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Ezard's geared loco research

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Ezard's geared loco research
Posted by Mt Beenak on Monday, April 28, 2008 5:37 AM

G'day guys,  (this may be specific for Australian members, sorry)

 Has anyone done any research on Ezard's geared loco.  It was used in the Warburton and Erica areas of Victoria.  I am going to build a model using the mechanisms from two LGB field locos and a scratchbuilt upper body.  I plan to write an article/photos as I go about building it.  I know it had a number of changes in its life, but I don't know what and when or the exact sizes of major details.  I would appreciate any help or correspondence.

 Mick

Timber tramways down under.

Mick

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Posted by cabbage on Monday, April 28, 2008 6:13 AM
Do you mean the design where the pistons and chain assembly were all in sealed oil baths at the side of the loco?

regards

ralph

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Posted by Mt Beenak on Tuesday, April 29, 2008 8:11 PM

Ezard was a logger in the early 1900s who had a flair for design and engineering.  He bought two used german steam locos, an 0-4-0 and an 0-6-0 and sent them to Days Engineering in Melbourne with instructions to create a climax style loco.  The cylinders off one loco sat horizontal to the track below the centre of the loco, and drove a central gearbox, from which drive shafts ran forward and back to two four wheeled bogies.  The inner axle of each bogie was driven by a differential and the outer axle was driven by side rods off the other axle.  This was a one off loco.  Days mainly built petrol and diesel powered rail tractors.  There is no other evidence of them producing another steam loco.

Imagine two LGB field railway loco mechanisms being the drive units, and the steam chest and pistons off one loco slung under the boiler driving a gearbox off a Bachmann climax.  Over one bogie a Stainz 0-4-0 loco cab and side tanks, an extended boiler, a diamond stack off a Shay... are you starting to get the picture...Question [?]

All I need now is the critical dimensions, and about $2,000 for the five locos which will give their lives to build it. Wink [;)]

Being such a quirky and local topic I don't know that anyone outside my backyard will be able to help, but you never know.  I have one or two pictures of the loco, but I have no idea how to post them. 

Mick

Mick

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Posted by cabbage on Wednesday, April 30, 2008 1:19 AM
Oh! THAT one! I thought you meant the Swartzlob -which is a design in which the external power drive was fed through chains to an epicyclic gearbox and thence to the driving wheels -thus giving the loco 1st, 2nd and 3rd gear! Because of the sealed oil baths the bogies look as if they have huge banjos stuck to the side of them. The picture below is of the Finnish varient.



So, if I remember correctly then -the drive system is a modified "Climax B" type?



The "trick" of posting pictures is actually very simple.

£img£ IMAGE URL £/img£

Remove the £ signs and replace them with open" [ " and close "]" square brackets and there you have the general method of doing it. If you select "View Source" from your browser you will see this is the method that I have used to post the two images above.

regards

ralph

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Posted by Mt Beenak on Wednesday, April 30, 2008 4:22 AM

You have it almost exactly, except the differential is on the axle closest to the central gear box, not on the outside axle.

We had one example of a loco similar to your Hannah, known as the 'Harman'.  It was manufactured by the Harman Company, who were known locally for very successful steam winches.  Their only attempt at a steam loco was a dismal failure.  It had steam delivery to the four wheel bogies through the central pivot of the bogies, and small cylinders on the outside of each bogie frame, similar to the photo of 'Hannah'.  It was two foot six inch gauge, but never did anything much more than its delivery run! 

It was replaced by a class B Climax number 1694, same gauge.  That loco was salvaged by the Puffing Billy Railway and fully restored to revenue service.  It is currently undergoing a full rebuild.  I saw it Tuesday.  It looks like it is ready to go back together.  The Bachmann Climax is a really close model of it.

Mick

Mick

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Posted by Mt Beenak on Monday, May 12, 2008 12:17 AM

Ralph,

I finally created an account in photobucket, and here is my first attempt to link a photo to it.

 

This is the view of it in its later life.

 Mick

 

 

Mick

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Posted by Mt Beenak on Monday, May 12, 2008 12:24 AM

What do you know?  That worked.  Prepare to be bombarded with every photo I have ever taken.  Here is an earlier view of the loco, before the side tanks were added.

The large square box at the rear was a water tank.  Later two side tanks were added, but I don't know if the water tank was retained at the rear or if it was used for fuel.  In some shots the fuel (fire wood) was seen stacked on top of the boiler, between the tanks.

Anyone able to identify anything else of the history of this loco?

Mick 

Mick

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Posted by cabbage on Monday, May 12, 2008 9:57 AM
If you are having problems with getting some sort of working drawing for this -could I suggest one of the designs proposed by Messrs Beyer Peacock for the Rimutuka incline in NZ?



