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| Re: Flat wheel spots on the R46 (350225) | |
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| (352531) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Tue Dec 12 22:52:47 2006, in response to Re: Flat wheel spots on the R46, posted by smooth on Tue Dec 12 22:34:11 2006. Now there's a conductor who's probably operating a sump pump now. :( |
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| (352538) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:09:48 2006, in response to Re: Flat wheel spots on the R46, posted by avid reader on Tue Dec 12 07:27:24 2006. Within 3/8" on the same truck on DC propulsion cars. |
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| (352539) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:11:20 2006, in response to Re: Flat wheel spots on the R46, posted by tracksionmotor on Sun Dec 10 15:24:21 2006. It does and with greater than 105 tons of force. |
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| (352540) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:16:09 2006, in response to Re: Flat wheel spots on the R46, posted by South Brooklyn Railway on Sat Dec 9 21:02:07 2006. OK Give me their names! |
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| (352541) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:17:46 2006, in response to Re: Flat wheel spots on the R46, posted by RonInBayside on Tue Dec 12 09:30:42 2006. Pressed is more accurate |
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| (352542) | |
Re: Flat wheel spots on the R46 |
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Posted by monorail on Tue Dec 12 23:18:32 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Sat Dec 9 18:52:50 2006. actually, they do remain in service.........in service to the next station should the flats be found BETWEEN stations...... |
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| (352543) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:25:59 2006, in response to Re: Flat wheel spots on the R46, posted by Jace on Mon Dec 11 10:18:42 2006. That's why when you see a freight train derailment where cars flip over, wheel sets roll free. |
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| (352544) | |
Re: Flat wheel spots on the R46 |
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Posted by monorail on Tue Dec 12 23:26:40 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Tue Dec 12 23:25:59 2006. they do a wheelie? |
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| (352545) | |
Re: Flat wheel spots on the R46 |
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Posted by Train Dude on Tue Dec 12 23:26:57 2006, in response to Re: Flat wheel spots on the R46, posted by monorail on Tue Dec 12 23:18:32 2006. True enough - but not much beyond that. |
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| (352546) | |
Re: Flat wheel spots on the R46 |
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Posted by R4 Bryn Mawr LCL/R5 Paoli EXP on Tue Dec 12 23:29:05 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Mon Dec 11 21:18:44 2006. He should've went to Transit Tech. :) |
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| (352547) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Tue Dec 12 23:29:27 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Tue Dec 12 23:26:57 2006. I can imagine that once an 8 inch flat comes to a stop, it becomes a SLED. :) |
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| (352558) | |
Re: Flat wheel spots on the R46 |
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Posted by RonInBayside on Wed Dec 13 00:09:36 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Tue Dec 12 23:17:46 2006. OK, thanks. |
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| (352560) | |
Re: Flat wheel spots on the R46 |
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Posted by SUBWAYMAN on Wed Dec 13 00:24:06 2006, in response to Re: Flat wheel spots on the R46, posted by smooth on Mon Dec 11 10:51:04 2006. The M7s have both disc and caliper brakes. Because of this, they have a higher braking rate than the M1/3s. Unfortunately this does not really help the flat wheel problem the M7s have.Flat spots are always caused by slip-slide. This is not caused by their weight as some people claim. There are heavier railcars than the M7s that hardly have flats at all like the C3s and M2s. The problem is the Automatic Speed Control the M7s have which causes the brakes to go in full service or BIE. |
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| (352565) | |
Re: Flat wheel spots on the R46 |
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Posted by tracksionmotor on Wed Dec 13 00:31:47 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Tue Dec 12 23:11:20 2006. Thanks. 'A flat tire is flat only on one side.' A trainset speaks volumes when you walk undercar and inspect carefully. Having a 'tooth' pulled out with pressure exceeding 105 tons must hurt....thats more than 200K PSI! Comparative example is my rebuild of ATC array....Huck bolt blind 3/8ths fasteners shear at 10K PSI with a bang......105 ton is a big number! RRCI Peter |
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| (352584) | |
Re: Flat wheel spots on the R46 |
