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Re: [PSUBS-MAILIST] Main ballast.



Its a good idear - special on a ambient sub. 
Many modell subs have piston tanks. 

No way for a dry 1atm. boat - to much energy needed
to push the piston out in greater depths.

But allmost only a litttle force on ambient subs.. 
just the resistant of the seal..

Should be driven electric or pneumatic 
and with a emergeny hand handle ?

regards Carsten

Pierre Poulin schrieb:
> 
> Since my sub is a dry ambient,
> 
> Could I use some sort of cylinder with a piston that can be moved inside
> with a screw. On one side of the piston, ambient water, on the other side,
> ambient air from inside sub.
> 
> You just turn the screw one way to get water in. turn the other way to push
> water out.
> 
> What about that?
> 
> Pierre Poulin
> 
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