Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop; I've narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh

Prop thoughts (Narrowed down my choices) Revolution4 vensuraor enertia
 

Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked
up 150 RPM from the slight change in blade profile. I'd say your motor
is not performing up to snuff, or possibly the Gear ratio in the
outdrive is wrong... Plenty of C.I. to run your original prop at 4500+,
unless the props a dog and not designed well. (probable).
JR

Josh Assing wrote:
Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop; I've narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh



--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked
up 150 RPM from the slight change in blade profile. I'd say your motor
is not performing up to snuff, or possibly the Gear ratio in the
outdrive is wrong... Plenty of C.I. to run your original prop at 4500+,
unless the props a dog and not designed well. (probable).

The bluewater is known for being a pig out of the hole, and incredably stern
heavy.

The engine is running as good as it's going to w/o a rebuild.
No blow by, even compression. New plugs, wires, cap/rotor. Timing set. New
coil (really helped a lot) and a professional carb rebuild.

The original prop was a 17 pitch; the PO got a "deal" on this 3 blade SS prop
(19 pitch) on the hope that he would get a higher top end.

Thanks
-josh

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

Has it got anti-fouling on it?
If so is it self-polishing? (or what you call it in your country?)
Any sign of osmosis?
Any barnicles?
Any overweight women or fishermen?
Any excess luggage / equipment?
Excess tilt up or down?
If all that is under control then try pitch down before you kill your
chequebook. (Aust spelling!)




"Josh Assing" wrote in message
...
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked
up 150 RPM from the slight change in blade profile. I'd say your motor
is not performing up to snuff, or possibly the Gear ratio in the
outdrive is wrong... Plenty of C.I. to run your original prop at 4500+,
unless the props a dog and not designed well. (probable).

The bluewater is known for being a pig out of the hole, and incredably
stern
heavy.

The engine is running as good as it's going to w/o a rebuild.
No blow by, even compression. New plugs, wires, cap/rotor. Timing set.
New
coil (really helped a lot) and a professional carb rebuild.

The original prop was a 17 pitch; the PO got a "deal" on this 3 blade SS
prop
(19 pitch) on the hope that he would get a higher top end.

Thanks
-josh

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

Has it got anti-fouling on it?

"it" being the boat, drive, or prop? Yes to the 1st 2, no to the last.

If so is it self-polishing? (or what you call it in your country?)

Dunno what that means.

Any sign of osmosis?
The boat has absorbed some water, but nothing to be too concerned about. If you
mean electrolsis - no signs of that.

Any barnicles?
not a one.

Any overweight women or fishermen?
Doesn't matter, seems to perform the same with just me or 2 other people. What
defines "overweigth" - I'm well under the rated load for the boat.

Any excess luggage / equipment?
if by excess you mean weight, no. if by not-needed, probably... ;-)

Excess tilt up or down?
no

If all that is under control then try pitch down before you kill your
chequebook. (Aust spelling!)


Well; I'm at 19; thinking about a 17 -- either way; it costs to reprop... I'm
so close teh correct RPM for WOT -- that I want to try an 18, but pretty sure
I'd just end up going to a 17 anyway.

Prop thoughts (Narrowed down my choices) Revolution4 vensuraor enertia
 

JR North wrote:
Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked
up 150 RPM from the slight change in blade profile. I'd say your motor
is not performing up to snuff, or possibly the Gear ratio in the
outdrive is wrong... Plenty of C.I. to run your original prop at 4500+,
unless the props a dog and not designed well. (probable).
JR

Josh Assing wrote:
Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch,
4100 rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop;
I've narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to
get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh



I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90
HP motor. IMHO They work great and are relatively inexpensive.


