Mamod carriage to Mamod Tram engine.

Tony Bird · 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.

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

Hope it doesn't rain!

Regards Tony.

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

I like it!
Are you going to be sticking with a single cylinder?

mikewakefielduk@btinterne · 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?

Tony Bird · 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.

Regards Tony.

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

What's the history of the tram body?

Tony Bird · 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.

Tony Bird · 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.

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.

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.

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.

Tony Bird · 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.

Regards Tony.

Tony Bird · 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.

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.

Regards Tony.

kandnwlr · 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

'Pierre Berry · 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 !

Tony Bird · 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.

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

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

Another photograph the first way around.

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.

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

Hi,

Tram up date.

Video at:

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

Regards Tony.

Dr. Bond of the DVLR · Post by **Dr. 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.

kandnwlr · 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

Tony Bird · Post by **Tony Bird** » Sun Jul 13, 2014 6:15 pm

Hi,

No. 52 of the J&Q is more or less finished. A reversing system has yet to be fitted, the only way that I have come up with given the limited space is underneath and would require a major alteration so I suspect that forward only will be the order of the day! At least for the foreseeable future.

The model has had about an hours running time and is starting to run in. It originally need about 10 psi to getting going which is a little high. So today the chassis was stripped and tweaked a bit and now turns over slowly at 4 psi.

A dead leg lubricator has been fitted. The safety valve now has a shroud. The chimney has been lowered so it will go under the Rhydypenderyn bridge. The plumbing for the chimney has been made so the chimney will act as a condenser/oil separator. Including warming up the Serno will power the model for 10 minutes and use about half the water in the boiler.

Some photographs.

I will need to find some Mamod carriages to modify for it to pull.

A video of it running will follow.

Regards Tony.

Tony Bird · Post by **Tony Bird** » Sun Jul 13, 2014 10:03 pm

Hi,

Video.

Regards Tony.

Tony Bird · Post by **Tony Bird** » Sat Jul 19, 2014 5:29 pm

kandnwlr · Post by **kandnwlr** » Sat Jul 19, 2014 5:36 pm

Beautiful ... and inspiring

Snailrail · Post by **Snailrail** » Sat Jul 19, 2014 5:57 pm

My hat is off to you, sir. A unique and elegant little engine

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Mamod carriage to Mamod Tram engine.

Mamod carriage to Mamod Tram engine.

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