Deleted
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Post by Deleted on Oct 17, 2006 20:27:12 GMT
Since this thought got overlooked on the cab heat thread, has LUL ever considered installing a positive pressure system in train cabs to keep out dust, fumes, pollen etc.? It's common practice on tractors and earthmovers and might help with driver comfort.
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Deleted
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Post by Deleted on Oct 17, 2006 20:36:02 GMT
they will be very draught proof from what i have read. Weren't the C stocks with anti-draught measures when first introduced was a failure.
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Phil
In memoriam
RIP 23-Oct-2018
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Post by Phil on Oct 18, 2006 14:47:34 GMT
they will be very draught proof from what i have read. Weren't the C stocks with anti-draught measures when first introduced was a failure. Possibly true, but sjc's idea is much better for a clean cab atmosphere. Over to prjb: has anyone thought of this one? |
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Deleted
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Post by Deleted on Oct 18, 2006 15:26:53 GMT
It sounds like it could work - I wonder if positive pressure is part of the solution for keeping the A/C in S stocks from wasting energy cooling/heating an open saloon.
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prjb
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LU move customers from A to B, they used to do it via 'C'.
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Post by prjb on Oct 19, 2006 17:44:56 GMT
I must confess to not knowing anything about positive pressurisation systems, and as far as I am aware this has not been suggested for 'S' Stock (well, any stock for that matter!). I will ask my more learned engineering colleagues and come back to you.
As for 'C' Stock (God bless em guvnor!!), they did indeed have inflatable seals in the cab door edges. They were a nightmare and never really worked very well. In fairness it sounded like a good idea, but in practice when the door closed and the seal inflated they generally made a hissing noise and then gave up the ghost!
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Deleted
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Post by Deleted on Oct 20, 2006 22:23:57 GMT
Thanks for checking. A friend used to operate a tractor mowing roadsides and said he could drive through a patch of ragweed at peak allergy season without single sneeze because the pressurization system in his cab filtered everything out.
The C stock door seals sound like they were punctured by debris in the door channel.
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prjb
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LU move customers from A to B, they used to do it via 'C'.
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Post by prjb on Oct 20, 2006 23:15:37 GMT
That was exactly the problem with the original seals, they tore, got damaged, or just wore down. The move to solid rubber seals when the 'C' Stock were refurbished by RFS in Doncaster (1992 onwards) was a big improvement IMHO.
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solidbond
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'Give me 118 reasons for an Audible Warning on a C Stock'
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Post by solidbond on Oct 21, 2006 21:34:01 GMT
'C' Stock were refurbished by RFS in Doncaster (1992 onwards) was a big improvement IMHO. Now now - I would expect you to know that it was 199 1 onwards  ;D ;D ;D |
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prjb
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LU move customers from A to B, they used to do it via 'C'.
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Post by prjb on Oct 21, 2006 22:03:24 GMT
Well, yes the first one was 91 IIRC. The main fleet started rolling out in 92 though, didn't it? Not countng 5585/6585 naturally. We were both at Baker Street at the time, ahh happy days. Goes all misty!  |
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;D ;D ;D
