Unidentified NSE 4-car DMU

hertford · Post by **hertford** » Sun May 20, 2007 3:35 pm

I've just looked at a certain video on Youtube, at Wembly Park tube station on the Metropolitan line, when at about 36 seconds through the video an unidentified Network South East 4 car DMU flies past on the Marylebone lines! What could the class of this train be? Since I'm very interested in such matters like this.

http://www.youtube.com/watch?v=5KU0jkwCVmg&NR=1

Hertford.

alexnick · Post by **alexnick** » Sun May 20, 2007 3:41 pm

Looks like a 117 to me - unless anyone else has any more accurate suggestions. I'm pretty sure that they worked out of Marlybone (if I remember the NSE handbook correctly).

Nick

allypally · Post by **allypally** » Sun May 20, 2007 3:46 pm

It'll be a Marylebone 115.

Hymek · Post by **Hymek** » Sun May 20, 2007 4:59 pm

Yes, it will be a 115, as 117s were only three car DMUs. Also the cab shape, headcode box and suburban style doors rule out

101,104,116,118s and 119s

hertford · Post by **hertford** » Sun May 20, 2007 5:23 pm

Thanks guys, I thought it was similar to a 117, but I didn't even think of a 115, simply because the only 115 on UKTS is a WSR livery...

Cheers
Hertford

arabiandisco · Post by **arabiandisco** » Sun May 20, 2007 5:48 pm

Is there any real difference between a 117 and a 115? Externally, I can't see any significant differences. Different engines perhaps?

allypally · Post by **allypally** » Sun May 20, 2007 6:02 pm

115s were built by BR Derby in 1960, they use 2 230hp BUT engines per vehicle, 117s were built by Pressed Steel in 1959-1960, using 2 150hp BUT engines per vehicle. 117s are also 3 car units, 115 are 4.

arabiandisco · Post by **arabiandisco** » Sun May 20, 2007 6:32 pm

I suppose the different engines are because 115s have an extra trailer vehicle. Back then they didn't fit non-driving cars with engines.

chriscooper · Post by **chriscooper** » Mon May 21, 2007 6:44 pm

IIRC, the 115s also had smaller luggage space in the guards compartment than the 117s, but had one in each DM rarther than just at one end. Also, the 115s were ungangwayed. They were very similar to the Class 127 Bed-Pan units, also built at Derby as 4 coach units, but they had 238hp Rolls Royce engines and hydralic transmission, rarther than the BUT Leyland (although badged Albion) engines. The 230hp Leylands were also fitted to the 123 and 124 Intercity units.

tigermon · Post by **tigermon** » Tue May 22, 2007 6:07 pm

arabiandisco wrote:I suppose the different engines are because 115s have an extra trailer vehicle. Back then they didn't fit non-driving cars with engines.

Does the Class 124 not count then?

chriscooper · Post by **chriscooper** » Tue May 22, 2007 7:20 pm

The 124 was a bit of an exception, not only being 6 coaches, but also being designed for the Trans Pennine route with all it's steep gradients, hence the need for more power. The 185 is a modern replacement, although loco haulage and 158s have been used in between.