Props with and w/o exhaust reliefs....
#12
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Joined: Mar 2002
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From: Milton, Fla!
Toffen, great job! Is the 350 Verado still treating you well?
jixall, interesting. Only does it w/those wheels and I'm gambling I just cured it. I had an identical rig to this and tried spinning them in and the boat hated it but that was w/3 blades so I may try it.
pstorti, a $50. 4" grinder w/a cut off wheel. Easy to do but takes a steady hand as the other side of the wheel is right beside the blades. Once cut I cleaned them up w/a sanding disc on same grinder. Came out great and no one would catch it w/o knowing to look.
So, so far I've improved hole shot 100% for free and maybe porposing too and maybe a little more up top. Sure don't want to take anything from the prop wizards making their livings at this but I beat on all my own wheels when I raced kneel downs and is big fun to see what works and hope you didn't just ruin your favorite wheel ('s)

My plan all along was to see if I could make the Bravos work on my Sonic and then send them to someone that knows what they're doing to make them right.
jixall, interesting. Only does it w/those wheels and I'm gambling I just cured it. I had an identical rig to this and tried spinning them in and the boat hated it but that was w/3 blades so I may try it.
pstorti, a $50. 4" grinder w/a cut off wheel. Easy to do but takes a steady hand as the other side of the wheel is right beside the blades. Once cut I cleaned them up w/a sanding disc on same grinder. Came out great and no one would catch it w/o knowing to look.
So, so far I've improved hole shot 100% for free and maybe porposing too and maybe a little more up top. Sure don't want to take anything from the prop wizards making their livings at this but I beat on all my own wheels when I raced kneel downs and is big fun to see what works and hope you didn't just ruin your favorite wheel ('s)


My plan all along was to see if I could make the Bravos work on my Sonic and then send them to someone that knows what they're doing to make them right.
Last edited by Twin O/B Sonic; 05-29-2012 at 11:09 AM.
#14
IMO Bravos are not a bow lifting prop. I had to trim a Bravo to the moon on my boat. Rev4 is a much better bow lifting 4 blade.
Good info on the vent holes and diffuser ring. I learned a few years ago that the vent holes matter even on a stern drive with thru hull exhaust.
Good info on the vent holes and diffuser ring. I learned a few years ago that the vent holes matter even on a stern drive with thru hull exhaust.
#15
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Joined: Mar 2002
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From: Milton, Fla!
The 24's should let the motors spin up a bit more and take advantage of the porting I did to them motors too so we'll see.
I remember Al Stoker telling me when I built FrankenRude I for the old Vector that the motor will determine what pitch to run and you'll be shocked to see what it is. I ran everything from 24" to 32" on that motor and there was only 3 MPH's between them all! Couldn't freagin believe it. Was fastest w/a 30" but a PIA to get it there and was only 2 MPH's slower w/a 26" drag and did everything better!





