Boston Whaler Outrage 23', 225 Merc Optimax, Top speed?

jonspam.TakeThisOut@earthlink.net (Jon.boston) wrote in message news:<55beeac5.0409110545.635b9932.TakeThisOut@posting.google.com>...
 > I have 23' 2000 Outrage, 225 Merc Optimax. The boat will go 29 Knots
 > @ 5000RPM. Is this about what I should expect for a speed or will a
 > different prop pitch make this higher (without suffering at the low
 > end too much).
 >
 > What effect does twin engines have for top speed?
 >
 > Thanks,
 > Jon

WOT for this motor is 5750 RPM ... top speed wise you may be able to
go down 1 or 2 pitches and go faster. You would lose low end
acceleration ... its always a trade off. You probably get better fuel
economy with the prop you have right now...

Maybe having 2 props may work for you .. one high and one low pitch
.... put on the prop that fits your needs for the day and bring the
other as a spare.

Matt<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

"Matt Lang" <web1000.DeleteThis@shaw.ca> wrote in message
news:a0e12e54.0409110958.6d3091f6@posting.google.com...
 > jonspam.DeleteThis@earthlink.net (Jon.boston) wrote in message
news:<55beeac5.0409110545.635b9932.DeleteThis@posting.google.com>...
  > > I have 23' 2000 Outrage, 225 Merc Optimax. The boat will go 29 Knots
  > > @ 5000RPM. Is this about what I should expect for a speed or will a
  > > different prop pitch make this higher (without suffering at the low
  > > end too much).
  > >
  > > What effect does twin engines have for top speed?
  > >
  > > Thanks,
  > > Jon
 >
 > WOT for this motor is 5750 RPM ... top speed wise you may be able to
 > go down 1 or 2 pitches and go faster. You would lose low end
 > acceleration ... its always a trade off.

Actually, it's just the opposite. If you drop pitch, you *gain* low end
acceleration. The only reason that you might go faster with a lower pitch
prop is that the lower pitch prop will allow the engine to turn at the
higher RPM


  >You probably get better fuel
 > economy with the prop you have right now...

Maybe. He may have a lot more prop slip with the current prop.

 >
 > Maybe having 2 props may work for you .. one high and one low pitch
 > ... put on the prop that fits your needs for the day and bring the
 > other as a spare.

You should put on the prop that allows the engine to turn at the recommended
maximum WOT operating RPM range.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

"NOYB" <NOYB.RemoveThis@NOYB.COM> wrote in message news:<SrudnWenqZhP_97cRVn-gQ.RemoveThis@comcast.com>...
 > "Matt Lang" <web1000.RemoveThis@shaw.ca> wrote in message
 > news:a0e12e54.0409110958.6d3091f6@posting.google.com...
  > > jonspam.RemoveThis@earthlink.net (Jon.boston) wrote in message
 > news:<55beeac5.0409110545.635b9932.RemoveThis@posting.google.com>...
   > > > I have 23' 2000 Outrage, 225 Merc Optimax. The boat will go 29 Knots
   > > > @ 5000RPM. Is this about what I should expect for a speed or will a
   > > > different prop pitch make this higher (without suffering at the low
   > > > end too much).
   > > >
   > > > What effect does twin engines have for top speed?
   > > >
   > > > Thanks,
   > > > Jon
  > >
  > > WOT for this motor is 5750 RPM ... top speed wise you may be able to
  > > go down 1 or 2 pitches and go faster. You would lose low end
  > > acceleration ... its always a trade off.
 >
 > Actually, it's just the opposite. If you drop pitch, you *gain* low end
 > acceleration. The only reason that you might go faster with a lower pitch
 > prop is that the lower pitch prop will allow the engine to turn at the
 > higher RPM

yeah, thats what I meant ... Good catch <!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

"NOYB" <NOYB DeleteThis @NOYB.COM> wrote in message news:<SrudnWenqZhP_97cRVn-gQ DeleteThis @comcast.com>...
 > "Matt Lang" <web1000 DeleteThis @shaw.ca> wrote in message
 > news:a0e12e54.0409110958.6d3091f6@posting.google.com...
  > > jonspam DeleteThis @earthlink.net (Jon.boston) wrote in message
 > news:<55beeac5.0409110545.635b9932 DeleteThis @posting.google.com>...
   > > > I have 23' 2000 Outrage, 225 Merc Optimax. The boat will go 29 Knots
   > > > @ 5000RPM. Is this about what I should expect for a speed or will a
   > > > different prop pitch make this higher (without suffering at the low
   > > > end too much).
   > > >
   > > > What effect does twin engines have for top speed?
   > > >
   > > > Thanks,
   > > > Jon
  > >
  > > WOT for this motor is 5750 RPM ... top speed wise you may be able to
  > > go down 1 or 2 pitches and go faster. You would lose low end
  > > acceleration ... its always a trade off.
 >
 > Actually, it's just the opposite. If you drop pitch, you *gain* low end
 > acceleration. The only reason that you might go faster with a lower pitch
 > prop is that the lower pitch prop will allow the engine to turn at the
 > higher RPM
 >
 >
  > >You probably get better fuel
  > > economy with the prop you have right now...
 >
 > Maybe. He may have a lot more prop slip with the current prop.
 >
  > >
  > > Maybe having 2 props may work for you .. one high and one low pitch
  > > ... put on the prop that fits your needs for the day and bring the
  > > other as a spare.
 >
 > You should put on the prop that allows the engine to turn at the recommended
 > maximum WOT operating RPM range.


