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Old 05-12-13, 08:59 AM   #1
Join Date: Apr 2010
Location: Whangarei NZ
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Exclamation Petter Atomic 3 cylinder

Hi all our club is just in the process of restoring this engine. Originally out of a ship it ended up in a sawmill in Fiji and fortunately our club was able to acquire it as it was destined to be buried. The engine was made in 1932 and produces 145 BHP at 375 RPM and weighs around 7 ton. We are currently fitting the pipe work and it is quite a puzzle. Does anyone out there have pictures of a 3 cylinder atomic or know of any 3 cylinder versions other than ours still in existence?
P1040788.JPG P1040789.JPG P1040790.JPG P1040791.JPG
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Old 05-12-13, 11:36 AM   #2
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Hi Regs,

that is a beautiful engine. I've seen 3 cylinder Atomics crop up now and again, but can't recall one that big. big fan of the Atomics myself. singles and twins are much more common.

Paul Sterling A Stationary Engine Obsessionist
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Old 15-12-13, 11:46 AM   #3
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I have a 2 cylinder Atomic, 50 HP, and the pipe-work is very straight forward. Looks like the marinisation of the engine has complicated things. Is that all cooling pipes? mine drove a sawmill and was thermo-syphon tank cooled but I now have it set up with a pump and it finally runs beautifully. Next run will be at Gosford (Central Coast Machinery Club) January 18-19th. I'll also have my "S" Type 18-21HP at the show - just had its first start 2 weeks ago after 60 years in mothballs. Best of luck, Andy
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Old 06-03-14, 10:28 PM   #4
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Default Petter 3 cylinder

There's a T25/3 currently being installed at Internal Fire museum, should be up and running by Easter if there are no unforseen problems.
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Old 15-11-17, 08:15 AM   #5
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Default Petter Video

Finally got our clubs petter running right, and to think if we didn't save this engine it would have been buried where it sat in Fiji.
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Old 15-11-17, 08:51 AM   #6
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I like that!

Potest non melior Petter. milia passuum melius quam Lister
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Old 15-11-17, 10:04 AM   #7
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Very nice and well done to all.

Get the cameraman a steadycam attachment, or chain him down! Makes me dizzy watching it.

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Old 15-11-17, 11:09 AM   #8
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Never mind the wobbly camera work - close your eyes and enjoy the soundtrack!

Very nice, well done for saving it.

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Old 15-11-17, 11:13 AM   #9
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Nice, thanks for updating us.
The Wizard from The Lizard
WW1 ABC, Brockhouse Spryt, Norman SC, Sattley TA, Scott SE, Stuart H1, K, Pre-P3 & WD, Villiers WX11
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Old 15-11-17, 11:46 AM   #10
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Wonderful. Well done.
Reminds me to get in touch with a local industrial museum that has a big four cylinder jobby bricked up in a corner.
Regards Paul

Tha can alus tell a Yorkshireman - but tha can't tell him much.
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