23cc with twin yamaha f150's, numbers???

[23acrplanes]

Originally Posted by Bigshrimpin

wow . . . I'm amazed that twin f150's can't turn more than 17p wheels. I'll bet the motors are too deep.

I lowered them 2 holes because it was chine walking too much..... I will probably raise them back up. When I lowered it it def slowed the boat down quite a bit.

[23acrplanes]

Originally Posted by 23acrplanes

I lowered them 2 holes because it was chine walking too much..... I will probably raise them back up. When I lowered it it def slowed the boat down quite a bit.

I saw 47mph today at 6100rpm with tabs in, and a heavy load.

[doodlebug]

You went the wrong way lowering the motors. when I was running 250's on mine the higher I moved them the better it handled. 68mph on gps ran smooth as silk.

[DonV]

Duane you're killing me!!!!! 68 mph is some serious pucker power!!

I've had mine at 51 mph on the GPS with perfect conditions and that was good enough for me!!! 68 mph on a 23' SeaCraft, let me think about that for a minute. I've been on a 17' Hydra-Stream at 108 mph and I told the owner just take me to the shore, I'll walk home.....

[wattaway2]

Been told there can be a big difference in the way a boat response to twins depending on what direction the counter rotating engines are located if they rotate inward or outward --- what works for the 23?

[kmoose]

Originally Posted by doodlebug

You went the wrong way lowering the motors. when I was running 250's on mine the higher I moved them the better it handled. 68mph on gps ran smooth as silk.

Mine had twin 250s on it with the previous owner. Not sure how fast it got as the chine walk was so bad you couldn't hold it to find out. Now I run half the HP and still get 40+ knots fully dressed.

Here's a pick of the twins.....

[Old'sCool]

Originally Posted by kmoose

mine had twin 250s on it with the previous owner. Not sure how fast it got as the chine walk was so bad you couldn't hold it to find out. Now i run half the hp and still get 40+ knots fully dressed.

Here's a pick of the twins.....

dayummmm........😱

[doodlebug]

When I originally set mine up with the 250's they were turning in. Way too much transom lift would dance on the Back end and would not lift the bow 10 mph slower. Don, we ran from the St Pete peer to the Gandy one day wide open, needed ac it was hot out there. Not a wiggle smooth as could be. Miss running them monsters but not feeding um

[Briguy]

You need a set of stern lifting props.

[77SceptreOB]

I have a friend with a 23' SeaCraft "Savage" model which is basically a Sceptre that has had the windshield removed and a center console added. He runs that exact setup (twin Yamahas F150's) the boat seems ass heavy and sits at rest pretty deep in the water in the stern. Very noticeable, even with the weight of the cabin up front. He does have an Aluminum hardtop/tower though.

The hole shot is pretty strong, but not 2 stroke strong due to the weight. He gets about 50 mph at WOT which I think it pretty good. I don't know what RPM he is running at WOT. But based on the hole shot and the WOT, he might be a candidate to run a slightly lower prop pitch to help with the COG/weight so far back as his motors are mounted on a non-floatation bracket. IMO, its border line too much weight back there.