#emc | Logs for 2011-07-09

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[00:00:24] <andypugh> There are 4 of the 0.02" ones here for $30. http://cgi.ebay.co.uk/4-ph-Horn-R105-1802-0-05-MG12-020-Min-Bore-Boring-Bar-/400067050503
[00:00:42] <PCW> Must be gettiing punchy with all this routing TTGH
[00:00:43] <PCW> So the tip of that bar is < .020?
[00:00:49] <andypugh> Yes.
[00:01:35] <factor> using the resin for a mold , did not work spend the past hour digging my part out of plastic and still hav enot gotten back, even used mold release
[00:01:47] <factor> will have to go to the internet to get the right stuff
[00:02:01] <andypugh> I used mine to bore a 3 degree taper 7mm hole for a ballscrew extension and it worked briliantly. Carbide shaft (stiff) and very nicely ground means that it cuts even 1% carbon steel beautifuly.
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[00:03:43] <PCW> that little tip mus be pretty brittle if its carbide (Have experience breaking many PCB drills)
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[00:04:31] <andypugh> But I have no idea why you would be boring a 0.02" hole. Perhaps because it will be in the right place, which is hard to guarantee with a tiny drill? Or, I suppose, for tapered holes.
[00:04:59] <andypugh> Actually, thinking about it, carefully shaped nozzles will be the application, I bet.
[00:05:19] <PCW> Pretty exotic (yeah proto nozzles)
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[00:11:35] <jtektool> want to add some data to the wiki but pages are read only anyone here got the info so that i can
[00:12:29] <jtektool> i got these dugong drives working with data direct from manufacturer
[00:12:36] <jtektool> step time 1000
[00:12:44] <jtektool> step space 2500
[00:12:57] <jtektool> d hold 1000
[00:13:07] <jtektool> d setup 1000
[00:14:21] <Jymmm> red the botom of the wiki page
[00:15:40] <jtektool> oh i c it now
[00:16:17] <jtektool> doh!
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[00:25:07] <jtektool> that was easy duh
[00:25:18] <andypugh> OK, time to log before I get too depressed that yet another user wants to write a multi-gear gearchanger comp.
[00:27:38] <SWPadnos> andypugh, he's not talking about a gearchange comp like yours, he's talking about a user prompt to change gears, like hal_manualtoolchange
[00:27:50] <SWPadnos> (at least, he may not know enough about it to know that that's all he needs)
[00:28:07] <andypugh> Well, and a HAL module to do the calcs for the VFD.
[00:28:57] <andypugh> Not sure that he needs the latter when the former could set a parameter for a scale function, though.
[00:28:58] <SWPadnos> sure, so he may not realize that one of the existing gearchange components will do that, and all he has to do is add the prompt part
[00:29:42] <andypugh> The existing component only does 2 gears.
[00:29:53] <SWPadnos> yeah, I know mine is limited that way
[00:30:07] <SWPadnos> sorry I haven't had a chance to look at yours. was it included?
[00:30:11] <SWPadnos> (in EMC)
[00:30:51] <andypugh> It was, then it was pulled as it had the scale inverted. Les Newell submitted one too.
[00:31:12] <SWPadnos> err. wouldn't "righting" the scale solve that problem?
[00:31:21] <andypugh> You would think so.
[00:31:28] <SWPadnos> or just give it another name and deprecate the 2-gear one
[00:31:37] <SWPadnos> so it doesn't break anything
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[01:15:18] <nicko> Quick question for Mesa users ...
[01:15:23] <nicko> anyone online ?
[01:16:06] <andypugh> Online, not necessarily awake
[01:16:20] <SWPadnos> ask, and someone might answer
[01:16:45] <SWPadnos> but don't expect the answer immediately - most in Europe and the US are asleep
[01:16:59] <SWPadnos> well, maybe not most of the US, but still
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[01:17:31] <nicko> hi andy...
[01:17:37] <nicko> I think I just colved my issue
[01:18:06] <nicko> the GND/even pins on the IDC headers are on the left
[01:18:11] <nicko> NOT the RIGHT
[01:18:39] <SWPadnos> depending on which way you hold the board ...