Yes I know it is "rather" different" but it does show a detailed plan of how a major locomtive builder would have gone about it. And, I have found, it often helps to look at how someone else has done it!

regards

ralph

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Posted by Mt Beenak on Monday, May 12, 2008 6:57 PM

Wow!  A geared Garratt!  I have never seen that before, but it looks like a wonderful design, and eliminates the problem of the flexible steam couplings.

I have some clue of what Days did in building the loco, but I do not have things like critical dimensions.  I am happy to use the cylinders which come off the LGB Orrenstien and Koppel loco (#23140) and that is what Ezard used.  However, I am not sure about the overall length, width, height, boiler diameter etc.  The only dimension I know with any accuracy is the wheel diameter... and I am not using accurate wheels, just the ones from the mechanism that comes closest!

Does any one know of a way to scale dimensions from a photograph, when the view is not side on?

Mick

 

Mick

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Posted by cabbage on Monday, May 12, 2008 10:53 PM
To be honest there is not a lot of "domestic" photogrammetry software around... The method I use is to print it out on graph paper and then measure! The two shots above are at a low enough angle and (I think) at a far enough distance that perpective would not be too much of a problem. If you consult the home page then you will find that I build the wierd and wonderful -most of which only photos are left to work from...

I have been for several years now trying to find a picture of the UKs ONLY Shay locomotive -which lived less than 50 km from here. How this US designed loco would have had to have been modified to run on UK rails would look like -I am dying to know!!!

regards

ralph

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Posted by Mt Beenak on Tuesday, May 13, 2008 7:13 AM

Ralph,

Love the website, and I love the collection of wierd loco types you have researched.

I am a fan of the Garratt.  We had two on the 2 foot six Narrow Gauge in Victoria, Numbered G41 and G42.  They were 2-6-0 + 0-6-2.  I rode behind G42 the other day at Puffing Billy, where I volunteer as a Conductor.  I built one many years ago in On2-1/2. (Now called On30 by the yanks). 

My next project is to find photos of the Harman and post them for you.  I know you will appreciate it.  It was a fairly unique loco, if a total failure.  It is not entirely unlike your Hannah loco.

Here the the remaining photos of Ezard's loco.  Hope you find them interesting.

Mick    P.S. Thanks for teaching me the process of posting photos.

 

Mick

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Posted by cabbage on Tuesday, May 13, 2008 10:58 AM
I have seen a short DVD of G42 in action, (I got it from "The Railway Channel"). If you are interested in the wierd and wonderful then can I recommend the following site:

http://www.dself.dsl.pipex.com/MUSEUM/LOCOLOCO/locoloco.htm

I have a directory on my system called "The Errm... Files". This is a collection of locomotive images and facts that really do not want to see the light of day -and yet I intend to build them. Currently "The Errm.. Files" contains images of std gauge locomotives for my Gauge 3 track.

The GT3 gas turbine locomotive.
The Fell Diesal locomotive.
The Canadian Pacific Route No. 1952
The Mexican Central "Johnstone" double boiler locomotive.

I look forward to sharing!

regards

ralph

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Posted by FJ and G on Tuesday, May 13, 2008 1:35 PM

Ralph,

 

That website is bizarreBig Smile [:D]

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Posted by Mt Beenak on Wednesday, May 14, 2008 4:46 AM

Here is a link to David Fletcher's model of the Harman loco.  As stated in the site, the Harman was a disaster and was replaced by Climax number 1694. 

http://4largescale.com/fletch/d30a.htm

There are two builders photos of the Harman on this site:-

http://steamplace.com/harman.htm

Mick

Mick

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Posted by Mt Beenak on Saturday, May 24, 2008 7:22 AM

Ralph, et al.

I was mistaken earlier when I wrote that Days only produced the one steam loco.  I have since found this other loco, known as Richard's Big Loco.  (His small loco was a Kerr Stuart 0-4-2 T which derailed at every opportunity.)

Note this is a Heisler clone, while Ezards was a Climax clone.

Maybe this will be my next project...

Mick

Mick

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Posted by cabbage on Saturday, May 24, 2008 9:49 AM
I like it!!!

It is just so "wrong" that people looking at it would swear that it is a fantasy.... Thank you for the information I have added it to my store of locos. So, I feel it is only fair that I return the favour.

This is the "Katte GMBH" locomotive -the only example I know of the Brazillian "Fretl" system of articulation. Like the "Klose" the conrods change length length in direct proportion to the radius of the curve. One day I will work out the calculations that are required to build one -however the precision required is going to be way beyond that of "Kitchen Sink Engineering"!!!

The Loco



The Fretl method of articulation



Enjoy!!!

regards

ralph

The Home of Articulated Ugliness

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