242LS prop testing with video
 

https://www.youtube.com/watch?v=DH39taG2bxE

https://www.youtube.com/watch?v=fK85agU0B1Y

User Mohawk242 and I doing some late season prop testing. We built up a 454 to similar specs as the HP450 & HP500 last winter. 2 way pass average on GPS was 69.5mph at 5400rpm. With the stock 365mag he was 57mph. This was with a 23 mirage plus.

Tried a non-plus 25 mirage, didn't really like it lost bite and cruise speed wasn't any better. Maybe less cup couldn't carry the bow in the smooth water?

Tried a 25 mirage plus, brought the rpms down to 4900-5000ish, lost a couple mph on top speed. I think the motor just isn't making as much power at the 5000rpm range.

Note the silent thunder platform is temporarily off for a repair. Much louder but no performance change.

It seems most stock 502mag 242s run 62-63 so he is definetly making the horsepower because he can run quite a bit faster than this.

I will let him chime in, but since I took the videos, I figured I would make a post on it.

very nice!

It did sound nice and the numbers sound good.

I'm looking at picking up a 4 blade prop over the winter to try out. Anyone running one with a similar set up? What numbers should I expect?

get yourself a bit of chop and add 2 mph:flag:

12.5 mph gain is fantastic ! Congrats you two.

That thing is trimmed nicely! Sounds and looks good!