Mamod carriage to Mamod Tram engine.

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Tony Bird
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Mamod carriage to Mamod Tram engine.

Post by Tony Bird » Sun Jun 29, 2014 10:26 am

Hi,

This thread has restarted here because it was started in the wrong section. It was started in the Rolling stock section under the title of Mamod Carriage Conversion.

Its a CMES open day today and in an hour or so I'm off to play trains!

I have taken a couple of photographs which I hope show the way I am thinking.

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A bit of an issue with clearance but this is the prototype and rather than getting parts what was in stock has been used.

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Hope it doesn't rain!

Regards Tony.

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Post by Big Jim » Sun Jun 29, 2014 12:52 pm

I like it!
Are you going to be sticking with a single cylinder?
If at first you don't succeed, use a bigger hammer!

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Post by mikewakefielduk@btinterne » Sun Jun 29, 2014 5:11 pm

Its going to be rather wide with the one cylinder on the side there. Why not mount it on top of the boiler and use a chain drive to the wheels like the Regner Vincent?

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Post by Tony Bird » Sun Jun 29, 2014 5:51 pm

Hi Jim,

Are you going to be sticking with a single cylinder?

No it will be a twin cylinder. I didn't think to include the other cylinder in the photograph. With smaller wheels than the Mamod locomotive and the 1.66:1 gear reduction it should travel about half the speed of a locomotive for the same piston speed, it will also be quite heavy so as long as the boiler is up to it the Tram could be quite powerful, certainly for its size.

Hi Mike,

Why not mount it on top of the boiler and use a chain drive to the wheels like the Regner Vincent?

There isn't enough room under the roof of the Tram locomotive.

Image

Regards Tony.

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Post by mikewakefielduk@btinterne » Sun Jun 29, 2014 8:59 pm

What's the history of the tram body?

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Post by Tony Bird » Mon Jun 30, 2014 6:51 am

Hi Mike,

What's the history of the tram body?

The thread was started in the Rolling stock section under the title of Mamod Carriage Conversion and shows the tram body being made from a Mamod carriage,

Regards Tony.

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Post by Tony Bird » Mon Jun 30, 2014 5:25 pm

Hi,

I did some more work on the chassis today. As it looked at end of play.

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I had intended to use the fly cranks left over from altering two Mamod roadsters. But they was a bit of an issue with track clearance.

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So it was decided to reduce the stroke from 19mm to 16mm and use disc cranks but a mm or so will have to be removed from their diameter as they only just clear the track.

Image

After making the fly cranks smaller, shortening axles and sorting out where the steam pipes will go the chassis will be ready for a air and steam test.

Regards Tony.

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Post by Tony Bird » Thu Jul 03, 2014 8:45 am

Hi,

Tram up date. Mamod buffer beams have been fitted and the disc cranks made smaller to clear the track.

Image

Image

Regards Tony.

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Post by Tony Bird » Fri Jul 04, 2014 7:27 am

Hi,

The buffer beams have been tidied up and a piece of wood fitted into them to work as an insulator when picking the hot model up. Away was figured out as how to connect steam and exhaust pipes to the engine.


Image

Image

The chassis is running on 10psi of air which is the lowest that it will operate at. The flywheels though balanced are a bit small and the aluminium wheels don't have a lot of mass. It should run better on the track, I hope!

And the poor video.

Image

Regards Tony.

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Post by kandnwlr » Fri Jul 04, 2014 7:51 am

I have to admit that I have a weakness for tram engines. Can´t wait to see this one under steam :D

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Post by 'Pierre Berry » Fri Jul 04, 2014 9:23 am

kandnwlr:102350 wrote:Can't wait to see this one under steam
Me too ! :D

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Post by Tony Bird » Fri Jul 04, 2014 4:27 pm

Hi,

Today the first time the chassis was run on steam using a test boiler.

VIDEO.

Image

Also today was the first time the body was fitted to the chassis. First this way around.

Image

Then the more likely way, the other way around, as it gives more space under the small area of footplate.

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Another photograph the first way around.

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It has yet to be decided where to put the lubricator, reversing valve and throttle along with their pipe work. This will take some thinking about so as I have to make some safety valves for both this and other boilers that will be the next build. Also the chimney height needs to be checked to see if it will go under 'Rhydypenderyn's' bridge. Also a tray for the Sterno will have to be made.

Tomorrow if the weather is better I hope to play with one of my larger gauge steam engines.

Regards Tony.

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Post by Tony Bird » Sat Jul 12, 2014 9:27 am

Hi,

Tram up date.

Image

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Video at:

Image

I haven't figured out where to put the reverser yet. Lubricator and a bit more plumbing first.

Regards Tony.

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Post by Mr. Bond of the DVLR » Sat Jul 12, 2014 11:52 am

You've crammed an awful lot into a very small space there - very inspiring.
Image
The railway which people forgot
(to build)

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Post by kandnwlr » Sat Jul 12, 2014 7:33 pm

Significantly more stuff in one small space than (for example, the new Regner Otto). Looking forward to the video 8)

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