Rob after my 25 checkmate, I bought a 28 with twin 502 Mags and with Bravo 1s it had WAY to much stearn lift and the boat would chine and plow at the same time. Hard to drive and unpredictable. went back to turned up 27 Mirages, and the bow ran up nice no chine and ran mid 80s bone stock. do you have the Kplanes and Hyd steering? I would recomend talking to Mercury racing about making you a custom prop. I have used the exclusivly for the past 20 years, right know thay made me a set of special 32s runing 9% slip. How deep is the drive?

I have only run the boat for a 15 minute sea trial, and then a quick 30 min rip with the family in late October in MI. Before it was put up for the winter. However I noticed a couple things right away. Boat was only spinning 4900 rpm's, with about a 700 hp procharged 509. And running 75 gps. Bow was running very wet, and lots of chine walk. Has the factory tabs, and no steering yet. But that will all change soon! But knee jerk reaction is that this thing needs a different prop for starters?

Reinforcer runs over a 100 with I think 850-900 and if I don't sell mine before I put my motor back in and buy a SCX I will be over 100

100%

Damn, what has happened to OSO....

8 pages of responses and only two vague references to good Ol' TrippleDouche......

PS. my vote goes to Geoo's tricked out X18 Donzi at 120+. That thing is an engineering marvel.
Last time I saw it live, we were in the 1000 Islands for a Donzi Run. The weather had been ****ty for most of the day, but cleared up late afternoon. Geoo was laying down 100 MPH passes in front of Boldt Castle and the Coasties weren't budging off the dock. We went out in a Classic 22 and promptly got stopped. The were friendly enough, gave us a warning and asked us to pass the message on to our friend in the smaller Donzi, cause there was no way they were coming out to try to catch him.....

thank you!

I have tried every kind of prop on my single with decent hp and never could get a mirage pkus to ever work, would always break loose once it went into boost and slip in the 30% plus range, will be interesting to see if you can make one work. A friend of mine runs a 27 3 blade on his sunsation with near stock power, if you haven't found one to try when we talk I will borrow it for you, Smitty

I think I found some props to try a little closer to home. But after I get some base a/f readings, I am sure my ecm is going to need a little tune. Not to mention I want to put my smaller pulley on. We will chat soon.

I've personally driven a Laveycraft 28 EVO with an Ilmor 710 to its top speed of 105mph. That same 28 EVO now has a GT1200 in it and has seen 118-120mph.
I've also driven a Lavey 2750 cuddy open bow with 1000hp to 100mph, I believe its best speed so far has been 105mph

There is a scarab 28 that runs some thing like 120mph
http://www.youtube.com/watch?v=Y310zlAzaDw