[01:19:15] <nicko> holding the board with the text upwards (using gravity as 'down')
[01:19:35] <nicko> ;)
[01:19:48] <andypugh> Yes, that's the way.
[01:19:51] <SWPadnos> pin 1 has a square pad, all the others are round
[01:20:08] <SWPadnos> so if you can look at the back of the board, you can always see which row is evens and which is odds
[01:20:37] <nicko> the differential pairing made it have some functionality still (I was getting encoder signals in EMC for instance) - but other things were pooping out
[01:21:11] <nicko> good tip SWPadnos - I'll remember that one
[01:22:05] <nicko> +5v from pin '50' (actually 49) turning the PC off when I connected it to the GND of my oscope kinda pulled the 'what the flip is going on' switch
[01:22:22] <SWPadnos> heh
[01:22:30] <nicko> I dont like seeing sparks coming off my PCI cards!
[01:22:37] <SWPadnos> it's not highly recommended
[01:22:40] <nicko> seems ok though
[01:22:52] <andypugh> It seems quite hard to destroy the Mesa cards. (luckily)
[01:23:10] <nicko> well, the next few days will test them I guess
[01:23:29] <nicko> bad polarity !! heel! get in behind !!
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[01:26:44] <factor> So urithane woudl be able to make a small gear mold
[01:26:53] <factor> and where can I get it cheapest
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[01:34:38] <andypugh> factor: Steal it.
[01:34:47] <andypugh> Cheap, high risk.
[01:36:24] <andypugh> And on that unhelpful note, I will bid you goodnight.
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[01:42:51] <factor> heh
[01:42:57] <factor> I fouhnd a cheap spot
[01:43:12] <factor> 3 lbs for 31 bucks
[01:43:23] <factor> that should do it and the right price for me
[01:43:34] <factor> 10 $ a pound
[01:43:36] <factor> sold
[01:45:46] <factor> http://www.smooth-on.com/Urethane-Rubber-an/c6_1117_1147/index.html
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[01:47:17] <factor> I think that is mold, says suitable for casting bla bla
[01:48:49] <factor> looks like it is the casting not the mold, as it should be silicone not urethane
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[02:59:07] <Tom_L> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/probe1.jpg
[02:59:09] <Tom_L> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/probe2.jpg
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[05:42:21] <factor> Found a place yes looks like urethane molding is the cheapest
[05:42:29] <factor> and got it heading my way
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[06:00:22] <mazafaka_> And it's not a screenplay, it's real
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[11:48:15] <jthornton> anyone used one of these drives http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4266375&srkey=ult40366
[11:48:43] <jthornton> the two floppy drives newegg has are junk
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[12:11:06] <Tom_itx> logger[psha]
[12:13:11] <Tom_itx> jthornton, floppys are junk
[12:13:21] <Tom_itx> i get em locally for as cheap as i can find
[12:13:27] <Tom_itx> usually about $10
[12:13:37] <jthornton> might be but ATM I gotta have one
[12:13:48] <jthornton> no one sells them locally
[12:14:04] <Tom_itx> you try cleaning the heads?
[12:14:12] <jthornton> reading the reviews on newegg 1/2 are DOA
[12:14:37] <Tom_itx> tigerdirect = compusa
[12:14:39] <jthornton> no, I need a drive in the new computer
[12:14:48] <jthornton> I didn't know that
[12:14:50] <Tom_itx> i've bought from all 3 sucessfully before
[12:15:16] <jthornton> I usually get my parts from newegg but the floppy drives they carry are junk
[12:15:17] <Tom_itx> i use thumbdrives where i can now
[12:15:30] <Tom_itx> did you see last nights work?
