cleaver prop

[Jordan macha]

How do I know if it's a fat/big shaft or small one? Snapped one of my shafts and lost 15/30 cleaver prop.

[Hoss Marine Propellers]

How do I know if it's a fat/big shaft or small one? Snapped one of my shafts and lost 15/30 cleaver prop.

Since you say "one of my shafts ", I assume you have another engine or lower unit?
If so, count the splines on the shaft...... 15 tooth is small shaft and 19 tooth is large shaft...... if you snapped it, it's probably a small shafting?

[Hoss Marine Propellers]

Oh Yeah ........ welcome to S&F !!!!!!!!

[Jordan macha]

Thanks Tim. Yes I have 1998 mariner 300's. Been driving ski boats and finally stepped up! Going to check it out now.

[Hoss Marine Propellers]

Thanks Tim. Yes I have 1998 mariner 300's. Been driving ski boats and finally stepped up! Going to check it out now.

300's should have big shafts?

[Jordan macha]

What I assumed. Can I run 32 pitch props instead of 30? How big of a difference?

[Hoss Marine Propellers]

What I assumed. Can I run 32 pitch props instead of 30? How big of a difference?

Depends what rpm you're turning with the 30's?
Normally would loose 200-300 rpm when you change pitch like that?

[Jordan macha]

Motors are 6100 max rpm