[PSUBS-MAILIST] air compensation

[hank pronk via Personal_Submersibles]

 Cliff, as much as I like the magnetic coupler idea, the air compensation system is looking very good.  Alan has been preaching about having an over pressure, and  seems the answer.  This regulator setup allows for that with real simplicity and looks very clean.  I will keep you posted on results from upcoming dives.  The nice  part of this is the regulator is dirt cheap on Amazon.Hank
    On Sunday, July 30, 2023, 01:20:30 PM MDT, Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
  I should have read your post before I just sent this email.  I came up with 1.5 scf.  Answer depends on assumptions of surface and bottom temperature.
    On Sunday, July 30, 2023 at 11:49:28 AM CDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
  Can someone check my math?  I’m trying to get a better handle on air compensated consumption.  At 37oz volume, each MK101 would consume .03864 cu ft of air at sea level and .34776 cu ft of air at 300 foot depth.  Given four motors that would total 1.4 cu ft of air consumption per 300 foot dive and allow for approximately 57 dives with an 80 cu ft tank dedicated for the motors.  
Cliff, does this sound accurate or do you feel you were consuming more air than these figures would indicate?
Jon


    On Sunday, July 30, 2023 at 10:37:07 AM EDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Cliff, I am wondering if you can reduce the volume of air inside the motor to reduce air consumption?  Maybe some form fitted plastic inserts between the magnets etc. I have just discovered a nice feature while connecting my rear thrusters to the air compensation  system this morning.  You can pressure test for leaks with your soapy water sprayer. Hank_______________________________________________
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