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Posted by smooth on Wed Dec 13 01:31:31 2006, in response to Re: Flat wheel spots on the R46, posted by SUBWAYMAN on Wed Dec 13 00:24:06 2006. "The M7s have both disc and caliper brakes. Because of this, they have a higher braking rate than the M1/3s."The M7 seems to have a clumsy feel to it though insofar as it seems to always be a case of applying the brakes too hard at first; is there less control over the higher braking rate? "Flat spots are always caused by slip-slide. This is not caused by their weight as some people claim." M7 cars - I don't know quite how to explain - have a heavy feel to them. I doubt it much affects the flat spots, except indirectly maybe. What is the braking rate on the C3 and/or M2 cars relative to M7? |
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| (352601) | |
Re: Flat wheel spots on the R46 |
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Posted by Railman718 on Wed Dec 13 07:18:20 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Tue Dec 12 23:16:09 2006. I dont think he knows thier names...SBR keeps doing this to himself... Maybe he was talking to a few first year T/O's, who are just happy somebody is asking them questions making them feel important.. Depending on the situation i dont talk Car Equipment with just anybody,over here in the A Div we just dont have the time... Beacuse that train across the platform is mines to go!!! |
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| (352608) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Wed Dec 13 07:32:23 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Wed Dec 13 07:18:20 2006. OOOOOoooooooo ... sounds like someone's waiting on a conga line for VCP and gets there JUST in time to run the platform and charge up. :( |
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| (352627) | |
Re: Flat wheel spots on the R46 |
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Posted by Steve B-8AVEXP on Wed Dec 13 08:15:38 2006, in response to Re: Flat wheel spots on the R46, posted by SelkirkTMO on Tue Dec 12 17:44:20 2006. I'm still waiting to hear a few of those gems one of these days on 6688.:) |
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| (352629) | |
Re: Flat wheel spots on the R46 |
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Posted by Railman718 on Wed Dec 13 08:21:42 2006, in response to Re: Flat wheel spots on the R46, posted by SelkirkTMO on Wed Dec 13 07:32:23 2006. Yeah basically (unless you work midnights) thats how the A Div is most of the time..;o) "Keep It Moving".... |
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| (352632) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Wed Dec 13 08:24:32 2006, in response to Re: Flat wheel spots on the R46, posted by Steve B-8AVEXP on Wed Dec 13 08:15:38 2006. Somebody cut me a check to get down there, and I'll be pleased to do a puppet show too! :) |
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| (352634) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Wed Dec 13 08:27:17 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Wed Dec 13 08:21:42 2006. Like that back in my day usually as well ... particularly the PM half of the tour ... now kick back and think about what the splits were like. You climbed up at oh dark hundred, did your round trip from Stillwell to the Bronx and back, then had six hours to shuffle around Coney with nothing to do. Most of the guys hit the gin mill and didn't shape up for the PM tour. Heh.Even if you made it back on time, it was you to go because the interval before yours was ABD'd because the crew for that run was flat on its face in the TMO's toilet. :) Wonder why the splits went away? TWU didn't get tough, they got tired of ABD's. Heh. |
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| (352697) | |
Re: Flat wheel spots on the R46 |
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Posted by RonInBayside on Wed Dec 13 12:32:09 2006, in response to Re: Flat wheel spots on the R46, posted by tracksionmotor on Wed Dec 13 00:31:47 2006. It is very impressive. I'm trying to visualize that procedure. It must be noisy. |
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| (352724) | |
Re: Flat wheel spots on the R46 |
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Posted by Steve B-8AVEXP on Wed Dec 13 13:25:44 2006, in response to Re: Flat wheel spots on the R46, posted by SelkirkTMO on Wed Dec 13 08:24:32 2006. I'm afraid to ask what sort of puppet show it would be.:) |
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| (352762) | |
Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Wed Dec 13 14:14:15 2006, in response to Re: Flat wheel spots on the R46, posted by Steve B-8AVEXP on Wed Dec 13 13:25:44 2006. "Punch and Foamer" ... sheesh ... you already TOOK IN the show. :) |
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| (352790) | |
Re: Flat wheel spots on the R46 |
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Posted by Steve B-8AVEXP on Wed Dec 13 15:13:19 2006, in response to Re: Flat wheel spots on the R46, posted by SelkirkTMO on Wed Dec 13 14:14:15 2006. Well, there was Dougie's sadistic leer as he piloted 1689 down the straightaway. And you mooing into 6688's mike. |
