|
|
| Re: R-42's Running On The ''A'' - 7/23/2007 (467754) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: R-42's Running On The ''A'' - 7/23/2007 |
|
|
Posted by SelkirkTMO on Sat Jul 28 22:57:42 2007, in response to Re: R-42's Running On The ''A'' - 7/23/2007, posted by Eric B on Sat Jul 28 21:26:42 2007. I'll have to defer to Jeff H on the specific meaning of AMUE, but it was essentially a variation of standard UE5 with electro-pneumatic braking, manual lapping and "electric hold." Lapping was the practice (prior to SMEE which was "self-lapping") of pulling the handle to admit air into the pipe (more correctly reducing the pressure) and then rotating the handle back from the service position to the lap position which would hold the amount of air reduction until released. In SMEE, this lapping is done automatically and so running SMEE equipment is more like a hand-controlled version of an automobile footbrake in that the more you pulled, the more you got whereas in AMUE, you had to calculate how much air to "take" and then cut it off to hold it in the lapping position. Easy to do, hard to explain. :)I'll see if I can find some video of the "hand jive" and put it on Yootoob so folks can see it if it's clear enough ... been a while since I've seen it and don't remember if the entire operation is intact in that video. If so, I'll clip it and post a link to this thread when I have time to. In the meantime, when running, you'd pull the handle about parallel to the rails to take an 8-10 pound reduction, then turn the handle to the 7 o'clock position to lap (or "hold" what you bit) and then release as required, perhaps take another nip as reaquired, and then when you got down to about 3 MPH or so, you'd do a full release (9 o'clock position) and then pull the handle back to "electric hold" (8 o'clock position) to stop with just enough air electrically held in the cylinders to make a smooth stop. You learned to feel your way around doing this and it was REAL easy to do once you got used to what felt right. Hopefully I can show this if the video has all the steps intact and viewable. We'll see ... As far as "getting away" there were several possibilities as to what I meant ... one was that arnines could go VERY fast and they'd be constantly on you in school car to watch that or you'd end up going WAY to fast into timer hell and get tripped. If you weren't paying attention to your air when stopping, you could blow right through a station and stop two or more cars out, and finally arnines didn't hold their air very well and if left in a yard on ANY grade at all, they'd eventually release by themselves and become "escapees." Therefore, it was a rule that you had to tightly apply AT LEAST three cars worth of handbrakes before stepping off. So what I meant was one of those. Heh. |
|
|
|