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Post by Deleted on Jul 23, 2008 19:32:43 GMT
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Post by tubeprune on Jul 23, 2008 19:57:49 GMT
This is a beautiful piece of work. There are a couple of points: The control key is good. The DBVIC opening is good but the black needle will start at Zero and will move very slowly up to 65lbs. The brake handle moves too far round to the lap position. We would normally move into a partial ep application position and allow the TL air to build up. It takes so long for the air to reach normal pressure, the ep is always used to hold the train while it builds up. That said, it really is an impressive bit of work! |
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Post by Deleted on Jul 24, 2008 7:04:30 GMT
Thanks Tubeprune.
So, does the black needle move from zero to 65lbs when the DBVIC is opened or when the brake handle is moved. I thought that the needle went down the more the brakes are applied.
Darren.
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Post by Colin D on Jul 24, 2008 17:58:00 GMT
The brake handle would usually be in the release position when you open up, so the train line air (black needle) would build up when you open the DBVIC. The only time that needle will move is if you make a westinghouse application, Get tripped, have a handle pulled or have a train line burst  . The main line air keeps the train line charged through a trickle valve IIRC As tubeprune said very impressive Colin D |
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Post by Deleted on Jul 24, 2008 20:55:59 GMT
Thanks Colin D
At what point would the handbrake be released then. I take it you would wait for the train pipe needle to reach 65lbs after opening the DBVIC then make an ep application which would hold the train as Tubeprune said. Will this send the needle back to zero before you release the handbrake. Am i getting confused with Westinghouse application and ep application or are they the same thing.
Darren.
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Post by tubeprune on Jul 25, 2008 17:02:51 GMT
Thanks Colin D At what point would the handbrake be released then. I take it you would wait for the train pipe needle to reach 65lbs after opening the DBVIC then make an ep application which would hold the train as Tubeprune said. Will this send the needle back to zero before you release the handbrake. Am i getting confused with Westinghouse application and ep application or are they the same thing. Darren. As soon as you open up you can apply the e.p. brake and release the handbrake. For all normal operation you can forget the train line. It doesn't change unless you use the Westinghouse air brake. The e.p. brake operates independently of it and it uses main line air only. Even then, the main line pressure doesn't vary enough to notice since the compressors keep it at 90-110lbs. If you need a simple explanation of how it works, try here: www.railway-technical.com/air-brakes.shtmland here www.railway-technical.com/ep-brakes.shtml |
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Post by Deleted on Jul 25, 2008 20:17:48 GMT
Thanks again Tubeprune. I found this article very useful while surfing for more information. www.piccadillypilot.co.uk/bits/WestinghouseAType.htmI'll have a go at the animation again getting it right this time. I think I'll include switching off the stabling light, turning on the headlight and the wiper just to add a bit more entertainment. All these animations will hopefully be useful in the export to Rail Simulator. Darren. |
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Post by tubeprune on Jul 26, 2008 8:55:16 GMT
Thanks again Tubeprune. I found this article very useful while surfing for more information. www.piccadillypilot.co.uk/bits/WestinghouseAType.htmI'll have a go at the animation again getting it right this time. I think I'll include switching off the stabling light, turning on the headlight and the wiper just to add a bit more entertainment. All these animations will hopefully be useful in the export to Rail Simulator. Darren. The brake shown in this web page is the 6-position A Type e.p. brake used on Q and Standard Stock. The version described has no mercury retarders and the audible warning was connected to the train line giving an emergency brake if the e.p failed or you lost a circuit for a moment - very inconvenient. These were altered for retarders 1938ish and ML supplied audible warning late 40s I think. The brake on the 38s was the 5-position D Type self-lapping type. There was no holding position. |
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Post by Deleted on Jul 28, 2008 18:34:53 GMT
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Post by tubeprune on Jul 29, 2008 8:22:51 GMT
I don't think you need the wiper. We avoided it like the plague unless it was really raining hard.
One samll point: The ratchet release lever for the handbrake moves towards the operator.
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Post by Deleted on Jul 29, 2008 12:39:10 GMT
Thanks Tubeprune.
I'll keep that in mind for when it goes into the sim.
Thanks for you help on the subject.
Darren.
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. The main line air keeps the train line charged through a trickle valve IIRC 
