19 to 26 spline prop shaft adapters--shaft failures?
 

I have a boat with Kaama's and 19 spline long shafts. It appears that around 28pitch is about as high as 19 spline props go, which I assume is a designed limitation.

If a guy needed more that 28 pitch, it appears you need adapters, but is there a limit on what the smaller 19-spline prop shaft will take? Is it common (or has anyone experienced) a prop shaft break with the added load of a higher pitched prop/adapter?

You can find 19 spline props with more than 28 pitch. Having the adapters allowing you to run 26 spline props, does open up some prop options.

Brian Orlandi had some 18x30 four blade 19 spline props for sale.

[QUOTE=CDShack;4496940]I have a boat with Kaama's and 19 spline long shafts. It appears that around 28pitch is about as high as 19 spline props go, which I assume is a designed limitation.

If a guy needed more that 28 pitch, it appears you need adapters, but is there a limit on what the smaller 19

MT is correct I have seen 29,30,32 in a 19 spline. I had adapters on my Formula and never had a shaft problem.

Thank ya guys!