World's Tiniest V12 Engine

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skirted_in_SF
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Re: World's Tiniest V12 Engine

Post by skirted_in_SF »

Kirbstone wrote:At the present time I'm working on a 3' long and about as high model of the 'Cutty Sark' and am dithering whether to add sails or leave it with just the rigging & bare spars. It's hard to make static model sails look well. I'm working from lavish photos downloaded off the Net.T.
Tom,
You might be interested in this series of articles on tea ships and the Cutty Sark in particular that have been published by the tea vendor that I use. They start at issue XXI on this link:
http://www.uptontea.com/shopcart/inform ... l_home.asp
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Kirbstone
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Re: World's Tiniest V12 Engine

Post by Kirbstone »

Thanks for that, Stuart. I have a very large moonlit pic. of both the Cutty Sark and the Thermopylae battling it out on the high seas. The Thermopylae won many times, but didn't get preserved like her rival.

Of course Steam was already where it was at when they opened the Suez. The old clippers had no auxilliary power, so couldn't attempt that route, unlike later tall ships, all of which have serious auxilliary power.

T.
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straightfairy
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Re: World's Tiniest V12 Engine

Post by straightfairy »

Uncle Al wrote:Hi S.F.

Your link is the same as I originally posted, just left off
the word 'diesel'.

Uncle Al
:mrgreen: :santa: :mrgreen:
So it is. I saw the comment referencing running on compressed air and thought it was a different one I had previously seen.
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crfriend
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Re: World's Tiniest V12 Engine

Post by crfriend »

If the device is really running in internal-combustion mode as a proper diesel then it's got to be using fuel with a very low flash-point and is normally-aspirated with the air-fuel mixture already carburetted in by the time it reaches the intake manifold. All modern diesels, to the best of my knowledge, use high-pressure injectors to deliver the fuel into an already compressed and hot cylinder. I didn't see any injector apparatus which is why I commented so.

But, then again, I may be completely off my rocker.
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Re: World's Tiniest V12 Engine

Post by Zorba »

Yea, I don't think its "running" - but I would have liked to have seen the rings put on the pistons.
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Sarongman
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Re: World's Tiniest V12 Engine

Post by Sarongman »

Zorba wrote: I would have liked to have seen the rings put on the pistons.
This makes me think, would the rings be put on; gapping 24 to 36 tiny rings or more due to breakage! may end in madness. the whole exercise is something that would be in the purview of a watchmaker, (granted the whole thing is thus!) or would rings be machined out of the body of the piston? The whole project required such precision that any shortcut that would be feasible without compromising the item has to be considered.With sufficient clearance and, possibly no heat rxpansion a film of lubricant should suffice. The rings aren't subject to combustion heat and need only act as the seal. Any true engineers ready to shoot me down in flames?
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Zorba
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Re: World's Tiniest V12 Engine

Post by Zorba »

Yea, you're probably right. Not much speed (RPMs) either.
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Re: World's Tiniest V12 Engine

Post by skirtyscot »

Guys, I think you are over-analysing it! It's a curiosity, and an amazing wee piece of engineering by an enthusiast.
Keep on skirting,

Alastair
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