berns29scarab

lemme ask you guys your opinion. i'm running a 30 spectre with 300 x's with 20" sportmaster lowers 80% bay use average a 2 ft chop. spinning 15x32 3 blade cleavers to 6400 rpms @wot. looking to increase mid range acceleration. right now at 4500 rpms put me in the low 70's. spend most of my time between 60-90 any suggestions. holeshot is fine and top end is fine. i know i'll probably have to give up a little up top and i'm ok with that. would like something a little smoother and easier on the gearcase as well. prefer a 4 blade of some kind

berns29scarab

here she is by the way

bryanh

We have been very succesful with 30 4 blades for accelleration and it depends on your motor height as to if you run a 15 inch blade of 14.5. If you drop your motors a bit the 14.5s will spin more RPM. If you are only running in the 90's 28's will give you even more.

bryanh

Hey Steve you know that the only people to deal with in the offshore racing propellers is Matt and Julie from Throttle Up! They are the best of the best and I will only let them touch my props. They are proven winners!

stevequick

Bryan,
I need Throttle Up's address, phone, E-mail and any indecent photos of Julie you might have ASAP. We need something special for Sarasota, if you are coming.
SQ

berns29scarab

bryanh, the best i've gotten out of her is 105.5 at 6500 rpms...perfect conditions, 50% fuel etc...its a legit 102 mph boat

bryanh

Where is the RPM limit on your motors?

berns29scarab

6800 rpms

berns29scarab

bryanh...what motors and props are you spinning. i've got 20" sporty's unsure of gear ratio's

dreamboater

your ratio is 1.62. 4 blades will cruise better and provide less vibration. Since you are not worried about 1-2mph top end loss you really should look in to them.


What would be the major benefit of dropping the motors a tad and running 14.5" vs 15" diameter props?? If water pressure is still on the safe side wouldnt the 15" props hook up better providing better slip #'s??