ORIGINAL: lousyflyer
Any ideas as to what they fit? And what the little eyelet was for? It has a flexible section- even makes that BBBRRRRIIINNGG noise like a door stopper when you pluck it!
The spray bar for these was a piece of threaded brass (threaded the whole length) with Two brass nuts. It had Two "jets " drilled in it opposite each other (sometimes that varied). Because of it's design, it was considered a universal needlevalve assembly. The little ear was to "locate" the knob away from the prop arc. This was done by screwing the ear on the model, or as some have done(like me) you can remove a upper backplate screw on the engine and mount it there, either left or right.
I have never lost my desire to "pluck" a door stop spring, It still makes me smile.