42 fountain performance?
 

I'll be finishing up my 1993 twin full stagger / bravo 42 executioner in a month or so. Hopefully lol

Running 575 -600s...bravo drives

Any idea on what it should run for cruise and top speed?

Also...what x dimension should I be running ? Bout to cut the new transom.

Thanks!

What drives?

Bravos. ..dang forgot to put that

According to the calculator http://www.go-fast.com/boat_speed_predictions.htm you will be about 82mph. That sounds about right for a straight bottom boat.

Damn that would be badass. Thanks man!!

But idk if I can see that. Alot of guys on this forum are posting 70s with side by side straight bottom 42s...:(

My friends straight bottom 42 with side by side trs is mid to upper 70s. Never dynoed but roughly 600-625 a side.

Thanks man!

Does staggered engines make a big difference? I've heard it makes 10 mph diffference....lol....and I've heard it makes none at all

What engines is he running ?

Not an expert, but just look around at all the performance V bottoms and the fast ones are running staggered applications, Fountain, CIG, etc. I have heard the same as you, but in the 5-10 mph range.

Exactly ! Reggie 3 said low 80s are possible with my setup

Staggered isn't the largest speed difference. The speed difference is in the steps. Staggered will make some difference in less drag because drives are closer together so less below the hull.

A full stagger 38 vs my semi stagger 38 is about 10MPH faster. Same hull I believe. Probably because it gets cleaner water, and handles better due to lower/centered CG. Just can't fit as many skanks in it.

Lmao .....skank capacity is always a key factor.

http://www.offshoreonly.com/forums/f...lightning.html

Read this thread. A side by side twin step 35 with 496s claims 79 all day every day. Staggered twin step with 496s claims 82 all day. Both twin step 35s. 06 and 07.

that's hard to believe... in the 42's there not much difference in a big step twin, from what I've seen personally

Stag allows u to raise the x up as you are closer to the keel.

That and the thrust is even down the center, with a better CG. Speed comes up a bit but handling is the big plus.

Edit: well not around the docks though.

Bump.....any body have any more input

Basically you will definitely have a speed increase, the boat should "fly" better as your closer to the centerline with weight. You will have less maneuverability around the docks.

77-78mph

Honestly 77-78 would be awesome.....

Reggie lll adviser to run x dimension 1 inch under the hull with 5 blade maximus props. Will I be able to plane well with this setup? I could always space it down I guess

Drop it in as is first see what you get. That boat will be fastest with 3 Blade Mirage prop in stock forum. It will plane easily and slice through chop and boat wake like butter. If you want speed get a 2005 and newer 38 Lightning

I just had the boat converted from trips to staggered twins....new blank uncut transom....new stringers. So there is no x to start with.

Reggie lll suggested 1 inch under with 5 blade maximus. I'm fine with that. I'm running transom mounted pickups.

Just looking for info / results on what my plans are.

Buying a new boat is out right now. I was shopping for a turn key boat when I got this one.



O5+ 38 lightning = 100gs +

1993 42 executioner with staggered bravos and new 575 hp 509s...30gs on the water with brand new trailer.
....no payment. So I'll stick with what I have for now.

Max, if you want to get the most out of your straight bottom staggered boat you will need to run standoff boxes to move the drives further aft for more leverage to lift the boat and get clean waterflow. The staggered configuration allows for a lower center of gravity and brings the drives closer together for a more uniform thrust (remember when you re-rigged you Checkmate to 18" centers?). The other reason I bring up the standoff boxes is due to the CG (center of gravity) balance. When you have one motor moved far forward in the hull you CG moves forward which means you will need more lift. Setting the drives on standoff boxes will help give you the lift to counter the forward weight of the staggered setup..

Thanks bro!

How you been Steve ???

I'd like to have boxes...but dayum....they high as hell lol