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-   -   5 blade on scarab 22 (https://www.offshoreonly.com/forums/prop-talk/252778-5-blade-scarab-22-a.html)

fastscarab22 05-03-2011 04:23 PM

5 blade on scarab 22
 
Has any one put a 5 blade on a scarab 22, and with what result. I am talking about a scarab with good power not stock

firehawkcat 05-03-2011 06:12 PM

There was a post a couple of days ago i believe the 5 blade puts a alot of stress on lower unit Bravos dont like stress

pitts1313 05-03-2011 08:26 PM

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.

Too Stroked 05-05-2011 12:46 PM

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.

fastscarab22 05-05-2011 02:03 PM

I do have -1 inch imco on it, and i just bought a spinille to try on it should be fun

UrbanDisturbance 05-05-2011 02:05 PM

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.


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