monstaaa

also did an 01 with 750 single 4's. 1:50 ratio, -2's, side by side standard transom. spining a tricked out set of 32 4 blds . ran 104@6000 +/-.
these hulls react to prop cup and diameter very well. i wouldnt hesitate due to hieght as stated above you can allways space down. water pressure is an issue. as for handling and plamning, a 19.5 start with -2's has no issues to really be concerned with just a lil more tab and 3 seconds or so slower planing.

1 MAIDEN AMERICA

Props aren't here yet. I'm not ready yet anyways, too busy at work. I did have a vivid dream last night that it went 135MPH!!! 101 might not cut it now.

monstaaa

its ok to dream,,,,,, and it may as well be big.

1 MAIDEN AMERICA

5 guys, 200 gallons of fuel, 5400RPM, 100MPH
5 guys, 60 gallons of fuel, 5400RPM, 99MPH
5 guys, 100 gallons of fuel, 3800RPM, 70MPH
I've noticed before that the boat slows when lower on fuel.
I didnt notice any speed change when trimming from 4-6, or tabbing from 2-4.
Slip's way up from before. Way longer planing time. Porpoises in the midrange at times.
But...100MPH

I set the drives straight/parallel.
I wonder about my innercooler PU tubes being too long.
They are mounted perpendicular to the running surface on either side of the drain plug, chopped at 45degrees, with the scoop side about 3/4" below the running surface. Innercooler pressure is 8# at speed.

Engine water pressure dropped with the new lowers from 20-25# to 10-15#. I watched for dropouts when turning and overtrimming and didn't notice any.

What do you think?
Thanks, Rob

BTW- the props I got ended up as 15.5"X35P with a 20 degree rake

aTX427

12-13% slip - Unless this is a race baot with no interior and light on fuel I have a really hard time believing your slip is that low, especially with bravo drives and a short stagger. Are you data logging the speed / RPM's? My boat was dialed in at the factory, has #6 drives and 6 blade Herings and the report has shows 107mph at 5350 = 16% slip. The best I ever saw was 104mph = 18%, however that is with a typical summer day, e.g., coolers, 3/4 full tanks, supplies, tools, etc.

aTX427

Wasn't that also a somewhat stripped down F2 boat?

1 MAIDEN AMERICA

Boat did 93MPH at 5350RPM from factory with stock 575's and 32 Bravos. About 11% slip based on 31pitch.
I added HP and got 96MPH at 5350RPM with labbed 32 Maximus'. About 11% slip based on 32pitch.
96MPH w/32P5x's and 96MPH w/34 Bravo's stopped by limiter.
100MPH w/35 Herings just shy of limiter.
Full cabin, no A/C, no crapper!

aTX427

Smartcraft tach readings or analog? My friends '09 38 Lighning with a full stagger, 700's, #6 drive and 6-blade Herrings is at 13% from the factory (115 mpy @5350), but that is a top of the line combo. I think the best he has seen is 110 - 111 mph (16% slip). However, we do run out of lake pretty quick at 100+ mph and can't stay in the throttle long enogh to really stretch it out. Would kill for 12-13% slip.

BKSAE

I believe those numbers. 2001-42', 95 MPH, 31 P5Xs, 5450 RPMs. 575 SCIs, tuned by Precision Marine and I have full cabin, AC, and Crapper.