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SP 109 , Couple Questions...

Discussion in 'Regulators' started by Danny D, Jul 31, 2020.

  1. Danny D

    Danny D Solo Diver

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    Two questions in regards to the SP 109

    1. S-Wing balance assembly for the SP M250 second stage , would the addition of the newer curly foot lever be all that I need to drop this into a 109 ? I’m speaking to this exact one pictures below.

    6198E33C-D8B9-441C-8407-5480ED1DD658.jpeg

    2. Does the M250 diaphragm work in the SP109 or does it take a different one?
     
  2. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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    I would first try the original lever, I have had more luck with the pre curly foot. Same diaphragm
     
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  3. halocline

    halocline Solo Diver

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  4. Danny D

    Danny D Solo Diver

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    Good catch my bad, G250
     
  5. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

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    then yes
     
  6. buddhasummer

    buddhasummer Feeling the Love ScubaBoard Supporter

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    I'll second the yes. FWIW I've had more joy doing that conversion using curly feet.

    On a G250 with s-wing both work but IME the curly feet .141 gives a greater range of cracking, that is you can comfortably get 1.1", I have had trouble getting that high using square feet lever on a G250. YMMV. Good luck.
     
    lexvil likes this.
  7. buddhasummer

    buddhasummer Feeling the Love ScubaBoard Supporter

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    Of course it's not quite that simple, there are other factors in play, spring, condition of orifice, suppleness of diaphragm...which way your tongue is leaning.
     
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  8. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

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    @buddhasummer - you forgot to include which phase the moon is in....
     
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  9. buddhasummer

    buddhasummer Feeling the Love ScubaBoard Supporter

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    Wind direction too...
     
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  10. Danny D

    Danny D Solo Diver

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    King tides and Unicorn encounters reverse all previous statements of coarse.
     

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