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| (352874) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Wed Dec 13 18:40:19 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Wed Dec 13 07:18:20 2006. "Maybe he was talking to a few first year T/O's, who are just happy somebody is asking them questions making them feel important.."No, they had quite a few years. |
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| (352880) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Wed Dec 13 18:52:26 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Wed Dec 13 07:18:20 2006. "SBR keeps doing this to himself..."What do I keep doing to myself? |
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| (352884) | |
Re: Flat wheel spots on the R46 |
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Posted by error46146 on Wed Dec 13 19:03:39 2006, in response to Re: Flat wheel spots on the R46, posted by South Brooklyn Railway on Wed Dec 13 18:52:26 2006. Making a fool of yourself by liking the R46 |
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| (352885) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Wed Dec 13 19:05:48 2006, in response to Re: Flat wheel spots on the R46, posted by error46146 on Wed Dec 13 19:03:39 2006. That's nice, asshole. |
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| (352886) | |
Re: Flat wheel spots on the R46 |
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Posted by error46146 on Wed Dec 13 19:07:04 2006, in response to Re: Flat wheel spots on the R46, posted by South Brooklyn Railway on Wed Dec 13 19:05:48 2006. I thought we said we would have our war on Transit stuff, not here |
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| (352887) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Wed Dec 13 19:08:27 2006, in response to Re: Flat wheel spots on the R46, posted by error46146 on Wed Dec 13 19:07:04 2006. Well, why are you bringing the R46 thing up here then? |
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| (352892) | |
Re: Flat wheel spots on the R46 |
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Posted by error46146 on Wed Dec 13 19:11:06 2006, in response to Re: Flat wheel spots on the R46, posted by South Brooklyn Railway on Wed Dec 13 19:08:27 2006. I'm not. You started it all by responding to my post about how an R46 is supossed to feel like |
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| (352894) | |
Re: Flat wheel spots on the R46 |
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Posted by (SIR) North Shore Line on Wed Dec 13 19:13:49 2006, in response to Re: Flat wheel spots on the R46, posted by error46146 on Wed Dec 13 19:11:06 2006. The MUE-2s are better than the R46s so there!
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| (352909) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Wed Dec 13 19:34:52 2006, in response to Re: Flat wheel spots on the R46, posted by (SIR) North Shore Line on Wed Dec 13 19:13:49 2006. Agreed. |
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| (352912) | |
Re: Flat wheel spots on the R46 |
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Posted by BIE on Wed Dec 13 19:37:04 2006, in response to Re: Flat wheel spots on the R46, posted by Jeff H. on Tue Dec 12 03:24:52 2006. I have to make the trip sometime. |
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| (352920) | |
Re: Flat wheel spots on the R46 |
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Posted by BIE on Wed Dec 13 19:44:34 2006, in response to Re: Flat wheel spots on the R46, posted by BIE on Sun Dec 10 18:14:16 2006. Simmons is in Albany.http://www.smtgroup.com/Simmons%20Home%20Page.htm |
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| (352927) | |
Re: Flat wheel spots on the R46 |
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Posted by FarRock on Wed Dec 13 19:52:02 2006, in response to Flat wheel spots on the R46, posted by Edwards! on Fri Dec 8 20:53:15 2006. I saw an OOS R38 at Broad Channel heading to Pitkin with one of the rear cars having flats this evening. It sounded like the R68 in that video R4 posted. |
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| (353132) | |
Re: Flat wheel spots on the R46 |
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Posted by Edwards! on Wed Dec 13 23:14:22 2006, in response to Re: Flat wheel spots on the R46, posted by error46146 on Wed Dec 13 19:03:39 2006. So what your saying is ANYBODY/EVERYBODY who LIKES the 46's are FOOL's.Thats what your sayin'? |
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| (353158) | |
Re: Flat wheel spots on the R46 |
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Posted by tracksionmotor on Wed Dec 13 23:47:12 2006, in response to Re: Flat wheel spots on the R46, posted by RonInBayside on Wed Dec 13 12:32:09 2006. NO. You drill the hole, place the 'Huck bolt 'blind rivet' in the hole and apply the pneunatic/hydraulic gun. BOOM.....just be sure the rubber deflector directs the broken stud away from you. What ocurs is that the gun draws in the stem of the blind rivet under extreme pressure to break it.....my small pneumatic gun can exercise 9,980 PSI upon a 3/8ths fastener...no labeled warning of noise level. Bigger hydraulic guns are even louder...it is the noise of rivet shaft being broken...shaft of rivet is hardened steel. Just part of a days work. it is good to have a good job. RRCI Peter |
