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Old 06-02-17, 02:35 PM   #1
Kevbuts
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Default 1/2hp Robinson X Type Hot Tube Gas Engine

I recently acquired a 1/2hp Robinson hot tube gas engine which was in running order, but needed some minor bearing work.

I had the engine running nicely using two adjustable gas regulators, but yesterday tried it with a homemade demand valve. The results were great, and the engine now runs much slower and smoother than it did previously.

The demand valve was made by reversing the direction of operation of an old Calor gas regulator, and it works well.

Here are some photos and a video:









Video link here: https://youtu.be/452MphJYbgI

I'm really pleased with how the engine is running now, and looking forward to rally it this season
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1922 5hp Stockport Ruston IP, 1923 Little Pet, 1929 Gardner 4VT, 1933 Ruston 6PB, 1937 Lister D, 1939 Ruston PT

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Old 06-02-17, 02:40 PM   #2
skankin_giant
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That's really nice Kev.
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Old 06-02-17, 02:44 PM   #3
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A very pretty little engine.

NHH
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Old 06-02-17, 02:45 PM   #4
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A well known local enthusiast rallies a petrol powered one regularly, a Lister D piston is fitted into the cylinder.

Pete.
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Old 07-02-17, 02:17 PM   #5
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Thanks for the kind words chaps. It's a lovely size engine, not so small that it runs like the clappers, and not too big to move around the workshop

Cheers,
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1922 5hp Stockport Ruston IP, 1923 Little Pet, 1929 Gardner 4VT, 1933 Ruston 6PB, 1937 Lister D, 1939 Ruston PT

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Old 07-02-17, 02:19 PM   #6
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I like that, you do seem to come up with some nice engines

Neil.
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Old 08-02-17, 08:50 AM   #7
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Quote:
Originally Posted by Hornet 6 View Post
I like that, you do seem to come up with some nice engines

Neil.
Thanks Neil
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1922 5hp Stockport Ruston IP, 1923 Little Pet, 1929 Gardner 4VT, 1933 Ruston 6PB, 1937 Lister D, 1939 Ruston PT
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Old 08-02-17, 09:50 AM   #8
wolseley phill
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Lovely machine, one of those is on my "engine bucket list"! What were these typically used for? Quite unlike anything else in appearance.

Phill.
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Old 08-02-17, 10:23 AM   #9
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They are often called the chippy engine and it appears this is not without some foundation as there are contemporary magazine adverts showing one driving appropriate potato processing equipment. Imagine that; queuing for you large cod & chips and peering through the door behind the counter to see what the noise was to be greeted by the sight of that wonderful little thing!

EDIT; Just looked on Grace's guide an there is a pic of one driving a chipper at the Beamish museum:-



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Last edited by nickh; 08-02-17 at 10:31 AM.
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Old 08-02-17, 10:47 AM   #10
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Thanks Nick, I'd heard one referred to as a "chip shop" engine but wasn't quite sure.... I don't think there is one in Meow's fish and chip bar, but it's a good excuse to go and check!

Phill.
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