remember too weight is a factor. typically when i prop a boat its
fairly unloaded, 1/4 tank of gas, not much gear, 1 or 2 people. i
usually try and aim a little higher then wot. all modern engines have
max rpm protection and will usually set a code if this is achieved
simply as a record.

other things to think about. its a 4 year old optimax. how many hours?
ive seen quite a few cracked reed problems with opti's, this will rob
power. the opti's are a very sophisticated engine with quite the
complex fuel delivery system.

my adice, take it too your local professional merc dealer.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

The propeller on my boat has a 13" pitch.. When I use the calculator
the speed agrees with what I'm seeing.

My question now is: What prop pitches do people use on a 23Ft outrage
with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
advice on what is put on as a stnadard would be great.

I bought this boat used, 55 hours on the engine, and I can't beleve
they would sell it with a 13" pitch prop... The list of props for
this engine don't seem to even go down to 13"!

Any clues would be appreciated...

Thanks,
Jon
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

On 12 Sep 2004 20:04:08 -0700, jonspam RemoveThis @earthlink.net (Jon.boston)
wrote:
 >My question now is: What prop pitches do people use on a 23Ft outrage
 >with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
 >advice on what is put on as a stnadard would be great.

=============================================

For what it's worth, I have a 17" pitch prop on my 24 ft I/O, 260 hp
Mercruiser. I'd think you could turn at least that much, maybe more.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

The propeller on my boat has a 13" pitch.. When I use the calculator
the speed agrees with what I'm seeing.

My question now is: What prop pitches do people use on a 23Ft outrage
with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
advice on what is put on as a stnadard would be great.

I bought this boat used, 55 hours on the engine, and I can't beleve
they would sell it with a 13" pitch prop... The list of props for
this engine don't seem to even go down to 13"!

Any clues would be appreciated...

Thanks,
Jon
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

Sounds like the previous owner frequently pulled skiers or wakeboards and needed
the "hole shot". Or maybe he didn't know any better when he got that deal on a
new prop!

Dan


Jon.boston wrote:
 > The propeller on my boat has a 13" pitch.. When I use the calculator
 > the speed agrees with what I'm seeing.
 >
 > My question now is: What prop pitches do people use on a 23Ft outrage
 > with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
 > advice on what is put on as a stnadard would be great.
 >
 > I bought this boat used, 55 hours on the engine, and I can't beleve
 > they would sell it with a 13" pitch prop... The list of props for
 > this engine don't seem to even go down to 13"!
 >
 > Any clues would be appreciated...
 >
 > Thanks,
 > Jon<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

34 MPH sounds awfully slow for the top end with that configuration. Just in
case you are new to boating...

Are you using a GPS or the boat's speedo?

Have you trimmed the motor up a bit (in fairly calm water) to increase speed and
RPMs?

Dan


Jon.boston wrote:

 > The propeller on my boat has a 13" pitch.. When I use the calculator
 > the speed agrees with what I'm seeing.
 >
 > My question now is: What prop pitches do people use on a 23Ft outrage
 > with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
 > advice on what is put on as a stnadard would be great.
 >
 > I bought this boat used, 55 hours on the engine, and I can't beleve
 > they would sell it with a 13" pitch prop... The list of props for
 > this engine don't seem to even go down to 13"!
 >
 > Any clues would be appreciated...
 >
 > Thanks,
 > Jon<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

Dan Krueger wrote:
 > Sounds like the previous owner frequently pulled skiers or wakeboards and needed
 > the "hole shot". Or maybe he didn't know any better when he got that deal on a
 > new prop!
 >
 > Dan
 >
 >
 > Jon.boston wrote:
  >> The propeller on my boat has a 13" pitch.. When I use the calculator
  >> the speed agrees with what I'm seeing.
  >>
  >> My question now is: What prop pitches do people use on a 23Ft outrage
  >> with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
  >> advice on what is put on as a stnadard would be great.
  >>
  >> I bought this boat used, 55 hours on the engine, and I can't beleve
  >> they would sell it with a 13" pitch prop... The list of props for
  >> this engine don't seem to even go down to 13"!
  >>
  >> Any clues would be appreciated...
  >>
  >> Thanks,
  >> Jon
 >

I believe the pitch on my 225 Yamaha on my Parker 25 is 17"...I'll have
to check it out...but I believe that is the right number. Seems to me a
19" or even 21" pitch would be suitable for that Whaler and a 225 engine.

