[PSUBS-MAILIST] motor oil compensator

[Alan via Personal_Submersibles]

Jon,
what you said may be taken the wrong way. 
The tube & the reservoir being of different diameters will compress to the same
level individually, but in combination as Brian has it, as he says, the water may go
up the tube & round the bend as the smaller volume in the smaller diameter tube
will be compressed into the larger volume of the reservoir.
A bit obvious but just clarifying.
Alan


> On 26/03/2020, at 1:22 PM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Units don't matter.  As you stated, the formula is pretty simple and applies equally to any unit of measure.  The interesting part to me was that tube diameter doesn't matter.  The air trapped in a .125 diameter hose will compress to exactly the same level as a 1 inch diameter hose.  As will that 3 inch diameter PVC holding tube.  So at 300 feet, using 30 feet of hose, you end up with an air-gap about 3 inches in height.  It looks to me like your design might work if you used a 90 degree elbow at the bottom of the PVC tube rather than a TEE at the top.  For sure, at 300 feet water will enter well beyond the current TEE placement.
> 
> 
> 
> On Wednesday, March 25, 2020, 03:50:13 PM EDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Jon,     Is the tube length in inches ?   
> 
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