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December 16, 2018, 06:27:33 pm *
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Author Topic: IETs to Bedwyn delayed  (Read 1480 times)
1st fan
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« Reply #30 on: November 29, 2018, 03:07:53 pm »

Or a system similar to that used on in-car cameras in Formula 1 where a sheet of clear plastic scrolls in front of the lens on demand?
Yeah I thought of that as well but much later on the way into work. Great minds and all that  Smiley
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1st fan
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« Reply #31 on: November 29, 2018, 03:21:10 pm »

That’s an interesting idea, and perhaps they did?  The mechanism would need to be very robust to work a small blade like that effectively at 125mph, unless they only activated whilst stationary.  Of course it might cause problems should a blade get stuck or become misaligned and obscure the camera.
I thought of the blade problem and would have made it spring loaded. So the resting place for the blade would be on one side and held there by a spring. When activated the blade arm is pushed across and the spring pulls it back. That should prevent the blade from being stuck across the lense. To prevent excessive wear on the blade and arm I'd make the resting place sheltered from the oncoming air/rain/snow etc.
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Thatcham Crossing
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« Reply #32 on: November 29, 2018, 05:01:39 pm »

Quote
Or a system similar to that used on in-car cameras in Formula 1 where a sheet of clear plastic scrolls in front of the lens on demand?

The quality of picture you now get from those tiny cameras is remarkable, but being F1 it is no doubt not cheap! You would think it would be small enough to bolt to the side of a train though.
« Last Edit: December 04, 2018, 01:55:43 pm by Thatcham Crossing » Logged
patch38
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« Reply #33 on: November 29, 2018, 06:40:18 pm »

I'm sure they would be small enough; I'd imagine the challenge would be to service and maintain such a system. An F1 team has a lot of people to make two cars run for two hours once every few weeks. GWR have probably the same number of people to maintain a much bigger number of cameras operating almost 24/7.
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SandTEngineer
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« Reply #34 on: December 04, 2018, 10:59:37 am »

An update (from RAIL Magazine): https://www.railmagazine.com/news/network/great-western-railway-delays-newbury-iet-introduction-for-cctv-modifications

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IET introduction Delayed for CCTV modifications

Great Western Railway is delaying its introduction of new Hitachi trains on stopping services to Newbury and Bedwyn, until further notice.

The five-car Class 800 and ‘802’ bi-mode trains were due to replace Thames Turbos from the start of January, when Network Rail completes electrification of the route as far as Newbury.

However, GWR says the trains now require modifications. New CCTV cameras will have to be fitted so that the driver can see when doors can safely be closed. The company says this is essential at smaller stations where platforms are unstaffed. Stopping services are operated without a guard.

The operator was unable to say when these modifications could be carried out. It will have to delay the cascade of older Class 165 diesel multiple units from the route.

Network Rail is wiring as far as Newbury. The new trains would continue through Hungerford to Bedwyn using diesel power. A turnback siding at Bedwyn was lengthened last summer in readiness for the new rolling stock.

GWR spokesman Dan Panes said that longer nine-car Hitachi trains on the route to the South West would be unaffected, as they carry guards and do not stop at small unstaffed stations in Berkshire and Wiltshire.
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