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That's on a good day and spring time when it is not too hot.
Now in italy (my vacation address) on lake Como 900 mtrs high altitude she is running 57mph
But normally in Holland she is running 58mph most off the time it all depends on the conditions.

Nu gear ratio is 1,61:1 Alpha drive.
Open exhaust with mufflers into it.
But the mufflers cost me 100 rpm less,so also a little bit of speed.
It was so loud without the mufflers looks like an aeroplane
I loved that sound but my child who is autistic could not handle that.

Now I am in Italy lake Como on 900 meter high she is is not runni g so fast the temp is also killing (38 degrees celcius) the engine.

She is heavy on breathing

By the way liquid ,the 51 mph your running is exact the same as my 4.3 mpi did.

Engine is a Volvo Penta 5.0L GL. WOT range is 4400-4800 RPM. Gear ratio is 1.51 / 1.6.

So now my question is - Keep the three blade that Cobalt recommends for my rig (14.25 x 21 x 3) and get the Powertech SFS4 as a CHristmas present to myself... Do i exchange the 3 blade for the 4 at my dealer (14 x 21 x 4) that i (now) think is not the ideal pitch and give it a try... Or do I have my dealer order the (14 x 19 x 4) Volvo prop and exchange that for the one I have on there right now?

Fozzy - the above was from the prop thread last year. I eventually stayed with the original (14.25 x 21 x 3). I want a Stainless but have yet to decide one.

I think the same Enertia prop fozzy has will work.

Enertia,and when you tow a lot the high five

Did you bought the enertia?

No all he bought was a new stainless steel garbage can lid
Heck he even has to research what lid metal content to get

Liquid is testing again today.

https://youtu.be/8E3Y-xIGUu8

By the wat liquid where are the pics of your 190?
Can 't find then.

I think the Cookie monster ate his boat and prop. He must be busy at work still. So liquid picked up his new boat. But he's afraid it came from cuba