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Author Topic: Seen passing Par  (Read 482 times)

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Offline geoffc

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Re: Seen passing Par
« Reply #15 on: May 03, 2018, 10:28:41 am »
Thanks Tim it looked a bit strange especially with the swallow livery power car, what has happed to the Hitachi's only seen one so far.
Dave

Out of the first batch of GWR Hitachi's 800001 to 800036 all but two 05 and 36 are in service. They run from Paddington to Worcester, Swansea and Taunton either as singles or in pairs, the latter having ten engines running as opposed to the HST's two!. They run on the overhead to Didcot then on diesel for the rest of the journey which limits the range. The next batch 802s I believe, will have long range fuel tanks so they can work to Penzance.

Geoff

Offline njee20

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Re: Seen passing Par
« Reply #16 on: May 03, 2018, 10:36:45 am »
Not sure that's right, is it? There are 3 GUs per 5-car set, so 6 on a 10 car unit (and 5 on a 9 car unit). 750hp per engine, so 4,500hp. An HST has 2,250hp per engine for a total of 4,500 again.

I imagine an 800 weighs less than a full HST mind, combined with distributed power, so the performance is presumably better, even given the same absolute engine power.

Of course a 2+4 HST thus still has 4,500hp whilst a single 800 has only 2,250.

Offline geoffc

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Re: Seen passing Par
« Reply #17 on: May 03, 2018, 12:39:02 pm »
Not sure that's right, is it? There are 3 GUs per 5-car set, so 6 on a 10 car unit (and 5 on a 9 car unit). 750hp per engine, so 4,500hp. An HST has 2,250hp per engine for a total of 4,500 again.

I imagine an 800 weighs less than a full HST mind, combined with distributed power, so the performance is presumably better, even given the same absolute engine power.

Of course a 2+4 HST thus still has 4,500hp whilst a single 800 has only 2,250.


According to Wikipedia you are correct, but they do loose time on a lot of diagrams when on diesel power. Typically jack of all trades, master of none.

Geoff

 

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