5 blade on scarab 22
#3
Registered
Joined: May 2006
Posts: 448
Likes: 0
From: Jackson, Mississippi
Fast,
I don't think you will gain anything. More blades = more drag on top end, more blades be more bite in turns and rough water, a five blade helps with props piercing the surface, more blades are perceived to be smoother than a three blade. Going to get more stern lift with five blade. Wellcraft spent a lot of r&d to equip the hull with a 3 blade(4 were available). I don't think you have a enough slip to warrant an five blade. I would just contact BBblades and try one out if you think you're missing out. I know you got a lot of top end now.
I don't think you will gain anything. More blades = more drag on top end, more blades be more bite in turns and rough water, a five blade helps with props piercing the surface, more blades are perceived to be smoother than a three blade. Going to get more stern lift with five blade. Wellcraft spent a lot of r&d to equip the hull with a 3 blade(4 were available). I don't think you have a enough slip to warrant an five blade. I would just contact BBblades and try one out if you think you're missing out. I know you got a lot of top end now.
Last edited by pitts1313; 05-03-2011 at 08:38 PM.
#4
Generally spoeaking, I'd think your drive is mounted too low to truly take advantage of or need a five blade. Now if you had a shorty lower, that might be a different story.
As others have said, you do have to be careful about putting a newer design prop with more blades on an older hull. I borrowed a Spinelli 4 blade for my Progression 22 a few years ago. Keep in mind that I have a jack plate and the motor is way up the transom. The extra blade area (and rake) generated so much stern lift that I thought the boat was going to swap ends in a gentle 45 MPH turn.
Then again, I have a Trophy 4 blade that the boat likes reasonably well. I still run faster with my Bblades worked and labbed Yamaha 3 blade though.
As others have said, you do have to be careful about putting a newer design prop with more blades on an older hull. I borrowed a Spinelli 4 blade for my Progression 22 a few years ago. Keep in mind that I have a jack plate and the motor is way up the transom. The extra blade area (and rake) generated so much stern lift that I thought the boat was going to swap ends in a gentle 45 MPH turn.
Then again, I have a Trophy 4 blade that the boat likes reasonably well. I still run faster with my Bblades worked and labbed Yamaha 3 blade though.
#6
Registered
Joined: Oct 2009
Posts: 658
Likes: 0
From: Splendora, TX
I have 5 blade Maximus props on my 1994 Cigarette Top Gun. Dry weight is 11,500lbs. Then add 220 gallons of fuel, people and ice chest. Have 600 hp on each motor. I not only have bravo drives, but I have the old style with the 1 inch prop shaft. When I had 4 blades, I could feel vibration during certain rpms. When I went to 5, that went all away. Everything is smoother and my prop slip for cruising went from 25% to 13%. I am easy on the throttle. I have lost alot of top end though. Too much stern lift. Had to get them labbed to get the nose up. 50+ hours, no problem yet. Get Halo Max drive shower.




