1 MAIDEN AMERICA

02 38 Lightning, semi stagger, full cabin, 575SCi's w/704HP, -1 IMCO's 1.5:1, Hering 6bl 15.8"X35P w/22 degree rake.Finally got approved for drives and props (by you know who).The drives are on and props should be here in a week. As soon after the props arrive as I can we'll find out. It's a weather thing here in Seattle.How fast?Will it get on plane?Can I turn these props to 5350RPM?Boat did 96MPH on limiters hard (more than 1/4 throttle to go) with stock XR lowers and 32P5X's or lab 32 Maximus'

monstaaa

109- 111 say round 5000-5200. i dont think you'll get to the limiter with 35's with your ratio and -1's. unless you have a high x-dimension from the factory.

Beak Boater

5350 rpm with 35 pitch props, if it did run 111 that would only be around 6% slip. I say 105, if it can turn 5350 without over trimming the boat. I hope that you do run 109-111 and I am way off. I have screwed up before. Monstaa has set up many boats, so he is probably right. Either way show us some pics of the speedo, be safe, and good luck.

1 MAIDEN AMERICA

I'm hoping for 106 and happy at 103. The boat's run at 12-13% slip with several different setups in the past which would put me about 103 with the new stuff. Can't wait til the props arrive.
Stock X was 19.5". I don't have ITS either.

29scarab10

So are you saying that effectively with the 1 shorty that you have a 20.5 x deminsion?
Allen

Beak Boater

Thats still great.....its funny how we casually talk about V bottom boats running 103, 106, not too many years ago, that speed in a cat was unheard of. Fountains feel so safe at those speeds but it can be decieving, things can go wrong in a big hurry, so be careful, wear a lanyard and a lifeline, and I still wants some pictures of the speedo

monstaaa

03' 38 half stagger, its, 1:50 ratio, -2 imco's, 575's with a pulley, intercooler, brain re-map. 111.3 one way. 109.1 the other. half tank fuel. tachs said 5400. 34 x 15 3/8 hydro p5 with extended hub and polished/ satin finish.
you should be close. no its may drop 3 . steps are a lil diff.
you'll probably be in the 32-34 range with herrings.

good luck

1 MAIDEN AMERICA

19.5" X -1" = 19.5" X still but propshaft is 2.5" below bottom of hull instead of 3.5". Sorta like a 20.5 X just that the leverage of the drive on the boat based on a 23" propshaft to inputshaft dimension has been lowered. The plus is keeping the engine CG lower.

RaggedEdge

monstaaa,

What's your experience with the Hydro P5's on a 35 T/S? Mine is an '06 with 34" centers and a 19" X. Tom at Hydromotive was not real sure if the P5 or the P5X would be the pick, he was saying that the P5 would be better for a higher X set up.

1 MAIDEN AMERICA

-1 or -2, now that is the question. Was the question. I'm only looking for 100.5MPH or better (today) and didn't want to lose the rudder and planing ability. If I had ITS or extentions I would've gone -2.