Diffuser removal?
Sent my B1 x 24p to BBlades for lab service and diffuser was removed and wondering why. I'm not questioning his talents.
running on 270 Convincor w/496HO thanks |
Brett labbed my Bravo 1 years ago and did not remove the diffuser. The Max 5 is a Merc modified and labbed Maximus which does have the diffuser removed. It's my understanding that the diffuser is to help keep exhaust gases from getting into the blades so when we run through transom exhaust it only becomes a hindrance and also creates some transom lift. I'm not a prop expert but that's my take on it.
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He's tuning it for how much transom lift your boat needs. The shorter or removed diffuser lowers the transom lift, which raises the bow. Every hull type is different. Interested to see how it performs.
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All started with this and BB stated go with the B1B1 24p vs QIV-X 24p. Both are 4bld both virgin. 2002 Convincor 496HO with normal load, usually 1/2 tank gas or more runs 65, but when the stars and moon align then just over 67. Both GPS. The only difference I notice is that under about 45mph the hydromotive needs more down tabs to prevent porpoise. WOT.. it's a toss up for MPH. That said which prop would be best to rework and what would be estimated results? I usually run with about 30-40gal fuel and WOT RPM is in the range of 4700-5000 depending on the season with spring and fall producing 5K RPM. So 4700 most of the summer here in western PA
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I couldn't answer that. That's where you gotta trust someone like Brett. I've never messed with a Hydro prop.
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Originally Posted by PA.WOODCHUCK
(Post 4774239)
Sent my B1 x 24p to BBlades for lab service and diffuser was removed and wondering why. I'm not questioning his talents.
running on 270 Convincor w/496HO thanks |
could anyone measure total height so I can then know how much was cut off?
thanks |
Originally Posted by PA.WOODCHUCK
(Post 4774604)
could anyone measure total height so I can then know how much was cut off?
thanks |
6 5/8 when on bench to top...
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Why not call Brett and ask him why it was cut off?
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