Why is 200 hp a bit much for Vs ?

[Skools Out]

Originally Posted by RidgeRunner

Never wide open on our trips Reel. Besides, it won't achieve breakneck speed with the 23P prop until you lighten the load. Heavy load I see mid 50's Summer prop is a 21p Lightning that is close to the Mirage prop. Better mileage and tops out in the high 50's but is a better all round prop for fishing and cruising with a little more snap out of the hole. The 225 Optimax is pretty strong Genie Aye, I have a friend that replaced his twin 250's EFI with twin Optimax 225's with the same lower unit gears and he ran out of prop. I am not disputing the prowess of the 200 HO, I would take that in a heartbeat. Perhaps the difference lies in the center console versus cuddy on MPH?
Porpoise is non existent with normal trim angles, even with 30" setback. And I think the 250 is pushing 500 lbs.

your prop info makes no since, it's totally backwards, a higher pitch prop adds speed and hurts bottom end take off so your 23 pitch should go faster than your 21.

[RidgeRunner]

Not this time. Re-read. These are my observations.
You assumed mid 50's was the top-end with the larger pitch prop.

Speed prop 23P Tempest Plus does go faster, best I have seen is 63 MPH last February on the Suwannee. The best speed was obtained Boat Light, trimmed to the moon and some trim tab, motor turning 5800 on the limiter, down stream, 78 degrees, humidity 75%. Tons of propslip but it gets the bow way up. Same prop with 4 or five people in 90 degree weather and 95% humidity will only run 54 mph and the motor will only turn approx 5500 RPM trimmed to the max. Slightly too much prop for fishing load or skiing.

The 21 Lightning (Mirage copy) has huge round ears with lots of bite, and is slower on the top end I think it was 58mph (light load, trimmed proper and on the limiter). Summer prop because the 95 plus degree days hurts the performance on this EFI 250 compared to the cool winter months when it runs best. The smaller pitch prop carries the load of four or five people with less strain while allowing the motor to turn more RPM at WOT . Economy is better because the motor isn't being lugged around at every RPM range.

In theory you are right that higher pitch props add speed but only if you powerplant has the balls to turn the prop. The 25P Tempest on my shelf was no faster that the 23P because the motor could not achieve the necessary rpm to make that a reality. Fuel economy sucked worse than normal but it would cruise 40 at 4000 rpm and 50 at 5000 rpm

[RidgeRunner]

Genie Aye, is the Optimax 225hp dead on at the prop or does the 10% rule apply?

[bgreene]

Ok, now I'm upping the ante....... the new Yami " lightweight " 300hp 4 stroke.

And if someone has a problem with that......lets put that new 556 hp outboard on a nice V21. You know - this new 1,000lb motor. First V21 ever to run .....70 +

[draglink]

Hey Bgreen, you buy that Caddy for me and I'll bolt 'er on and try her!

[bgreene]

I just re read this post - interesting info about performance and prop's.....

[Genie Aye]

Originally Posted by RidgeRunner

Genie Aye, is the Optimax 225hp dead on at the prop or does the 10% rule apply?

I beleive that is at the prop.

[Striper80]

My uncle has an 89 v20 cuddy with a 225 Yamaha 2 stroke and it hauls ***. He had a 130 on it but blew the power head. His mechanic had the engine as a fresh rebuild so he gave him a good price. All he does is ***** about how the thing eats gas now though.

[Destroyer]

Originally Posted by Striper80

My uncle has an 89 v20 cuddy with a 225 Yamaha 2 stroke and it hauls ***. He had a 130 on it but blew the power head. His mechanic had the engine as a fresh rebuild so he gave him a good price. All he does is ***** about how the thing eats gas now though.

You never get something for nothing. More power demands more gas. It's as simple as that.

Nice looking numbers Pete. And a good looking dash setup as well.

[spareparts]

Pete, I'm surprised your not spinning at least a 21 on that opti