LMS Turbomotive details

In issue 4514 starting on page 252 there is a general description of a turbine locomotive ... what a wonderful machine ... Mr Jeggli criticises himself on the last page of the article ... I think he deserves total praise ... if anyone else looks carefully at the published photos they would realise he has incorporated a lot of very clever systems into the model ... all home-made I assume ... is there any way he could be persuaded to add some details of various parts of the loco ??

Shown in photos 20 to 23 is the burner module with all its parts ... the burner itself looks tiny as regards overall length measured from the 2 inlet pipes to the burning surface ... this seems to be gauze and not ceramic ... clever !! looking at photo 21 this shows the steam pressure diaphragm valve removed from its location ... it is tiny !! ... what may be the adjusting spring is only just over one turn ... the ones I have previously made have usually been at least 10 mm in length and equipped with 2 locknuts.

The water pump has its own built-in guide for the ram and the pump body looks as if it swings the 2 water pipes as it moves ... neat and space-saving !!

Please Mr Jeggli, any chance of publishing any details in the magazine ??

There was a very successful locomotive 'Turbo' in 5" (I think) gauge - that was very capable of passenger hauling - the turbines are much more capable of delivering power in the somewhat larger size.

If I were to try my hand at such a thing, I think I'd be tempted to try a Tesla turbine, but the real challenge with any turbine loco is the drive train and Mr Jeggli is to be congratulated on getting one to work in G1 where I'm sure he is battling against many scale effects.

Neil

There's a video of a model turbomotive here

You get a real sense of that smooth powertrain system in action compared to the jerky cylinders of a standard steam powertrain

That's Werner Jeggli's model as featured in ME.

Beautiful job by Mr Jeggli. What a great locomotive!

There are various sources for details Graces.co.uk for example

These are from 7th july 1935

page 12 (as referred) full citroen herringbone gearing

Edited By Ady1 on 13/08/2015 01:13:29

You can pull over 100 years of British engineering from Graces

With no cylinders in the way, that loco really looks the biz.

Edited By Ady1 on 13/08/2015 01:05:54

If the boiler tubes of larger scale locomotives allow it., I'm surprised than nobody has fitted turbulators to improve thermal efficiency. It might even help win IMLEC !.

What a fantastic gear-train !!

Thanks for posting the pages, Ady

MichaelG.

**LINK**

Thanks for the link, Cyril

... I note that the film is dated 1924

MichaelG.

Michael

This link on youtube of the same clip is much clearer.

**LINK**

Cyril

Thank you gentlemen for your interrest in my project.

Martin, about further descriptions of constructional details - I'll see what I can do.

Neil, Tesla turbine - I've been there. See ME Nr. 4281. I found, that the Tesla power output is definitely inferior to the impulse turbine one!

Werner

More turbines

**LINK**

A group of Swiss G1MRA members will tour the south of England by coach and with their engines. On Saturday September 19 we will visit the Didcot Railway Centre, Oxfordshire. I'll take the Turbomotive along. The museum does not have a gauge one track. But I will be able to live steam operate the locomotive on a rolling road. This will be from 13.30h to 14.30h. I hope, there will be interested visitors. I'd be delighted to have technical discussions there. Does anybody lives close enough to make it?