Commander #256 (Ceili)

[ebb]

Chance,
It looks like you wrote the book on this subject.

From the color of the material can guess you got G10 Garolite which is made with glass fabric and epoxy. So it should marry well with the hull. Even if you are not through bolting the adapter flange through the hull.
For any reader inspired by this method, it will depend on the quality of epoxy used to glue the plate to the polyester hull.

I can see doing it.
Most interesting and innovative is tapping the Garolite for threaded machine screws (or rod) to attach the flanged adapter.
Imco most normal and DIY glass reinforced plastics would be two friable for tapping in threads.
This may be a caution to others trying it.
There are denser Garolites composed of cotton and linen impregnated with phenlic resin that would take threading - BUT might be problematic cold gluing/bonding dissimilar plastics with epoxy.
Impressed with your compassionate reasoning that looks ahead, making it easy for the next fool with his head in the bilge.
It is also conceivable that the Garolite disk itself - with the adapter fastened to it - can be through bolted to the hull - IF NEEDED.
[For Ariel/Commander owners this could be a problem because the hull might not be thick enough to take the chafering needed to bury flathead bolts.
I found the hull on A338 to be too thin for 5/16" flatheads and had to add layers of epoxy and Xmat inside. Not a bad idea, just another expensive step.]


Chance, can we see what the valve looks like on the adapter?

Not only do you write book, you illestrate it too - excellent photos!