[12:15:47] <jthornton> me too, but I have two mills that are 486 based and use floppies
[12:16:19] <jthornton> no, I missed it
[12:16:20] <Tom_itx> i'd find a usb card for them if it were me
[12:16:29] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/probe1.jpg
[12:16:31] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/temp/cnc/probe2.jpg
[12:17:01] <jthornton> nice
[12:17:33] <jthornton> I don't want to tinker with what works on old systems like them till I'm ready to convert them to EMC2
[12:17:40] <Tom_itx> i doubt i could do threads very good on that old lather or i'd go the other route
[12:19:07] <Tom_itx> i don't blame ya really
[12:19:16] <Tom_itx> i've got a couple old systems i keep goin
[12:19:17] <jthornton> my current plan is to screw the probe assb into the upper housing with 3 small screws just catching the edge of the probe assb
[12:19:45] <jthornton> and use 3 set screws on the top where the BT30 adapter goes to center up the probe
[12:20:00] <jthornton> at least that is my thoughts so far
[12:20:13] <Tom_itx> i considered slotting the bottoms screw holes and doing the same thing
[12:20:33] <jthornton> I did move the balls closer by 1 degree and removed the slot as it is no longer needed
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[12:32:42] <jthornton> did you order your probe yet?
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[12:44:07] <Tom_itx> no
[12:44:15] <Tom_itx> i think i'll get a 3mm one though
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[12:46:26] <jthornton> M3 thread?
[12:46:33] <Tom_itx> i think so
[12:46:37] <Tom_itx> that's all i can find
[12:46:52] <Tom_itx> need a M4 tap :)
[12:47:07] <Tom_itx> ?
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[13:34:01] * JT-Shop just verified my anvil is a 300 LB Griz with a 2" hardy hole
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[14:13:59] <geo01005> wouldn't it be cool to use a lightscribe cd to make a code wheel for and encoder.
[14:16:07] <geo01005> It "could" become trival to make a very high resolution absolute customizable encoder.
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[16:46:05] <tom3p> JT-Shop is thc300.odg yours or Dallurs? ( from the live cd cfg plasma-thc ) i'd like to understand how the axis is switched between Hal and axis/motion.
[16:47:02] <Tom_itx> anybody know how to calculate overbend radius on tubing for given diameters?
[16:47:11] <Tom_itx> conduit
[16:47:17] <Tom_itx> more specifically
[16:47:33] <Tom_itx> not using a bender since it's 50+ " radius
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[17:00:38] <JT-Shop> tom3p: not mine
[17:02:23] <JT-Shop> tom3p: I'm not sure he switches it and I know my thc.comp does not switch the Z only hijacks the position command from EMC
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[17:04:06] <tom3p> JT-Shop, thx, is your thc what i read about with 'man thc'?
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[17:07:12] <tom3p> ah yes, author! thx
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[17:21:13] <tom3p> JT-Shop: is there a config that uses it? i grep'd for 'loadrt thc' in the config dir
[17:21:25] <l0st1nsp4c3> hey guys i'm reconfiguring emc2 and reading up on wiki i must be blind but I cannot find the info i'm looking for
[17:21:42] <l0st1nsp4c3> if i have 10inch of travel on an axis should i set it to -5 to 5 of 0 to 10 in stepconf
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[17:27:03] <JT-Shop> tom3p: there is a config in 2.5 that uses it
[17:27:42] <JT-Shop> 10st1 any way you like
[17:28:02] <l0st1nsp4c3> whats the most common way
[17:28:08] <l0st1nsp4c3> is it for 0 to be the middle of every axis
[17:28:21] <JT-Shop> 0 is usually at one end
[17:28:30] <l0st1nsp4c3> ok perfect
[17:28:34] <l0st1nsp4c3> except for Z right?
[17:28:36] <JT-Shop> just depends on how you program your g code
[17:28:41] <JT-Shop> even z
[17:28:51] <l0st1nsp4c3> interesting
[17:28:54] <l0st1nsp4c3> thanks JT-Shop
[17:29:02] <JT-Shop> on a mill Z0 is usually all the way up
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[17:29:33] <JT-Shop> on my lathe Z0 is as far as possible from the spindle face
[17:29:42] <l0st1nsp4c3> but then to go down it's in the minuses no?
