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07-28-2018, 07:21 PM #436
Which Hydromotive did you try?
'95 STV "The Blue Goose"
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07-28-2018, 07:31 PM #437
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07-28-2018, 08:03 PM #438
Dave Dewald does a lot them and I believe a few Herring props also.
From what I have watched and in talking with Dave most or all of the boats run thru-hub 5 blades.
Every boat will be different and require some time to dial things in.
On Jim’s 308 Skater pitch for pitch the 32P Dewald’s thru hubs were faster than the merc CNC’s by 2mph.
However the Merc’s got on plane better and had a better cruise speed but as speed went up the Dewald’s won out.
Double Rigged
308 Skater w/400r’s
Over-Kill
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07-28-2018, 08:34 PM #439Supporting Member
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Remember that this segment is a very small percentage of their operation. My guess is that like everything else-volume goes up, price will come down. There will also be all of the aftermarket guys doing the copy and chase deal.
The Hydromotive that I have is a 32 Quad 4 15", the Hering is a 32 15.25 with very small vent holes in it and a full 6" long barrel on it-neither of them have any flare. Like I said previously, my STV wouldn't turn the hering past 2K but with three of us in the boat the 300R jumped on plane like it was a pontoon wheel "I was really surprised when I experienced both of the results"-I actually didn't think that my STV would get that loaded by anything.
I am going to run that 5 blade cnc on my stv and see how it does compared to the 4 blade herring that like to run the most on it.
JoeLast edited by JPEROG; 07-28-2018 at 08:40 PM.
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07-28-2018, 09:34 PM #440
Good deal, sounds like you have a plan. I’ve been weighing the idea of repowering and it’s good to know I’ll need to budget a few thousand extra dollars for props if I decide to go that route. Looks like the days of throwing an $800 prop on and running strong may be history, at least until the volumes come up and the aftermarket (and Merc) catch up.
Mark
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08-09-2018, 12:25 PM #441Guest
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Have to say that all our propellers are custom built; This propeller was not built for this application and obviously not a good example.
We could have 10 plus propellers lined up that have the same pitch but there are many variables that need to be addressed to get the desired result; We don't just sell a single propeller in any given pitch.
We are looking forward to addressing this application while still supporting the past by delivering what we have for the last 49 years here at Spinelli Bros.
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08-09-2018, 01:00 PM #442
Nothing negative on the Spinelli prop. Not a single one of the standard props I use on the 300xs would hook up on the 300R. Too much exhaust over the blades.
" IT'S NOT HOW FAST YOU ARE, IT'S HOW COOL YOU LOOK!!! "
Check out my new website. liberatorpowerboats.com
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Things owned. NOTHING!!
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08-09-2018, 03:13 PM #443
In talking to others it appears Mercury Racing confirms this case really needs a 15" or larger prop. 15.5" seems to be their recommendation. Blade count, geometry and other factors are very boat specific.
Mark
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08-09-2018, 03:23 PM #4445000 RPM
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mjw930 liked this post
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08-09-2018, 03:29 PM #445
LMFAO!! but
This is a huge deal that most people miss. 91 or 93 pump gas and go. No sweating the ethanol, additives, oils, etc or worrying about it burning down because the station had piss water fuel in their premium tank. Just pull up to the pump and fill that bitch up. I know MULTIPLE people that have burned down high perf motors that need the 93 octane. It's not uncommon at all.
With props, as these things proliferate, expect to see bigger stuff get more popular. Personally I'd swing a CNC Cleaver in a 34 pitch with the motor then find something else to run day to day.> Stainless steel Merc cowling plates - $110 shipped TYD - LINK <
1979 16' Action Marine/2.5L Merc S3000 - Metalflake Maniac
1984 18' Contender Tunnel/2.4 Merc Bridgeport
"Where does the love of God go, when the waves turn the minutes to hours?"
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08-09-2018, 04:02 PM #446
Personally I wouldn't even consider putting a $5000 prop on a small High Performance boat unless I was competing with it. In many cases that 10% - 20% of the entire boat's value.
I don't think it's going take a long time for both Mercury and the Aftermarket to start addressing this and coming out with 15"+ props.Mark
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08-09-2018, 04:17 PM #447Screaming And Flying!
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These motors and props put you in the "if you have to ask, you can't afford it" category.
83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
Rebuild thread:
http://www.screamandfly.com/showthre...-it&highlight=
http://www.screamandfly.com/showthre...cs.&highlight=
Videos
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08-09-2018, 07:06 PM #448
I'll be trying out a 34 Performer 4 blade prop soon. It's 15 1/8" - 15.25" and the blades are huge. If it works out, that will bring the prop cost to under $1,000.
" IT'S NOT HOW FAST YOU ARE, IT'S HOW COOL YOU LOOK!!! "
Check out my new website. liberatorpowerboats.com
Boat Delivery available
Things owned. NOTHING!!
Ain't got no toyz, Ain't got no money! I is jus a poor Florida boy!
Visit My Liberator Boats Website
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engineermike, Kapn.K thanked for this postmjw930 liked this post
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08-09-2018, 09:05 PM #449
If I can secure you a P5X loaner would you try it?
Azure AZ259, 8.1
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08-09-2018, 09:44 PM #4506000 RPM
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