Prop on Corsair 5 hp

[Buccaneer]

Just curious about this prop.
I’m not sure if this is a stock Corsair / Firestone prop
or not, but that part number looks reminiscent of
Firestone.
I don’t remember seeing this set up with a numerical
adjustment.
I didn’t have a “plan B” for another prop, so I hesitated
in trying to take this one apart.
Just speculating, but is there a torsion spring inside the hub
to adjust the spring tension, i.e., set it on #1 when going
down the “rocky” rivers, and #4 for “smooth sailing”?

Prepare to be boarded!

[Tubs]

Never seen a prop like that before. Looking at your other picture in
projects there may be a spring and cone arrangement similar to this
early Lockwood prop..
Tubs.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[Buccaneer]

Tubs, I suspect it may be of the same idea as your
Lockwood prop. One can see a flat looking retainer,
or perhaps spring in my photo, back side of the prop,
between the prop body and it’s hub.

Prepare to be boarded!

[frankr]

Here ya go……

 

[Buccaneer]

Thanks Frank. I can’t picture how setting it to different notches
changes the slippage, but perhaps if I actually had one apart
I could. Guess mine is a genuine factory prop, and not some
aftermarket gizmo.

Prepare to be boarded!

[frankr]

I figure 480-3138 screws onto 480-3140 to tighten the cone clutch.  480-3142 resilient washer provides a little “give”.  I don’t think they actually worked as they were supposed to. Either slipped too much or not at all.

[Author]

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