[17:29:47] <JT-Shop> yep
[17:30:06] <l0st1nsp4c3> thanks =)
[17:30:07] <JT-Shop> usually you touch off the tool to the top of the work and set your work offset to Z0
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[17:35:18] * JT-Shop goes back to shucking sweet corn
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[17:51:24] <tom3p> JT-SHop thanks
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[18:13:49] <tom3p> JT-Shop thanks, your comp is used in the plasma-5i20 directory with plasma-5i20 and plasma-demo configs. ( its in the 2.6.0~pre >now< :)
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[18:17:24] <tom3p> cant open a file in the RIP tho, TclError: value for "-initialdir" missing
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[18:24:09] <danimal_garage> 2.6 is out already?
[18:24:20] <tom3p> the file open dialog doesnt appear, but the terminal shows this http://pastebin.com/Q9tqd5cu
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[18:25:08] <jthornton> danimal_garage: 2.4.7 is not out yet
[18:25:09] <tom3p> danimal_garage, its called 2.6.0~pre i dunno why, its the latest kit but not the bleeding edge code afik
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[18:26:43] <jthornton> tom3p: that is master
[18:27:30] <tom3p> thats what the dialog says in axis anyways http://imagebin.org/162309
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[18:31:21] <tom3p> sorry i dont understand 'newest' versus 'master' one is sequence number (which i think is sequential, but likely not ) and one is hierarchy... no comprende
[18:31:41] <danimal_garage> i have 2.5 pre
[18:31:46] <tom3p> its just what was handed to me when i asked git
[18:33:30] <tom3p> in any case, it wont open the file dialog
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[18:38:04] <anonimasu> quick question how many mm do I need to machine the hole for a 19mm shaft to get a shrink fit?
[18:38:28] <ds3> less then 19 ;)
[18:38:33] <anonimasu> haha how manu µm?
[18:38:44] <archivist_emc> thee right much less than 19
[18:38:52] <anonimasu> 18.98?
[18:39:04] <ds3> isn't it like 1thou per inch of diameter?
[18:39:04] <archivist_emc> a thou per inch
[18:39:22] <ds3> so about 19 - 1/40? :D
[18:40:03] <anonimasu> 18.975mm
[18:40:29] <anonimasu> that's kindof heavy..
[18:40:36] <anonimasu> I can only measure 0.01... :p
[18:41:11] * ds3 refrains from making metric comments
[18:41:35] <archivist_emc> a metric chalk mark less
[18:41:51] <anonimasu> I can cut that tho.
[18:42:17] <ds3> probally have to cut, let it cool, measure and repeat if needed
[18:42:26] <anonimasu> 18.996 and my caliper is jumping between 19 and 18.99
[18:42:30] <ds3> what material?
[18:42:35] <ds3> caliper?!?
[18:42:37] <anonimasu> aluminium
[18:42:57] <ds3> wtf are you using a caliper for 1thou accuracy measurement?
[18:43:06] <anonimasu> do you know what a mitutoyo hole gauge costs?
[18:43:08] <ds3> ack... alum....
[18:43:15] <ds3> use a mic at least
[18:43:21] <archivist_emc> need more bite with ally
[18:43:35] <ds3> mic's are +/-0.0001, calipers are +/-0.001 if even that
[18:43:36] <anonimasu> a toothed drive wheel for the lathe
[18:43:44] <anonimasu> that I neede to make a hole in
[18:43:59] <anonimasu> im gonna make them with taper lock when i get the lathe running..
[18:44:01] <ds3> se a hole gage
[18:44:08] <ds3> use a hole gage
[18:44:20] <anonimasu> i have one that's 150mm dia
[18:44:50] <anonimasu> but it wont work for tiny stuff like this
[18:45:03] <anonimasu> (i trust my mill more then my measuring)
[18:46:01] <ds3> oops, sorry, telescoping gage I mean
[18:46:19] <tom3p> JT-Shop, add to the ini file in [DISPLAY] section, "PROGRAM_PREFIX = ../../nc_files/" it was just the change of environment from your place.
[18:46:25] <tom3p> looks great thanks!
[18:47:00] <ds3> or splurge and get inside trimike's
[18:47:06] <ds3> those things are cool
[18:47:26] <anonimasu> so what kind of bite is sane for that shaft?