--
Not dead, in jail, or a slave? Thank a liberal!
And don't forget to pay your taxes so the rich don't have to!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

jonspam RemoveThis @earthlink.net (Jon.boston) wrote in message news:<55beeac5.0409130321.12a75e4a RemoveThis @posting.google.com>...
 > The propeller on my boat has a 13" pitch.. When I use the calculator
 > the speed agrees with what I'm seeing.
 >
 > My question now is: What prop pitches do people use on a 23Ft outrage
 > with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
 > advice on what is put on as a stnadard would be great.
 >
 > I bought this boat used, 55 hours on the engine, and I can't beleve
 > they would sell it with a 13" pitch prop... The list of props for
 > this engine don't seem to even go down to 13"!
 >
 > Any clues would be appreciated...
 >
 > Thanks,
 > Jon

a 17" should do the job. a 13" would definately cause your engine to
go beyond wide open throttle max rpm, which it isnt. i highly doubt
its 13" pitch and rather it is 13" diameter which is fairly standard
for a v6 gearbox. if it is a standard merc prop it will be cast into
the hub. the steps you should take to determine the correct prop.....
first correctly determine your current prop pitch (its not 13 if you
only get 5k rpm)
if infact your max rpm should be closer to 5.5k rpm select a prop at
least 3 inches less in pitch then the current prop if you only get 5k
rpm.
make sure to choose the same material the prop is currently made from.
aluminium propellors are more flexible then ss. a 15" ss prop is
fairly equivalent to a 17" aluminium prop.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

Dan Krueger <dankrueger.TakeThisOut@xxxmindspring.com> wrote in message news:<ceq1d.461$ax4.174@newsread3.news.pas.earthlink.net>...
 > Sounds like the previous owner frequently pulled skiers or wakeboards and needed
 > the "hole shot". Or maybe he didn't know any better when he got that deal on a
 > new prop!


Or the prev owner kept his multihundred dollar SS prop and slapped on
the cheapest prop he could find before the sale

Matt










 > Jon.boston wrote:
  > > The propeller on my boat has a 13" pitch.. When I use the calculator
  > > the speed agrees with what I'm seeing.
  > >
  > > My question now is: What prop pitches do people use on a 23Ft outrage
  > > with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
  > > advice on what is put on as a stnadard would be great.
  > >
  > > I bought this boat used, 55 hours on the engine, and I can't beleve
  > > they would sell it with a 13" pitch prop... The list of props for
  > > this engine don't seem to even go down to 13"!
  > >
  > > Any clues would be appreciated...
  > >
  > > Thanks,
  > > Jon<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed? 

Here is everything you wanted to know about props.
<a style='text-decoration: underline;' href="http://www.boatfix.com/how/props.html" target="_blank">http://www.boatfix.com/how/props.html</a>

--
Bill
Chesapeake, Va


"Matt Lang" <web1000.TakeThisOut@shaw.ca> wrote in message
news:a0e12e54.0409141412.4ea335d1@posting.google.com...
 > Dan Krueger <dankrueger.TakeThisOut@xxxmindspring.com> wrote in message
news:<ceq1d.461$ax4.174@newsread3.news.pas.earthlink.net>...
  > > Sounds like the previous owner frequently pulled skiers or wakeboards
and needed
  > > the "hole shot". Or maybe he didn't know any better when he got that
deal on a
  > > new prop!
 >
 >
 > Or the prev owner kept his multihundred dollar SS prop and slapped on
 > the cheapest prop he could find before the sale
 >
 > Matt
 >
 >
 >
 >
 >
 >
 >
 >
 >
 >
  > > Jon.boston wrote:
   > > > The propeller on my boat has a 13" pitch.. When I use the calculator
   > > > the speed agrees with what I'm seeing.
   > > >
   > > > My question now is: What prop pitches do people use on a 23Ft outrage
   > > > with a 225 Merc? I've seen notes mentioning 17" and 19" pitch.. Any
   > > > advice on what is put on as a stnadard would be great.
   > > >
   > > > I bought this boat used, 55 hours on the engine, and I can't beleve
   > > > they would sell it with a 13" pitch prop... The list of props for
   > > > this engine don't seem to even go down to 13"!
   > > >
   > > > Any clues would be appreciated...
   > > >
   > > > Thanks,
   > > > Jon<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Boston Whaler Outrage 23', 225 Merc Optimax, Top speed?