"Short Wave Sportfishing" wrote in message
...
Bob Smith wrote:
"Josh Assing" wrote in message
...
So, a buddy and I were talking -- he said I wasted my money on trim
tabs. I
said I did not.

The conversation revolved around the use of whale tails (foils on the
cavitation plate).

I said that they could help; but would add stress to the outdrive, and
if
something that simple really helped, manufactures would make their
cavitation
plates larger.

What's the general opinion on them?

Our 19 ft CC with 125hp I/O (no power trim) has a Stingray hydrofoil, and
without it, the prop cavitates very easily in a high power turn. A bit
lower planing speed and less bow rise with it, but the reason I keep it
on is mainly cavitation prevention.

I would suspect that the angle of your drive in the turn and prop
selection has more to do with the cavitation problem than the plate.



Angle is not adjustable, since our outdrive (VP 270) needs to be locked in
the "down" position when operating. All three of our props (14x19SS, 14x17
aluminum, 15x15 aluminum) exhibit the same cavitiation upon cornering w/o
the fin. I'm not pro-fin or anti-fin, I just know that this one needs to
stay on our boat.

Bob Smith wrote:
"Short Wave Sportfishing" wrote in message
...
Bob Smith wrote:
"Josh Assing" wrote in message
...
So, a buddy and I were talking -- he said I wasted my money on trim
tabs. I
said I did not.

The conversation revolved around the use of whale tails (foils on the
cavitation plate).

I said that they could help; but would add stress to the outdrive, and
if
something that simple really helped, manufactures would make their
cavitation
plates larger.

What's the general opinion on them?
Our 19 ft CC with 125hp I/O (no power trim) has a Stingray hydrofoil, and
without it, the prop cavitates very easily in a high power turn. A bit
lower planing speed and less bow rise with it, but the reason I keep it
on is mainly cavitation prevention.
I would suspect that the angle of your drive in the turn and prop
selection has more to do with the cavitation problem than the plate.

Angle is not adjustable, since our outdrive (VP 270) needs to be locked in
the "down" position when operating. All three of our props (14x19SS, 14x17
aluminum, 15x15 aluminum) exhibit the same cavitiation upon cornering w/o
the fin. I'm not pro-fin or anti-fin, I just know that this one needs to
stay on our boat.

Interesting.

That's the great thing about boats - every single one of them is
different in some way.

I'm a small boat guy and I get to play and test a lot of small boats -
in the 16 to 22 foot range - mostly fishing boats on pre-delivery runups
for some local dealers.

You can test two identical boats except for color and each of them will
handle differently by comparison. Some will turn a little tighter, plane
a little faster, higher top end, etc.

It's definetly a curiosity.

"Short Wave Sportfishing" wrote in message
m...
Bob Smith wrote:
"Short Wave Sportfishing" wrote in message
...
Bob Smith wrote:
"Josh Assing" wrote in message
...
So, a buddy and I were talking -- he said I wasted my money on trim
tabs. I
said I did not.

The conversation revolved around the use of whale tails (foils on the
cavitation plate).

I said that they could help; but would add stress to the outdrive, and
if
something that simple really helped, manufactures would make their
cavitation
plates larger.

What's the general opinion on them?
Our 19 ft CC with 125hp I/O (no power trim) has a Stingray hydrofoil,
and without it, the prop cavitates very easily in a high power turn. A
bit lower planing speed and less bow rise with it, but the reason I
keep it on is mainly cavitation prevention.
I would suspect that the angle of your drive in the turn and prop
selection has more to do with the cavitation problem than the plate.

Angle is not adjustable, since our outdrive (VP 270) needs to be locked
in the "down" position when operating. All three of our props (14x19SS,
14x17 aluminum, 15x15 aluminum) exhibit the same cavitiation upon
cornering w/o the fin. I'm not pro-fin or anti-fin, I just know that this
one needs to stay on our boat.

Interesting.

That's the great thing about boats - every single one of them is different
in some way.

I'm a small boat guy and I get to play and test a lot of small boats - in
the 16 to 22 foot range - mostly fishing boats on pre-delivery runups for
some local dealers.

You can test two identical boats except for color and each of them will
handle differently by comparison. Some will turn a little tighter, plane a
little faster, higher top end, etc.

It's definetly a curiosity.

Isn't a good deal of that weight variation in fiberglass hulls?

D.Duck wrote:

Isn't a good deal of that weight variation in fiberglass hulls?

Funny you should mention that.

I went/am going through this with Ranger right now.

Apparently weights can vary a lot.

"Short Wave Sportfishing" wrote in message
m...
D.Duck wrote:

Isn't a good deal of that weight variation in fiberglass hulls?

Funny you should mention that.

I went/am going through this with Ranger right now.

Apparently weights can vary a lot.

If I recall correctly as near as you can figure your hull is something like
800 pounds over Ranger's advertised nominal.

Still haven't figured that out?

D.Duck wrote:
"Short Wave Sportfishing" wrote in message
m...
D.Duck wrote:

Isn't a good deal of that weight variation in fiberglass hulls?
Funny you should mention that.

I went/am going through this with Ranger right now.

Apparently weights can vary a lot.

If I recall correctly as near as you can figure your hull is something like
800 pounds over Ranger's advertised nominal.

Still haven't figured that out?

Nope.

"Short Wave Sportfishing" wrote in message
...
D.Duck wrote:
"Short Wave Sportfishing" wrote in message
m...
D.Duck wrote:

Isn't a good deal of that weight variation in fiberglass hulls?
Funny you should mention that.

I went/am going through this with Ranger right now.

Apparently weights can vary a lot.

If I recall correctly as near as you can figure your hull is something
like 800 pounds over Ranger's advertised nominal.

Still haven't figured that out?

Nope.

My buddy's offshore raceboat a few years ago, came in 600# overweight.
Builder told him . . . Tough. You own it. Not competitoive, but you own
it.