[18:47:55] <ds3> you could use the loctite shaft retainer stufff...
[18:48:06] <archivist_emc> you need a set of http://www.buckandhickman.com/find/product-is-031070
[18:48:12] <anonimasu> it's a hack
[18:48:54] <archivist_emc> fits http://www.roymech.co.uk/Useful_Tables/ISO_Tolerances/ISO_LIMITS.htm
[18:50:50] <anonimasu> hm, shaft is precisely 19
[18:51:37] <anonimasu> 18.975 it is. + some heating and some locktite, I want things running even if I have to fix them better later on when the lathe is togther :)
[18:54:23] <ds3> how are you measuring the 19?
[18:54:29] <ds3> if it is a caliper, I'd be of suspect
[18:54:45] <l0st1nsp4c3> do any of u use the charge pump for gecko drivers in emc2? will it slow down everything to generate that 10khz on pin 16???
[18:55:23] <archivist_emc> I calibrate my caliper and check for jaw twist so I can do press fits with a caliper
[18:55:48] <ds3> everyone says to use mic's for something like that
[18:56:40] <archivist_emc> I know, and the fits standards give up below an inch, its fun on tiny stuff
[18:57:20] <l0st1nsp4c3> wondering if generating that 10khz charge pump will slow down stuff i mean 10 000 pulses a second seems like something extra on cpu load
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[19:04:28] <mazafaka_> Have just realised skateboard can be easily mounted on my mountain bike (Norco Mountaineer) just because of its form altogether with wheels - with no additional straps or so.
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[19:13:10] <mazafaka_> it fits into the frame
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[19:53:57] <Tom_itx> anonimasu, what's up?
[19:54:39] <Tom_itx> freeze the shaft and heat the alum and it'll slip right on
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[20:23:09] <anonimasu> my gear dosent fit.
[20:23:45] <anonimasu> maybe I need a press :D
[20:23:52] <anonimasu> since it's a press fit
[20:24:19] <JT-Shop> or dynamite to get it going
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[20:30:24] <anonimasu> tho it looks like my endmill was a tiny bit oversize.. like 0.02mm -_-
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[23:32:55] <JT-Shop> dang table under the vise was starting to rust from the coolant :/ I hope spraying it with white lube will keep the rust out
[23:38:16] <robin_> use better coolant
[23:38:51] <JT-Shop> using the best I know of...
[23:38:57] <robin_> black oil?
[23:39:09] <JT-Shop> no
[23:39:34] <JT-Shop> Val Cool VP Tech
[23:39:36] <andypugh> I bet that neat oil from the Harding wouldn't cause rust
[23:39:57] <robin_> can't beat black oil :)
[23:40:02] <JT-Shop> don'
[23:40:04] <robin_> although, for alloy ...
[23:40:10] <JT-Shop> don't know what black oil is
[23:40:17] <robin_> err, oil
[23:40:32] <robin_> the old school coolant
[23:40:34] <JT-Shop> I do a mix of materials on the mill
[23:40:58] <robin_> the old guys cutting steel swear by neat oil
[23:41:01] <JT-Shop> sulfur cutting oil like for threading?
[23:41:12] <robin_> but yeah, its a bit old now
[23:41:21] <robin_> basically, yes
[23:41:31] <JT-Shop> what a mess that would be
[23:41:34] <robin_> you dont get rust :)
[23:41:45] <JT-Shop> LOL point taken
[23:41:52] <andypugh> My Machinery's handbook recommends best quality lard oil. Perhaps with a bit of soap and lye.
[23:42:01] <robin_> im trying to remember what we use
[23:42:29] <JT-Shop> I tried to get some neat oil for the Hardinge but got tired of looking
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[23:43:13] <andypugh> Mobil do an oil recommended for spindle, ways and coolant. No tramp oil problem there.
