26 Rev 4 Prop test
05-20-2007, 08:45 AM
#1
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26 Rev 4 Prop test
thought I ould share some results going on in the prop talk forum...
so not the best conditions to test, wind was huffing 15-20 NE on the Gulf and air temp about 86-87 so accurate speed runs will have to wait but...
1st off the boat came on plane way quicker than my labbed B1 - probably due to the cup. The nose did not do the moon shot it usually does coming on plane. I'm puzzled that the people that labbed this prop took all cup out of the B1. I have never seen that.
Did not seem to "muscle" the boat around as much most likely to less diameter.
Just about completely got rid of the tendency of this boat to porpoise. Did not have to run the tab I ususally do, even in the 3' chop I was in. In fact I had a much greater range of drive trim without the bounce.
Looks like my mid-range cruise is about 5mph faster at similar rpm.
My only concern is the top end might be there but bblades says that itshould be faster than the B1.
I wouild be interested that after labbing the rev 4 what I would gain vs. lose based on these intial results.
so not the best conditions to test, wind was huffing 15-20 NE on the Gulf and air temp about 86-87 so accurate speed runs will have to wait but...
1st off the boat came on plane way quicker than my labbed B1 - probably due to the cup. The nose did not do the moon shot it usually does coming on plane. I'm puzzled that the people that labbed this prop took all cup out of the B1. I have never seen that.
Did not seem to "muscle" the boat around as much most likely to less diameter.
Just about completely got rid of the tendency of this boat to porpoise. Did not have to run the tab I ususally do, even in the 3' chop I was in. In fact I had a much greater range of drive trim without the bounce.
Looks like my mid-range cruise is about 5mph faster at similar rpm.
My only concern is the top end might be there but bblades says that itshould be faster than the B1.
I wouild be interested that after labbing the rev 4 what I would gain vs. lose based on these intial results.
05-24-2007, 03:20 PM
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I am glad to hear you like the results so far, please keep us posted. I have been considering a 4 blade, I haven't heard a lot about performance increases. I currently have a 26 with a 502 MPI and Bravo 1 that rolls a pretty consistant 67 mph in light chop, but does tend to porpoise and I think could be better out of the hole. Thanks for the info. Keep us posted.
06-13-2007, 09:32 AM
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I was really hoping to hear what the diff was before i pull my QIV X off for a rev 4.
06-13-2007, 05:54 PM
#8
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Me 2!
It is looking like I am going to be sending out my new in box 26 B1's to test out some 26 labbed B1's.
So far I think a QIV-X with the QIV's extended diffuser in a labbed 26 will be the best prop for me but going to keep on testing until I know for sure.
Rev 4 still has my interest....
It is looking like I am going to be sending out my new in box 26 B1's to test out some 26 labbed B1's.
So far I think a QIV-X with the QIV's extended diffuser in a labbed 26 will be the best prop for me but going to keep on testing until I know for sure.
Rev 4 still has my interest....
