[PSUBS-MAILIST] prop guard

[Rick Patton via Personal_Submersibles]

Hank,

I know nothing about Kort nozzles compared to most on this site but it
seems that the gap between the tip of the prop and nozzle wall is very
important and the edges of the nozzle may have to be flared too??
That's my 3 cents worth.

Rick

On Tue, Jun 21, 2016 at 3:30 PM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Today I did some more Gamma testing diving etc and I think my prop guards
> are interfering with performance.  When I am under way the prop does not
> sound smooth.  There seems to be turbulence, or so it sounds like.  When
> originally I tested the motors in the lake by just holding on to them,  the
> performance was poor.  When i took the prop guards off they were
> fantastic.  So it seems a Kort nozzle is good but a random tube around the
> prop may be bad?
> Hank
>
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