Four or Five Blade
04-06-2009 | 04:30 PM
#11
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From: Woodinville, WA
04-06-2009 | 04:33 PM
#12
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From: Woodinville, WA
On my boat, I prefer bravos over the 5 blades. I tried a stock 30 P5X and it was decent, but my old set of mangled 30 bravos are a few mph faster and I like the way they handle better.
I just had my old 30s worked on (added a bit on length etc). I know a few folks with daytonas that have had good luck having the bravos worked over so I am going to be trying that for better results. Check out the attached pics.
I have heard that there are some slightly cut down merc maximus props that will work well. IIRC, Preston Wooley of Horizon motorsports recommended them. I would be curious to see how the Hering 5 blades work as well. I have heard that they are great props. Not sure how they would work for our application though.
BTW, I am running 496HOs with 1.35 XRs.
I just had my old 30s worked on (added a bit on length etc). I know a few folks with daytonas that have had good luck having the bravos worked over so I am going to be trying that for better results. Check out the attached pics.
I have heard that there are some slightly cut down merc maximus props that will work well. IIRC, Preston Wooley of Horizon motorsports recommended them. I would be curious to see how the Hering 5 blades work as well. I have heard that they are great props. Not sure how they would work for our application though.
BTW, I am running 496HOs with 1.35 XRs.
I can't wait to see how the worked 32s run....
04-06-2009 | 07:27 PM
#13
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From: Buffalo, NY
I do like the way the boat handles and gets on plane with the Bravo's. It seems to get on plane to easy to me. Most articles I read discuss the balancing act of best prop for speed versus everyday cruising. Right now I can get the boat on plane fairly easy with one motor only. So I would expect to get more speed with prop change. Also was told when boat was originally tested with labbed bravo's it threw blades twice, so they got away from labbed prop's. Anyone have similar experienece?
04-08-2009 | 02:23 PM
#14
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From: Rochester, NY
I do like the way the boat handles and gets on plane with the Bravo's. It seems to get on plane to easy to me. Most articles I read discuss the balancing act of best prop for speed versus everyday cruising. Right now I can get the boat on plane fairly easy with one motor only. So I would expect to get more speed with prop change. Also was told when boat was originally tested with labbed bravo's it threw blades twice, so they got away from labbed prop's. Anyone have similar experienece?
04-08-2009 | 09:22 PM
#15
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I have a 28' and I run 5 blade maximus'. They are 32's cut down to a 15'' diameter with the diffuser ring cut down also. I have no problems getting on plane with any size load unlike the problems I had with 4 blades. The boat is faster in the top end with 4 blades but I would rather scrub a couple m.p.h. off the top end and have better mid range and planing abilities.
04-10-2009 | 04:45 PM
#18
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From: Woodinville, WA
29.5 actualy pitch as measured
5150 RPM
1.35 Gear Ratio
94MPH Speed Over Ground (may be slightly off from actual speed over water)
I am seeing a theoretical 12% and that is the worst case scenario for my setup currently number wise.
http://www.mercuryracing.com/propell...calculator.php
I think a lot of it depends on the lab job.
Last edited by CheckedOut; 04-10-2009 at 05:03 PM.
04-10-2009 | 08:16 PM
#19
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From: Edmond, OK.
Hope it's not to late to get in on this thread
I had a 500EFI last summer in a 25 Daytona.
It's on the floor now, still for sale...
http://www.offshoreonly.com/classifi...o26451-en.html
I just had a N.A. 572 installed..XR drive., 2" shorty.
It looks like a lot of people are going with the 5 blade. Should I stick with the four blade, maybe a 30?? Or the 5 blade??
Any suggestions would be much appreciated.
Thanks,
It's on the floor now, still for sale...
http://www.offshoreonly.com/classifi...o26451-en.html
I just had a N.A. 572 installed..XR drive., 2" shorty.
It looks like a lot of people are going with the 5 blade. Should I stick with the four blade, maybe a 30?? Or the 5 blade??
Any suggestions would be much appreciated.
Thanks,
Last edited by jason6116; 04-11-2009 at 07:24 AM.
04-10-2009 | 10:51 PM
#20
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Joined: May 2007
Posts: 231
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From: Woodinville, WA
I had a 500EFI last summer in a 25 Daytona.
It's on the floor now, still for sale...
http://www.offshoreonly.com/classifi...o26451-en.html
I just had a N.A. 572 installed..XR drive., 2" shorty.
It looks like a lot of people are going with the 5 blade. Should I stick with the four blade, maybe a 30?? Or the 5 blade??
Any suggestions would be much appreciated.
Copy & Paste this link
C:\Documents and Settings\jason.dickinson\Desktop\MOTOR\DSCN0102[1].JPG
Thanks,
It's on the floor now, still for sale...
http://www.offshoreonly.com/classifi...o26451-en.html
I just had a N.A. 572 installed..XR drive., 2" shorty.
It looks like a lot of people are going with the 5 blade. Should I stick with the four blade, maybe a 30?? Or the 5 blade??
Any suggestions would be much appreciated.
Copy & Paste this link
C:\Documents and Settings\jason.dickinson\Desktop\MOTOR\DSCN0102[1].JPG
Thanks,
The benefits that I see for 4 blades in general are as follows:
Less Drive wear
Better top end speed
Cheaper/Easy to find - If you run in places where there is a lot of drift this can be a big deal
BTW, The link you posted points to your local computer and doesn't work.
Last edited by CheckedOut; 04-10-2009 at 11:08 PM.
