J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Official prop thread

look at the blades and you will see a closed resting point ... there is a similar resting spot for blades open there. I'm thinking there are matching surfaces in the slot inside the hub opening.

the metal apparently is soft enough to "dent" and actually wears off enough so that the blades no longer will be held slightly apart or "perfectly" aligned when open. this is on both surfaces. I'm thinking standard program of adding more metal than you need and grinding down prop stops to "perfect" space.

The surfaces "erode" away over time in salt water.

somewhere I have a photo of old blade vs new blade and the edges of the old blades are eroded to almost knife edges and the stop surfaces a mashed a bit. if I ever find it I have a "before" and "after" 15 years of use photo.

Down here they Paint the props and I am wondering it helps or hurts the metal.