Yes.

Your engine config is marginal with this prop.

I had one on a V6 170HP Volvo sterndrive a few years ago. I lost TWO blades
in relatively rapid succession with no impact, not running over anything,
nothing.

Both blade failures occurred while attempting a deep-water ski start.
That's maximum load, of course. Both incidents required an in-water removal
and repair of the prop, which is not hard to do, but a royal PITA when it
occurs due to no reason at all.

If you had less power, it'd probably be ok. However, load 'em heavily and
the blades will break on it in my experience.

I gave up on the prop after the second failure. I still have it in my
garage, but it sits unused.

While it stayed together performance was good.

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In article ,
Jeff Brown wrote:


Anybody have any experience with the segmented composite props like the
4-blade Pirahana?
Pros and cons from the real world? As always the ads look good.
Most of the use will be for wakeboarding and cruising. I am looking at an
18P x 4 blade for an '86 20' Chapparal with 305 Alpha 1. Currently using a
17P alum 3 blade which will over-rev up to ~5100. 19P x 3 blade alum yeilds
top rev of 3800 and no pull.
Not keen on SS due to cost and potential damage to lower drive if I hit
something in the water.
Thanks in advance.
jbrown