Are stainless props worth it?

[Gobuchul]

I have a Yam F100 with a standard prop, which is still in good condition.

I am not looking for ultimate performance, tend to cruise at around 4000rpm.

Is there any point in changing to a stainless prop?

Would there be a noticeable change in efficiency?

[Pikey Dave]

If you’re happy with your current setup, leave it be. Any increase in economy will be minor, 10% at best & will take a lot of usage to recoup the cost of the prop. If you were changing because you had a problem with your current setup then you could look at stainless. There’s a school of thought that says an ally prop is kinder to the gearbox, I’m not convinced by that myself but it’s out there.

[Locozodiac]

Originally Posted by Gobuchul

I have a Yam F100 with a standard prop, which is still in good condition.

I am not looking for ultimate performance, tend to cruise at around 4000rpm.

Is there any point in changing to a stainless prop?

Would there be a noticeable change in efficiency?

Will need to determine firstly if current alum prop is an excellent water performer ?

-Need to know which is the min-max wot rpm range factory state for said motor.
-Max wot revs achieved on flat water cond "as loaded" (2)
-Check motor is revving at which side of the min-max wot rpm range.
-Will need a tachometer to dial exact (2) ear sound method is nada bueno!!

There's 2 top running options :

-If motor runs at middle wot range will achieve top end speed increase along slight hole shot decrease.
-If motor runs to max wot range will achieve top hole shot along slight top end speed decrease.

Which of both boating scenarios you'll like best for your particular combo ? this is a very personal choice. For me, max wot rpm as loaded while cruising nicely at 3/4 throttle (4.0-4.5 K RPM)

Don't go to SS props are costly, nothing that a 3 blade alum won't cure if pitched correctly to suit any of both mentioned scenarios.

Happy Boating

[jeffstevens763@g]

When I had the last rib I had an Ali and ss of same diamentions plus a ss with 1 inch increase in pitch on all the tests I did with the Ali and ss the Ali came out best in terms of top end and no noticeable change in hole shot or response that's OMO but I won't buy a ss prop to get 5% -10% increase as claimed for any other engine because my style of boating doesn't require it.

[Roflhat]

For most boats you won't notice any difference, for performance orientated boats it's 100% worthwhile

[gtflash]

Originally Posted by Roflhat

For most boats you won't notice any difference, for performance orientated boats it's 100% worthwhile

What he said ^^^^^

I’d have nothing but stainless as I been searching for more speed. But they cost more to buy, repair, replace and transfer more shock to gearbox in an impact.