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Chat Area => General Car Chat => Topic started by: Field Marshal Dr. Opti on 24 March 2017, 11:26:54

Title: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 11:26:54
I was highly impressed with a documentary on the television yesterday evening. The diesel lump in question was the 'Deltic' used in state of the art locomotives built in the early sixties.

It seems the Deltic had two cylinders sharing the same bore. These were set in the shape of a triangle giving 6 cylinders. Six of this configuration was then joined together giving a 36 cylinder (I think) diesel engine, taking up a relatively small space.

As far as I can see the Deltic diesel was only produced for a couple of years. Not sure why.


 
Title: Re: I dislike derv......but.
Post by: Mister Rog on 24 March 2017, 11:32:47

As an ex-spotty nerdy trainspotter in my youth  ;D I remember the Deltic, I never knew much about the technicalities, but I do remember that they were bloody huge things, and very imposing.
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 11:39:33

As an ex-spotty nerdy trainspotter in my youth  ;D I remember the Deltic, I never knew much about the technicalities, but I do remember that they were bloody huge things, and very imposing.

Faster than what went before.
Title: Re: I dislike derv......but.
Post by: Doctor Gollum on 24 March 2017, 11:49:58
Animation (http://www.youtube.com/watch?v=D3bj47TAYiU&feature=youtube_gdata_player)

Noise (http://www.youtube.com/watch?v=pUD2UYSPuKs&feature=youtube_gdata_player)

More noise (http://www.youtube.com/watch?v=jr99NJHr5qQ&feature=youtube_gdata_player)
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 11:57:14
Animation (http://www.youtube.com/watch?v=D3bj47TAYiU&feature=youtube_gdata_player)

Noise (http://www.youtube.com/watch?v=pUD2UYSPuKs&feature=youtube_gdata_player)

More noise (http://www.youtube.com/watch?v=jr99NJHr5qQ&feature=youtube_gdata_player)

Thanks, Al. Yep. The animation explains how it works far better than I can. That is one big hunk of derv on the back of that lorry.
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 12:00:49
I was highly impressed with a documentary on the television yesterday evening. The diesel lump in question was the 'Deltic' used in state of the art locomotives built in the early sixties.

It seems the Deltic had two cylinders sharing the same bore. These were set in the shape of a triangle giving 6 cylinders. Six of this configuration was then joined together giving a 36 cylinder (I think) diesel engine, taking up a relatively small space.

As far as I can see the Deltic diesel was only produced for a couple of years. Not sure why.

I think that should be two pistons sharing the same cylinder.
Title: Re: I dislike derv......but.
Post by: Doctor Gollum on 24 March 2017, 12:01:30
I still cannot get my head around it, but any 18 cylinder lump with 18 superchargers gets my vote 8)
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 12:03:37
I still cannot get my head around it, but any 18 cylinder lump with 18 superchargers gets my vote 8)

Possible to fit under the bonnet of an Omega or simply too large? ;D
Title: Re: I dislike derv......but.
Post by: STEMO on 24 March 2017, 12:37:42
Do you think that engine in the last clip would pass an emissions test?
Title: Re: I dislike derv......but.
Post by: Kevin Wood on 24 March 2017, 12:38:07
As far as I can see the Deltic diesel was only produced for a couple of years. Not sure why.

Yes - judging by that last clip, Euro 6 emissions compliance might have been a problem. :-\

Also used in boats. Trains and boats - both vehicles in which the combustion of diseasel is acceptable. :y
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 24 March 2017, 12:59:46
Do you think that engine in the last clip would pass an emissions test?

Certainly would with a VW tester.
Title: Re: I dislike derv......but.
Post by: Kevin Wood on 24 March 2017, 14:18:55
Do you think that engine in the last clip would pass an emissions test?

Certainly would with a VW tester.

Yes, that would be the software hack that shuts down both Deltics and plays the characteristic exhaust note through a very large P.A. system until out of sight.  ;)

Oh, and they'd have to find a way of making it necessary for the whole front of the loco to come off to service the engine.  ::)
Title: Re: I dislike derv......but.
Post by: ronnyd on 24 March 2017, 21:20:05
Woman with the kid in the pushchair wasn,t very impressed, (clip 3) ;D
Title: Re: I dislike derv......but.
Post by: biggriffin on 25 March 2017, 09:41:24
Wait till that Mr dtm read this thread his post.be longer than any of dbg's. :)
Title: Re: I dislike derv......but.
Post by: Lizzie Zoom on 25 March 2017, 10:19:13
Yes, the sound of a Deltic at full power is a dream, even for a hardened steam engine enthusiast as myself.

 https://www.youtube.com/watch?v=cJtd9cSZkao

and to prove they are still loved and exist here are five of them together (there is one more in preservation):

https://www.youtube.com/watch?v=Avy6KKRFhl4

enjoy! :-* :-* 8)
Title: Re: I dislike derv......but.
Post by: citroenguy on 25 March 2017, 10:30:41
I love the sound of the HST 125  :) The turbo noise  :D

https://www.youtube.com/watch?v=C1ICcOu0NkM
Title: Re: I dislike derv......but.
Post by: Lizzie Zoom on 25 March 2017, 15:03:39
I love the sound of the HST 125  :) The turbo noise  :D

https://www.youtube.com/watch?v=C1ICcOu0NkM

Yes, the 125's do have something...........but.................these are the real streaks still:

https://www.youtube.com/watch?v=mnEPNLcG_qQ ;D ;D ;D ;D 8) :y
Title: Re: I dislike derv......but.
Post by: Field Marshal Dr. Opti on 25 March 2017, 15:08:32
I love the sound of the HST 125  :) The turbo noise  :D

https://www.youtube.com/watch?v=C1ICcOu0NkM

Yes, the 125's do have something...........but.................these are the real streaks still:

https://www.youtube.com/watch?v=mnEPNLcG_qQ ;D ;D ;D ;D 8) :y

The Mallard is just gorgeous Lizzie. They clearly understood the importance of aerodynamics even way back in 1938. :y :-* :-* :-* :-*