[PSUBS-MAILIST] k250 size

[Daniel Lance via Personal_Submersibles]

Sean ,
You're  correct . A 36" diameter  2 to 1 elliptical head is 9 inches
(22.86cm)deep. I made the mistake of referring to the K250 drawing . I
should know better ...both the K250 and K350 drawings are full of mistakes
and inaccuracies. I did what I should have done in the first place....I
went out and measured a head on my K350....9 inches ! Imagine that !
So that revises down the overall length of a K250 hull to 66inches
(167.64cm).
Dan
On Mon, Aug 7, 2023, 12:02 PM Sean T. Stevenson via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> On a 36" ID cylinder, a mating 2:1 semi-elliptical head would be 9" from
> the inside center of the head along the major axis to the plane at the
> curvature break at the end of the cylinder. If you're measuring (or if the
> plans show) a 14" depth of head, that would seem to indicate either that
> the head is of a non-standard elliptical form, or is torispherical (not
> elliptical), or is simply manufactured with a substantially longer (5")
> length of straight flange than is specified by the rules.
>
> I am curious to know which?
>
> Sean
>
>
>
> -------- Original Message --------
> On Aug. 7, 2023, 09:16, Daniel Lance via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> Rapheal ,
> The cylinder section of the K250 hull is 48" long ( approx. 121.92cm) X
> 36" (91.44cm) in diameter .Each elliptical head is approximately 14"
> (35.56cm) deep  X  2pcs  . For a total pressure hull length of
> approximately 76" (193.04cm).
> Dan Lance
>
> On Sat, Aug 5, 2023 at 1:08 PM Raphael SOULIAC via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Hello, quick question for the k-250 owners/builders. What are the
>> dimensions ( specially the length) of the pressure hull ? Thanks
>>
>> Raphael
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