> Born to be WillD Wrote:
> -------------------------------------------------------
> is it on both case halves?
>
> If you're just looking at that little ridge, that's to smooth the
> transition to the skirt. like theres still a ridge on the pa2's; it's
> just set back and serves not as a physical impediment to derestriction
> but is actually a flow improvement. I think.
>
> another case difference on the 1's is the little hole for the reed
> block, theres a nub on the reeds too, and on the pa1's it's smaller so
> only the 1 petal reeds fit. so the reeds wouldve had to be modified to
> fit a PA1 case if it was ever a swap over. most people grind the nub off
> but you could drill the case hole bigger too i guess
The ridges are only one the one case half, which made me wonder why they were there at all if not to restrict. The hole for the reedblock was the correct size for the pa50ii reeds. I was almost certain this was a 50ii motor I just didn't understand why they would bother making the nubs on this one case half if they didn't do anything