The Unofficial Mamod and Other Steam Forum

Dampfzauberer

Hi,
here are some pics how I improved my wilesco steam tractor.
This will also work with the steam roller.

I took an old governor's pedestal and gloed it onto the engine's frame. Then shorten the governor's bar a little bit.
You also must take the enige in parts to put a small pulley in the middle of the axle! I hope the pictures eyplain it better than me

I think with this governor it looks a little bit more real!
Just have a try yourself

Mamodman123 · Posted: Thu Jul 19, 2007 11:25 am Post subject:

A great addition to the roller

Would look much more authentic

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James · Posted: Thu Jul 19, 2007 11:28 am Post subject:

I like that!

I was going to do the same on my other Wilesco Traktor.
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Wallace · Posted: Thu Jul 19, 2007 12:23 pm Post subject:

I've always like them engines, but that looks even better. Nice addition

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steamyjim · Posted: Thu Jul 19, 2007 3:15 pm Post subject:

Looks great on the tractor.

I think it would look out of place on the roller (unless it was a convertible) because they were rarely fitted in real life

Is that extra valve an exhaust regulator?
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James · Posted: Thu Jul 19, 2007 3:16 pm Post subject:

Looks like it has an exhaust regulator AND a steam regulator

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Dampfzauberer · Posted: Thu Jul 19, 2007 3:41 pm Post subject:

Yeah! Right! I put an extra exhaust regulator on that steam line.
Already years ago. It runs very slow with that (if it is closed a little bit)
Think this works then like a Expansion-Steam-Engine

steamyjim · Posted: Thu Jul 19, 2007 3:46 pm Post subject:

Do you mean compound engine?? The word expansion could have come from the name given to some compunds eg triple expansion (3 cylinders)

If so its not as a compund works by the steam being taken from the main cylinder to a larger cylinder where the steam is used again
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Dampfzauberer · Posted: Thu Jul 19, 2007 3:51 pm Post subject:

hmm..no thats not what I ment.
I think, the steam last longer in the cylinder, so that he expands a little bit more than without that valve.....
It forces the steam to stay longer inside the cylinder....
Well, just maybe...the only thing I know is that the engine runs slower with it

SillyBilly · Guest

Expansion link? If you notch it down it runs better while coasting on locos (in real life).

steamyjim · Posted: Thu Jul 19, 2007 4:42 pm Post subject:

Any engine with proper (eg stephensons link) valve gear can be notched back

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steamyjim · Posted: Thu Jul 19, 2007 4:44 pm Post subject:

Actually i think i know what you mean now.

Wallis and Steevens (full size traction engine builder) devised a special traction engine called the expansion engine that has 2 sets of valve gear acting on 1 cylinder. By notching them both back (or something like that) they could make the engine run more efficiantley.
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Dampfzauberer · Posted: Thu Jul 19, 2007 4:47 pm Post subject:

Aha!!!

So thats what I build there.....or something like that

steamyjim · Posted: Thu Jul 19, 2007 4:51 pm Post subject:

Could be, could be.

Not promising thats what it is though.

Ill try and work out how the real one works

I know someone with a wallis expansione engine
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