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| (353183) | |
Re: Flat wheel spots on the R46 |
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Posted by Railman718 on Thu Dec 14 00:30:14 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Wed Dec 13 07:18:20 2006. What i mean is you say things and sometimes dont have enough evidence to back you up thats what i meant, its just and observation...As for the T/O's what is quite a few years?? I have quite a few Years myself 5 years going on 50, heh heh .. |
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| (353208) | |
Re: Flat wheel spots on the R46 |
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Posted by Jeff H. on Thu Dec 14 03:24:01 2006, in response to Re: Flat wheel spots on the R46, posted by avid reader on Tue Dec 12 07:27:24 2006. Wheel circumference is measured using a special "tape measure" witha bunch of little clips to make sure the measurement is taken at a specific place on the wheel tread profile. The tape reads in terms of 1/8" increments in wheel diameter. As train dude said, there must be no more than 3 tape numbers difference between the smallest and the largest wheel on a truck. Wheels on same axle are most sensitive to diameter mismatch for what should be obvious reasons. One axle in the truck being larger than the other is less sensitive but it will cause the weight to be distributed unequally, and therefore one axle will be more likely to spin during motoring or slide during braking. |
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| (353209) | |
Re: Flat wheel spots on the R46 |
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Posted by Jeff H. on Thu Dec 14 03:26:53 2006, in response to Re: Flat wheel spots on the R46, posted by Train Dude on Sat Dec 9 22:32:33 2006. TD,Does NYCT use any taper in the wheel seat of the axle? Does NYCT use an indicator diagram showing pressing force vs advance and pop the wheels off for a re-try if the indicator card shows a problem? |
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| (353395) | |
Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by Zman179 on Thu Dec 14 15:02:02 2006, in response to Flat wheel spots on the R46, posted by Edwards! on Fri Dec 8 20:53:15 2006. You think that 8 inch flats make noise? Pleeeeease. Ain't nuttin'.I had an R46 not too long ago with a busted armature. That would make the dead in a cemetery call up the TA to complain about the noise. Compared to that, listening to flats is like listening to classical music. |
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| (353411) | |
Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by RonInBayside on Thu Dec 14 15:50:55 2006, in response to Flats ain't nuttin'...was Re: Flat wheel spots on the R46, posted by Zman179 on Thu Dec 14 15:02:02 2006. 8-) |
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| (353415) | |
Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by SelkirkTMO on Thu Dec 14 15:54:21 2006, in response to Flats ain't nuttin'...was Re: Flat wheel spots on the R46, posted by Zman179 on Thu Dec 14 15:02:02 2006. Never pictured you in a ROCK band, but G-2 written nonetheless. :) |
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| (353426) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Thu Dec 14 16:15:12 2006, in response to Re: Flat wheel spots on the R46, posted by Edwards! on Wed Dec 13 23:14:22 2006. Oh yes. That's why he IS a fool. |
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| (353428) | |
Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Thu Dec 14 16:17:34 2006, in response to Re: Flat wheel spots on the R46, posted by Railman718 on Thu Dec 14 00:30:14 2006. 1) Yea, true, I do need more evidence to back up what I say sometimes.2) 10 years+ 3) Good luck with that, your a trooper! |
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| (353430) | |
Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Thu Dec 14 16:21:05 2006, in response to Flats ain't nuttin'...was Re: Flat wheel spots on the R46, posted by Zman179 on Thu Dec 14 15:02:02 2006. How the hell did you make the trip then? |
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| (353468) | |
Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by Zman179 on Thu Dec 14 17:05:43 2006, in response to Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46, posted by South Brooklyn Railway on Thu Dec 14 16:21:05 2006. Couldn't. We had to stop in the station and remain there for a couple hours for fear that if we were to continue that the armature would completely disconnect and cause a derailment. Fortunately, we were at a station where other trains could easily run around us. Once the RCI came and disconnected the motors (which cut off direct power to the armature,) the train was then able to limp directly to the CI main shop for immediate truck replacement. |
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| (353473) | |
Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46 |
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Posted by South Brooklyn Railway on Thu Dec 14 17:08:47 2006, in response to Re: Flats ain't nuttin'...was Re: Flat wheel spots on the R46, posted by Zman179 on Thu Dec 14 17:05:43 2006. Wow. But the armature is that long wood that holds the contact shoe? |
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