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Outside Frame - Inside Cylinder - A very special Mamod Loco
I have mentioned this loco in a previous thread but never shown it on the forum. This is one of the most unique Mamodifcations I have ever seen. I acquired the loco in pieces and with some minor damage here and there. This was sorted some time back and more recently I made up a simple plinth so that I could display the loco. The loco came to me via my connection with the L&B and this inspired the name "WOODA BAY" - this being the original name of the area now known as Woody Bay and home of the Lynton & Barnstaple Railway. The loco is gauged for 45mm track and is not adjustable.

Believe it or not I have not yet run the engine as I still need to make a custom gas burner for it. That job has not yet come up to the top of the 'to-do' list

I will be showing this engine along with numerous others at the L&B September Gala so you never know - it might just be running by then!!



Outside Frame - Inside Cylinder - A very special Mamod Loco
Very nice

But inside cylinder? Doesn't look it to me, unless those outside cylinders are dummies!
Outside Frame - Inside Cylinder - A very special Mamod Loco
Roly Williams wrote:
Very nice

But inside cylinder? Doesn't look it to me, unless those outside cylinders are dummies!


Hi Roly - yes the outside ones are dummies. The workings look quite amazing from underneath!!

Outside Frame - Inside Cylinder - A very special Mamod Loco
Interesting!
Outside Frame - Inside Cylinder - A very special Mamod Loco
Roly Williams wrote:
Interesting!


Certainly is  

Outside Frame - Inside Cylinder - A very special Mamod Loco
Here are a couple of pictures taken outside. These are slightly nicer images than the first two pictures as they show the colour better and you get another view of the dummy cylinder and valve gear arrangement.



Outside Frame - Inside Cylinder - A very special Mamod Loco
That's a lovely looking little engine!

Some interesting plumbing going on  

I notice that the trailing "pony" axle appears completely fixed - what's the overall wheelbase of the loco? This will determine how sharp a radius it can cope with.
Outside Frame - Inside Cylinder - A very special Mamod Loco
Did they use the once launched two cylinder marine engine from Long Long times ago? It nearly seems to look like one of the  rarest Mamod engines ever. I lke that its duty is now on rails rather than in the wet.

cheers Joe
Outside Frame - Inside Cylinder - A very special Mamod Loco
SLR wrote:
That's a lovely looking little engine!

Some interesting plumbing going on

I notice that the trailing "pony" axle appears completely fixed - what's the overall wheelbase of the loco? This will determine how sharp a radius it can cope with.


Hi SLR - yes the plumbing is 'interesting'     Actually it is very well thought out really.

The centre to centre, front to back axle distance, is approximately 122mm so it will not work on tight curves. I am not familiar with how you work out the correct radius track needed? I doubt I will be laying any 45mm track though  
Outside Frame - Inside Cylinder - A very special Mamod Loco
dampfmaschinenjoe 1967 wrote:
Did they use the once launched two cylinder marine engine from Long Long times ago? It nearly seems to look like one of the rarest Mamod engines ever. I like that its duty is now on rails rather than in the wet.

cheers Joe


Hi Joe - the engine started out as a standard SL1. The builder started by seriously modifying the frames but from what I can see of the originals had some issues with them so instead made the frames from scratch instead. The cylinders and back plates are standard but the connecting rods are unique pieces that are then connected to the crank arrangement. Quite ingenious and a lot of work for the builder - all hidden when running too. The dummy outside cylinders are really neat and well made. It's a clever bit of modding!



Outside Frame - Inside Cylinder - A very special Mamod Loco
superbiker_uk wrote:
Roly Williams wrote:
Very nice

But inside cylinder? Doesn't look it to me, unless those outside cylinders are dummies!


Hi Roly - yes the outside ones are dummies. The workings look quite amazing from underneath!!


LOL you got me too
Outside Frame - Inside Cylinder - A very special Mamod Loco
You have certainly filled Alan Dunster's shoes with all these unusual Mamod inspired locos Peter.

Another incredible conversion. I assume the pipes from the steam dome, and the right side tank to smokebox, are non-functional, but cannot see where the second pipe on the regulator housing goes to?

With the rear fixed axle that is a long wheelbase which would restrict what track geometry/points it could run on?

Chris Cairns
Outside Frame - Inside Cylinder - A very special Mamod Loco
Intresting direct drive of a crankshaft axle ! Very unique but not unusual . Swa the real chaloner once and there they had a crankshaft axle too and connecting rods to thenormal reaxle to drive all wheels .


cheers Joe
Outside Frame - Inside Cylinder - A very special Mamod Loco
A very interesting looking loco indeed.
Outside Frame - Inside Cylinder - A very special Mamod Loco
That's nice and very interesting as well

I agree it looks great form underneath. Nice crankshaft

It looks good to

Thanks for showing

Mark
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Engine of the Month August
EOTM
Redryder's
1914 Ernst Plank Distillery
Reproduction by Russell Snyder
Click picture to enlarge