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Old 29-12-2015, 19:44   #1
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what is this? ( see photo )

Mate showed me over his just purchased center cockpit Roberts 38.
asked me "what is this"
I did not know.
See photo

Situated outboard, just aft of amidships, starboard side, in the tunnel leading to aft cabin.

Suggestions, questions / comments?
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Old 29-12-2015, 20:22   #2
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Re: what is this? ( see photo )

It appears to be a light.

Oh, the tank thing? Not entirely sure, can't really make out anything on the gauge. Reserve tank, pressure tank for water? I dunno (I just wanted to make the "light" joke)
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Old 29-12-2015, 20:34   #3
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Re: what is this? ( see photo )

Some light humor if you please.
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Old 29-12-2015, 21:19   #4
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Re: what is this? ( see photo )

Looks like an expansion chamber for the fresh water system. It holds the water under pressure between cycles of the pressure pump then the pump activates at a set psi.
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Old 29-12-2015, 21:33   #5
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Re: what is this? ( see photo )

Looks like a fuel tank for a pressurized alcohol or kerosene stove.
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Old 30-12-2015, 03:33   #6
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Re: what is this? ( see photo )

Yep, pressure tank for pressurised kerosene stove. I have one just like that.
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Old 30-12-2015, 04:20   #7
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Re: what is this? ( see photo )

Quote:
Originally Posted by bletso View Post
Yep, pressure tank for pressurised kerosene stove. I have one just like that.
A stove that you cook with or a stove that you heat with?
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Old 30-12-2015, 04:23   #8
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Re: what is this? ( see photo )

Could be either, or both, same tank.

Except I didn't see a fill or pick up.

Are there any hoses or tubes? What kind of stove does he have?
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Old 30-12-2015, 07:15   #9
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Re: what is this? ( see photo )

If your friend has access to the area under the tank, he/she should be able to identify whether there is copper tubing in and out or rubber or pvc tubing connected to the bottom of the pressure tank. That should define the tank's use in a plumbing or a fuel system
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Old 30-12-2015, 07:47   #10
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Re: what is this? ( see photo )

Definitely a light either not working or not on, have one just like it. The other appears to be a pressure tank agree either fuel or water. Possibly a hydraulic accumulator if you have a hydraulic steering system.
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Old 30-12-2015, 07:51   #11
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Re: what is this? ( see photo )

Scratch that hydraulic accumulator, pressure too low so my vote is tank for diesel or kero stove.
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Old 30-12-2015, 07:55   #12
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Re: what is this? ( see photo )

If it is a pressure tank for a heater fuel for then it would seem to be an impractical for you to pressurize it (usually with a bicycle pump). It would seem to be more likely a pressure accumulator tank for water. The plumbing to it will tell you for sure.
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Old 30-12-2015, 07:57   #13
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Re: what is this? ( see photo )

I'll wager it's an accumulator tank for the hydraulic steering


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Old 30-12-2015, 10:22   #14
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Re: what is this? ( see photo )

Well, you might follow the lines/hoses to see what it is connected to. Then you will know what it is.
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Old 30-12-2015, 10:39   #15
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Re: what is this? ( see photo )

Quote:
Originally Posted by Sailmonkey View Post
I'll wager it's an accumulator tank for the hydraulic steering


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I agree it may be. Xthewater doesn't do to pressure. A manual hydraulic system does not have that much pressure ie. Hynautic. I'm looking at one made by Hynautic, leave at 25-30 PSI with reservoir half full.
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