Liberally Yours,

1.20.09

Fredo

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

Anti-fouling for fast craft (racing yachts & semi-planing or planing hulls)
is available in "self-polishing" or ablutive type.
Basically this means that as the effectiveness of the application reduces,
it gets worn off (released?) until if you keep using your boat there is none
left at all on your hull. This also keeps the surface polished & very
smooth. After several years of experience you will know how heavy to apply
it to last the season & therefore reduce the ammount you need to remove
prior to next years application.
If you aren't using this type, then it WILL drag your speed down
drastically.
Look up "Interlux ablutive" in google.



"Fredo" wrote in message
...
JR North wrote:
Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600.
6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150
RPM from the slight change in blade profile. I'd say your motor is not
performing up to snuff, or possibly the Gear ratio in the outdrive is
wrong... Plenty of C.I. to run your original prop at 4500+, unless the
props a dog and not designed well. (probable).
JR

Josh Assing wrote:
Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100
rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop; I've
narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to
get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh



I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP
motor. IMHO They work great and are relatively inexpensive.


Liberally Yours,

1.20.09

Fredo

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

Or even look up "Interlux ablative" !!! ooops!



"BruceM" wrote in message
...
Anti-fouling for fast craft (racing yachts & semi-planing or planing
hulls) is available in "self-polishing" or ablutive type.
Basically this means that as the effectiveness of the application reduces,
it gets worn off (released?) until if you keep using your boat there is
none left at all on your hull. This also keeps the surface polished & very
smooth. After several years of experience you will know how heavy to apply
it to last the season & therefore reduce the ammount you need to remove
prior to next years application.
If you aren't using this type, then it WILL drag your speed down
drastically.
Look up "Interlux ablutive" in google.



"Fredo" wrote in message
...
JR North wrote:
Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked
up 150 RPM from the slight change in blade profile. I'd say your motor
is not performing up to snuff, or possibly the Gear ratio in the
outdrive is wrong... Plenty of C.I. to run your original prop at 4500+,
unless the props a dog and not designed well. (probable).
JR

Josh Assing wrote:
Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100
rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop; I've
narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to
get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh



I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP
motor. IMHO They work great and are relatively inexpensive.


Liberally Yours,

1.20.09

Fredo

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

On Sun, 22 Apr 2007 10:04:11 +0930, "BruceM" wrote:

Anti-fouling for fast craft (racing yachts & semi-planing or planing hulls)
is available in "self-polishing" or ablutive type.
Basically this means that as the effectiveness of the application reduces,
it gets worn off (released?) until if you keep using your boat there is none
left at all on your hull. This also keeps the surface polished & very
smooth. After several years of experience you will know how heavy to apply
it to last the season & therefore reduce the ammount you need to remove
prior to next years application.
If you aren't using this type, then it WILL drag your speed down
drastically.
Look up "Interlux ablutive" in google.

Ablative -- yes; that's what I'm using.
"sluffing" is how we used to refer to it.





"Fredo" wrote in message
.. .
JR North wrote:
Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600.
6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150
RPM from the slight change in blade profile. I'd say your motor is not
performing up to snuff, or possibly the Gear ratio in the outdrive is
wrong... Plenty of C.I. to run your original prop at 4500+, unless the
props a dog and not designed well. (probable).
JR

Josh Assing wrote:
Thanks to all -- who helped with my initial question.

(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100
rpm
(should be around 4500)

After poking around mercury's website, and talking to a prop shop; I've
narrowed
down my choices to these:

Revolution4, 4 blade 17 pitch
Vensura, 4 blade 17 pitch
Enertia, 3 blade 17 pitch

I'm leaning towards the revolution4 -- but it is pricey; so I want to
get a bit
of real-world, non-salesman based opinions on it.

Thanks
-josh



I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP
motor. IMHO They work great and are relatively inexpensive.


Liberally Yours,

1.20.09

Fredo

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90
HP motor. IMHO They work great and are relatively inexpensive.

There's a lot more than just HP that relates to the speed. I have a 19pitch on
my 18' boat with a v6 and it is perfect for the boat --that same prop isn't so
good on the 22'....

