prop hub

[Bosun's mate 1st class]

I need to replace hub in a Michigan prop: stamped 13 X 15. Prop was seized to my '96 , 75 hp Honda. Had to use torch and special incantations to remove prop. Old rubber hub destroyed. Are the hubs for these (stainless) props all standard, such that I can give info regarding dia. and pitch, then have hub sent to me...or is there more to it?

 

[Texasmark]

Re: prop hub

Probably prop dimensional dependent; maybe half a dozen standards out there.

I never tried it but it's probably not hard with an adequate press. I don't know how many psi it takes to drive one in but surely it takes a lot since the rubber to metal interface has to resist some serious torque for a long time on the larger diameter props.

I always took mine to a prop shop where they not only did the installation, but checked the runout on the installation to ensure vibration free performance.

Mark

 

[Frank Acampora]

Re: prop hub



Go to HMShubs.com. Rubber hubs for all newer props are carried there. The rubber hub for a stainless prop is 80 shore durometer while hubs for aluminum props are 70

800-272-hubs (4827)

Pressing in is not difficult at all if you have a press. In a pinch, a bottle jack and home made frame will do. Hubs are pressed in with a 2-6 ton press and a tapered ring. I use the outer race from a tapered roller bearing. Soapy water is used to lubricate the hub during press-in. Let the prop sit a couple of days to "lock-up" before using it.