Pat McPherson

Hey Zup, you are being way too modest. You've got the Zuperboat dialed in and she's probably the best running Superboat in existence today. It only took you about 8 years...

Superbabi vs. MDG is not only Bravo vs. Konrad but older hull vs. newer hull...

Superbabi

Mike, yes 5500 rpm's. on the Ron Potter Motor. Pat, I would guess an 800 on the newer bottom would be in 95-96 range with the XR.

z.zuperboat

Gary spinning a 32p at 5500 with a 1.5 gear and 94mph gives you a slip of 15% Spinning a 30p at 5500 gives you a slip of 10%

Superbabi

Mike, we played with a merc. maxiums 5 blade 32 cut down, more like a 31. That hull likes the odd sized props, with the 600 sci it was a maximus 5 blade
28 cut to a 27. So I guess the slip is at 13%.

MDGperformance

My set up spins a 29 p5x hydromotive lab finish,94 at 6000rpm,i have also run a bravo 1 31 labbed 92 at around 5700-5800,one thing that i have noticed is that boat picks up rpm and speed with a lot of trim,doesn't seam to lift the bow much more but seems to losen up prop,most step hull v bottoms reach top speed at very little positive trim,was thinking if drive was a little higher might losen up prop a little.Was also thinking a 5blade herring might be nice prop on this set-up.Also another big factor is weight,mine has the race lay-up not sure if any lighter,not sure on garys hull,zuperboat hull i heard was built super light and has always run real fast

z.zuperboat

Slip with the 29 is 14 % and the 31 is 17% . Good slip numbers mite not be the fastest top end. Go figure.

Pat McPherson

And from the other post:
Gary spinning a 32p at 5500 with a 1.5 gear and 94mph gives you a slip of 15% Spinning a 30p at 5500 gives you a slip of 10%


Hey Zup,
How's my slow boat doing?
68mph at 4600rpm with a 26p...

Pure Energy

Well, my last run in Oct was 84 mph. 775 hp, 29 L hydro, 5600 rpm. 3 guys, less than 1/2 fuel

Last year we hit 90, same prop @ 5900 rpm, no fuel and 2 guys

Same water conditions

z.zuperboat

Pat Velocity hulls usually have good slip numbers. Its the pad. You numbers for 4600/26p/1.5gear/68mph give you a slip of 9.9% . Great number. PE ,s 5600/29p/1.5/84mph = 18% 5900/29p/1.5/90mph=16% Gary,s boat going from 15% to 10% at the same rpm with less pitch could be from different prop designs/ diameters and number of blades. My boat with a 5 blade had great slip great grip but slower top end. Like Pat said earlier Ive been messing with my boat for 8 years. Ive give all the credit to Skip over at MRD. I should have just dropped off the boat their 7 years ago and I could have saved alot of time.

Superbabi

Mike, remember Rick Blueprinted the Superbabi bottom, how do you think slip numbers play into that ???