[23:45:11] <robin_> http://www.lubetechshop.co.uk/product_info.php?cPath=25_51&products_id=119
[23:45:16] <robin_> thats what we use
[23:45:24] <robin_> diluted 20:1 i think
[23:45:27] <JT-Shop> andypugh: I was chatting with some crotch rocket pilots the other day at a benefit ride and seems all the engines red line about the same 12.5k is yours the same
[23:46:26] <JT-Shop> robin_: seems they only ship to UK mainland
[23:47:07] <robin_> yes, but its a US compnay, so youll find a US distributor if you want to try it out
[23:47:15] <JT-Shop> I might have got the ratio a bit out once... it is 10%
[23:47:31] <andypugh> JT-Shop: Mine revs to 14,750
[23:47:34] <JT-Shop> I might push it up to 15% and see
[23:47:53] <JT-Shop> that is screaming fast
[23:48:09] <robin_> JT-Shop, use the ratio they recommend ... two high and it doesnt work, too low and it doesnt work
[23:48:29] * robin_ nods
[23:48:47] <robin_> most modern 4 cylinder bikes redline between 14 and 16K
[23:48:56] <JT-Shop> I need to keep my refractrometer handy
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[23:49:37] <andypugh> It's quite high geared in first, so red-line shows 105mph on the speedo. I am not sure why it has 6 gears.
[23:49:45] <robin_> hehe
[23:49:55] <robin_> what you got these days andy?
[23:51:13] <JT-Shop> my 6 cylinder tops out at 6k
[23:51:42] <andypugh> 2004 R1
[23:51:45] <robin_> car or bike?
[23:51:48] <robin_> ah righty
[23:52:01] <JT-Shop> so 140mph in 5th is tops for me
[23:52:21] <andypugh> I need 3rd for 140mph
[23:52:32] <robin_> 6cy bike that hits 140? ...
[23:52:50] <robin_> I was thinking CBX or Benelli SEI, but neither of those will touch 140
[23:52:50] <andypugh> It's not a Benelli Sei
[23:53:00] <JT-Shop> yea, Goldwing... 1800cc 850lbs wet
[23:53:09] <robin_> oh, car
[23:53:14] <JT-Shop> bike
[23:53:31] <robin_> nah, I seen them pulling trailers
[23:54:10] <robin_> you could sell it and buy a proper one ;)
[23:54:27] <JT-Shop> it is a proper one for me :) and the wife
[23:54:38] <robin_> and about 8 passengers ;)
[23:54:50] <JT-Shop> nope just room for two
[23:55:01] <JT-Shop> in comfort mind you
[23:55:05] <robin_> well yeah
[23:55:12] <andypugh> They are American, Robin, they take up a fair bit of space :-)
[23:55:25] <JT-Shop> andypugh: you see anything in the chaps dmesg?
[23:55:25] <robin_> is it the model with the awning and restroom?
[23:55:44] <JT-Shop> no, anti-lock brakes and XM radio
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[23:55:55] <JT-Shop> oh heaters too
[23:56:03] <robin_> well, of course
[23:56:17] <robin_> heres mine
[23:56:19] <robin_> https://picasaweb.google.com/robin.szemeti/MiscBikePhotos#5620823089175458482
[23:56:42] <JT-Shop> oh nice!
[23:57:01] <robin_> sounds even better :)
[23:57:11] <JT-Shop> for some strange reason when I was young I wanted a BSA 441
[23:57:15] <robin_> just finishing the wiring loom
[23:57:28] <JT-Shop> what year?
[23:57:34] <robin_> '76
[23:57:41] <JT-Shop> nice work
[23:57:54] <robin_> had it since .. hmm 83
[23:58:32] <robin_> hope to paint the side panels tomorrow
[23:58:45] * JT-Shop needs to check van out for tomorrow's trip to the big city to watch a ball game
[23:59:07] <robin_> ahh, yes
[23:59:17] <robin_> and this is how bad it got before I decided to restore it
[23:59:18] <robin_> https://picasaweb.google.com/robin.szemeti/MiscBikePhotos#5617057637926587538
[23:59:53] <JT-Shop> twin front disk in 76 nice
[23:59:57] <andypugh> that dmesg is odd. I am going to poke through the source to spot the context