I'm leaning towards a 4 blade based on some reading & information I gleemed from
"those in the business" (but not salesmen)

Thanks
-j

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

On Sun, 22 Apr 2007 14:41:03 -0700, Josh Assing
wrote:


I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90
HP motor. IMHO They work great and are relatively inexpensive.

There's a lot more than just HP that relates to the speed. I have a 19pitch on
my 18' boat with a v6 and it is perfect for the boat --that same prop isn't so
good on the 22'....

I'm leaning towards a 4 blade based on some reading & information I gleemed from
"those in the business" (but not salesmen)

Thanks

I hae a four blade on my ETEC - I would never go back to three blade
props.

Prop thoughts (Narrowed down my choices) Revolution4 vensura or enertia
 

The whole subject of this thread is about loads on engines with too big a
pitch.
If you don't know the consequeces of that then I suggest going to a
"propellor selection" website or listening to your reputable marine
supplier.
A boat engine endures much much more stress than an automobile engine that
goes up & down hills.
Load on a boat engine is continuous for long periods of time.
Most marine shops will tell you to find the propellor that allows desired
WOT revs & then still drop one more size.
Depending on your gearing, the load remains constant right thru the rev
range.
eg, at 20% throttle you have 90% load.
60% throttle you still have 90% load
So you can see it appears you have 105% load on yours & your motor WILL die
prematurely.
You are not one size below.
You are not equal.
You are one size over!!!
Get it?
If you don't listen ,
then be prepared for both a motor PLUS a downsize prop!!! (not to mention
excess fuel you're chewing thru)



"Short Wave Sportfishing" wrote in message
...
On Sun, 22 Apr 2007 14:41:03 -0700, Josh Assing
wrote:


I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90
HP motor. IMHO They work great and are relatively inexpensive.

There's a lot more than just HP that relates to the speed. I have a
19pitch on
my 18' boat with a v6 and it is perfect for the boat --that same prop
isn't so
good on the 22'....

I'm leaning towards a 4 blade based on some reading & information I
gleemed from
"those in the business" (but not salesmen)

Thanks

I hae a four blade on my ETEC - I would never go back to three blade
props.

Prop thoughts (Narrowed down my choices) Revolution4 vensuraor enertia
 

BruceM wrote:
The whole subject of this thread is about loads on engines with too big a
pitch.
If you don't know the consequeces of that then I suggest going to a
"propellor selection" website or listening to your reputable marine
supplier.
A boat engine endures much much more stress than an automobile engine that
goes up & down hills.
Load on a boat engine is continuous for long periods of time.
Most marine shops will tell you to find the propellor that allows desired
WOT revs & then still drop one more size.
Depending on your gearing, the load remains constant right thru the rev
range.
eg, at 20% throttle you have 90% load.
60% throttle you still have 90% load
So you can see it appears you have 105% load on yours & your motor WILL die
prematurely.
You are not one size below.
You are not equal.
You are one size over!!!
Get it?
If you don't listen ,
then be prepared for both a motor PLUS a downsize prop!!! (not to mention
excess fuel you're chewing thru)



"Short Wave Sportfishing" wrote in message
...
On Sun, 22 Apr 2007 14:41:03 -0700, Josh Assing
wrote:

I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90
HP motor. IMHO They work great and are relatively inexpensive.
There's a lot more than just HP that relates to the speed. I have a
19pitch on
my 18' boat with a v6 and it is perfect for the boat --that same prop
isn't so
good on the 22'....

I'm leaning towards a 4 blade based on some reading & information I
gleemed from
"those in the business" (but not salesmen)

Thanks
I hae a four blade on my ETEC - I would never go back to three blade
props.


IMHO I was always told you should prop your motor for WOT RPM and
never to change the speed of the boat!
IMHO If that is a problem you should get a bigger motor.


Liberally Yours,

1.20.09

Fredo