parts
08:36 PM Tom_L: have you even priced a new rotor?
08:36 PM Rab: What bike is this?
08:36 PM pfred1: last time I did a brake job rotors were $25 a piece i was like give me the whole set
08:36 PM Tom_L: might not even be worth your time turning
08:37 PM ziper: 1997 bmw f650
08:37 PM Rab: Front rotor?
08:37 PM ziper: yeah
08:37 PM _unreal_: just remember DONT breath any of the dust comming from the breaks
08:37 PM pfred1: why not?
08:37 PM _unreal_: it is asbestos
08:38 PM _unreal_: break pads are made from asbestos
08:38 PM pfred1: as best as us can!
08:38 PM pfred1: asbestos was a mafia scam
08:38 PM Tom_L: https://www.motorcycleid.com/1997-bmw-f650-brake-rotors-components/
08:38 PM pfred1: you know how much they made doing remediations?
08:39 PM _unreal_: https://www.asbestos.net/products/brake-pads/
08:39 PM pfred1: I mean sure don't chop the stuff up and snort it
08:39 PM Rab: Heh, that was my first result...looks like $150 for rotor and pads.
08:40 PM pfred1: I have an asbestos blanket I use for sweating pipes
08:40 PM Rab: But there are cheaper options on eBay, if they're legit. Probably best to track down the actual part number, though.
08:40 PM Tom_L: https://www.aliexpress.com/item/32963093392.html
08:40 PM Tom_L: :)
08:40 PM pfred1: now burning your house down that's unhealthy
08:41 PM Rab: _unreal_, your link isn't too convincing. "Asbestos brake pads may still be present on older vehicles still in service. These pads are still installed on various off-shore machines."
08:41 PM pfred1: Raybestos are great pads!
08:41 PM Rab: Not to detract from the point that regardless of composition, brake dust isn't good to breathe.
08:42 PM Tom_L: neither is crack
08:42 PM ziper: i dont let that stop me
08:42 PM pfred1: pfft I've worked on job sites where you couldn't see your hand right in front of your face the dust was so thick
08:42 PM ziper: I guess I will get the 150 dollars ones and hope they're right
08:42 PM ziper: no way am I getting the aliexpress
08:42 PM Tom_L: heh
08:42 PM pfred1: what's wrong with ali?
08:43 PM ziper: i would prefer to stop the motorcycle when I want to
08:43 PM ziper: and not when the metallurgical properties of my brake rotor want to
08:43 PM pfred1: everything comes out of China today anyways
08:44 PM pfred1: the Chinese are better at smelting steel than anyone else is right now
08:44 PM ziper: yes, but I want that mfg attached to a modicum of quality control
08:44 PM pfred1: they've invested in the infrastructure to do it
08:44 PM buzzmarshall: its a bike... who needs a front brake to begin with
08:44 PM pfred1: they bought up whole steel mills out of Germany
08:45 PM pfred1: I watched a documentary about it
08:45 PM pfred1: just came in and took everything
08:46 PM Tom_L: ziper, go get a genuine BMW one then
08:46 PM pfred1: OEM is the way to go
08:46 PM Rab: buzzmarshall, I've ridden motorcycles without a functioning front brake, but I don't plan to do it again.
08:46 PM Tom_L: pay 2x the $120 price
08:46 PM pfred1: yeah but what's the price if you can't stop?
08:47 PM ziper: 350 dollars for OEM
08:47 PM buzzmarshall: bmw = singer sewing machine , cant be that hard to stop
08:47 PM buzzmarshall: lol
08:47 PM pfred1: I always say it is more important to be able to stop than go
08:47 PM ziper: thats 15 percent of what i paid for the whole thing
08:48 PM ziper: what do you call the thing that you use to bolt your part directly to the headstock instead of using a chuck?
08:49 PM Tom_L: back plate?
08:49 PM pfred1: a plate?
08:49 PM pfred1: dogs?
08:50 PM ziper: oh wait, I wouldn't need anything like that would I, I could just use the flat part of the jaws to make sure the rotor was square, right?
08:51 PM pfred1: you could use an indicator
08:58 PM ziper: thanks all
08:58 PM ziper: I have decided to just ignore the issue and ride the bike instead
09:10 PM Rab: Yeah man, life's not about stopping it's about going.
09:11 PM Rab: Seriously, if there are new-ish pads that are already bedded into the rotor, you might as well use up the life they have.
09:58 PM t4nk_freenode: https://postimg.cc/gallery/BXV4zyW .... finally done filing :))
09:58 PM XXCoder: 3d printed switches?
10:00 PM t4nk_freenode: well spotted
10:04 PM renesis: rab: stopping faster = going faster before stopping
10:04 PM * renesis did the maths
10:04 PM XXCoder: lol. though curious why want print em rather than buy em
10:05 PM renesis: that seems somewhat suicidal
10:05 PM t4nk_freenode: you talking to me renesis?
10:05 PM renesis: did you make the switches?
10:06 PM t4nk_freenode: yes
10:06 PM renesis: then yesy
10:06 PM renesis: -y
10:06 PM XXCoder: esy dunno what that word is. ;)
10:06 PM t4nk_freenode: you could have made that remark for a lot of other reasons
10:06 PM t4nk_freenode: but anyhow
10:06 PM renesis: omg
10:07 PM renesis: oh
10:07 PM t4nk_freenode: as low power switches.. they are about a million times more sturdy
10:07 PM renesis: yeah i guess also related to bad brakes
10:07 PM t4nk_freenode: but it's a personal thing ;) I like making my own stuff
10:09 PM Rab: renesis, faster, faster, until the thrill of speed overcomes the fear of death.
10:10 PM t4nk_freenode: wondering if there's some material you could cast these in... maybe there's some material that will be suited for high power
10:10 PM * renesis pours some champagne out of his shoe
10:10 PM renesis: for the race homies
10:11 PM t4nk_freenode: f1 tomorrow?
10:11 PM renesis: guess who will win?
10:11 PM renesis: and yes, f1 for the next two weeks in a row after, too
10:11 PM renesis: covid is kinda cool
10:13 PM renesis: not even gonna lie, ive fallen asleep watching a bunch of races this season
10:13 PM t4nk_freenode: it's all rigged,
10:13 PM t4nk_freenode: and LH is a huge idiot diva
10:14 PM renesis: at this point, i wouldnt even mind another year of the HAM show, i dislike him less than shumacher, so i wouldnt mind him taking the championships record
10:14 PM renesis: he kinda is
10:14 PM renesis: well, i would say more of a dork than an idiot
10:14 PM t4nk_freenode: it's beyond everything I say
10:15 PM Tom_L: there is racing outside of NASCAR??
10:15 PM Tom_L: :)
10:15 PM renesis: but mfkr can drive, and he's just compensating for opression by ron dennis for like a decade
10:15 PM t4nk_freenode: I'd like to see a montage of all of vettel's spins though..
10:15 PM renesis: oh man, why you gotta get all serious
10:16 PM renesis: hey so do you know how ferrari cheated?
10:16 PM t4nk_freenode: he's made me laugh countless times over the past seasons
10:16 PM renesis: rab will like this
10:16 PM renesis: rab: ferrari was getting around fuel flow limits by pumping *between* flow sampling pulses
10:17 PM renesis: vettel is probably the chillest mfkr there off track
10:18 PM renesis: will be exciting to see him and nando midfield next season