SP 109 , Couple Questions...

[Danny D]

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.

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

 

[lexvil]

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

 

[halocline]

What's a M250?

 

[Danny D]

Good catch my bad, G250

 

[rhwestfall]

then yes

 

[buddhasummer]

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.

 

[buddhasummer]

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.

 

[rhwestfall]

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

 

[buddhasummer]

Wind direction too...

 

[Danny D]

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