04:41

Welcome
Welcome!Welcome to Ships Nostalgia, the world's greatest online community for people worldwide with an interest in ships and shipping. Whether you are crew, ex-crew, ship enthusiasts or cruisers, this is the forum for you. And what's more, it's completely FREE.

Click here to go to the forums home page and find out more.
Click here to join.
Log in
User Name Password

  Home · Search · Register  

Home » Engines & Ship Mechanics Photo Options

« Previous image · Next image »

DOXFORD-SEAHORSE 58G4
DOXFORD-SEAHORSE 58G4

Click on image to view larger image

« Previous image  · Slide Show · Next image »


Photo Details
A.D.FROST



Senior Member

Registered: September 2008
Location: Sunderland by the Sea
Posts: 3,139
View Gallery Profile Send PM users gallery
The engine that never was.Designed in collaboration with Hawthorn Leslie and was named after their logo.
· Date: Mon, 16 April 12 · Views: 692
· Filesize: 114.3kb, 114.3kb · Dimensions: 1024 x 817 ·
Additional Info
Keywords: Sunderland
« more
IMGP2034.jpg
IMG_00351.jpg
DSCF08191.jpg
Wellington_Star_MAN_main_engine0001.jpg
Photo050.jpg
Photo044.jpg
British_Kestrel_Motor_Ship_4.jpg
British_Kestrel_Motor_Ship_3.jpg
British_Kestrel_Motor_Ship_2.jpg
British_Kestrel_Motor_Ship_1.jpg
Seahorse3.JPG
LV4.jpg
LV5.jpg
LV6.jpg
DSC005002.jpg
BW_sectional_header.jpg
Unusual_compressor_01.JPG
Junkers_opposed_piston_diesel_engine_03.JPG
Junkers_opposed_piston_diesel_engine_02.JPG
Junkers_opposed_piston_diesel_engine_01.JPG
Canora_main_engine_thrust_block_01.JPG
· more »

Author
Thread  
Duncan112

Senior Member

Registered: December 2006
Location: Lancashire
Posts: 3,493
Mon, 16 April 12 12:11

YouTube film of the Seahorse running here http://www.youtube.com/watch?v=la9hr3D0RDI
I believe problems with the ring pack contributed to the project failure - anyone know what happened to the prototype - be wonderful if it was still around rusting behind Swan's old works!!

------------------------------
“Those who cannot remember the past are condemned to repeat it.”

George Santayana (1863 - 1952)
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
bloomdido
Senior Member

Registered: July 2007
Posts: 239
Sun, 7 October 12 11:07

i sailed on four ellermans boats that had three cylinder doxfords,built in the late seventies and they were called the seahorse engine
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
peter hogg
Senior Member

Registered: April 2006
Posts: 165
Wed, 7 November 12 11:44

The Ellerman ships had Doxford 58JS3 engines not Seahorse.
The seahorse never got beyond prototypical version.
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
Steve Hodges
Senior Member

Registered: February 2007
Posts: 523
Mon, 3 December 12 05:35

I was doing my 6 month workshop training for my BPTC apprenticeship in Hawthorn Leslie when the prototype Seahorse was being erected in 1971. I never saw it run, but it was about two-thirds complete when I left. What impressed me was the expected power output from such a compact unit, compared to the RND Sulzers that were Hawthorn's main output, and also the prospect of the exposed top crossheads whacking up and down at five times a second! I'm sure I recall that the top pistons drove the crankshaft via large diameter eccentrics either side of the main crank, but the drawing shows them on pins betwee the main bearing discs and the centre crank webs. Maybe it's just my memory, but it's a strange thing to imagine - perhaps they changed the design further down the line? The engine frame was also designed assymetrically so that the crankshaft could be lifted out of one side of the engine without disturbing the cylinder "block". As I was to all intents and purposes just a fitter's mate, I never got to talk to any of the design team or the management about it - the views of the erection shop fitting gang about the thing were mixed, to say the least. Although it was a joint venture I wondered why it was built at Hawthorn and not at Doxford, because Hawthorns just made engines under licence and didn't do much design work of their own; the two companies formed Doxford-Hawthorn Research Services specifically for the project. I was told by the chargehand fitter that Hawthorn were much more the driver than their partners, but I don't know if this was true or not, maybe they just had more space on the shop floor.
The Seahorse was an interesting concept, they wanted to get a short medium-speed engine with high power output ( i.e less ER space), running on HFO, but with the reliability and "chunkiness" of a slow speed engine. There were so many radical ideas in it, though, that I imagine it would have required pretty massive development to make it a vaible, reliable design, and I don't think either company had deep enough pockets. It could have bred a whole new generation of "Doxford men" though.............now there's a thought!.
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
760J9

Senior Member

Registered: July 2007
Posts: 170
Sat, 16 February 13 17:11

The prototype was scrapped in Sunderland. Many of the design features were used in the 580JS 3 cylinder engines installed in the Ellerman ships

------------------------------


This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
Steve Oatey

Senior Member

Registered: February 2008
Location: Vancouver Island
Posts: 1,232
Sun, 17 February 13 14:49

I'm sure we saw the proto running at Doxford's in Sunderland in 1974 or 75. There was also a plywood mock-up cut away version to show the internals.
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  
peter hogg
Senior Member

Registered: April 2006
Posts: 165
Thu, 13 March 14 08:42

Yes the prototype was erected at and ran test bed trials at Doxford Pallion works.
This user is offline
Click here to see this users profile Click here to Send this user a Private Message Find more posts by this user Visit this user's gallery  

Photo Sharing Gallery by PhotoPost
Copyright © 2007 All Enthusiast, Inc.



Support SN


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.