Gallery, Projects and General > The Design Shop

Ramsbottom Intermedial Steam Engine

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sbwhart:
No Chris, though Ramsbottom was born in Lancashire so there is a posibility that there was a link some ware in the dark past.

stew

vtsteam:
I see, so there's a thick connecting plate in the center, no skirt, and the plate has a horizontal slot that forms the Scottish yoke. Good idea!

I think the butterfly valve could be made by taking a piece of tubing and sawing a miter in it. Then silver solder it back together with a piece of sheet brass between.

But your valve is also a good one!

philf:
Stew,

What prevents the piston rotating?

Would a flanged block (one fixed flange and one flange screwed to the block so it can be assembled) with a hole to fit the crank pin help?

As well as stopping the piston turning I think it would last a lot longer than having the pin running directly in the slot in the web.

Cheers.

Phil.

vtsteam:
In a full size engine under load and continuous use, I imagine lubrication would be a problem.

How could you use splash lubrication or pressure lube for the crank bearings between the pistons? Would oil flinging around in the crank space cause problems?

On the other hand, it would be Interesting to do a rotary version of the engine. The valve could be modified to suit.

sbwhart:
Her's a animation of a scotish yoke http://en.wikipedia.org/wiki/Scotch_yoke it shuld make thing a little clearer.

In a an air running model lubrication is the least of youre worries all I do is introduce some oil in the air line when a start them up thats all thats needed for a day's running.

I keep reading scotish yoke as scotish joke:- so her's a scotish joke as told by Chick Murry, who insidently was a model engineer.

I went to see Dumbarton Rock, I wathced it all day it it never moved:-  boom, boom

:lolb: :lolb: :lolb: :lolb:

Dumbarton Rock, is a large island in the river Clyde.

Stew

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