My 1985 Mercury 75
 

On 5/23/2016 9:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?


Won't the trim tab only give me neutral steering at one specific tilt
and speed?

My 1985 Mercury 75
 

On Mon, 23 May 2016 08:33:24 -0500, "Ryan P." wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Here's a link to some info you've probably already looked at.

http://www.thehulltruth.com/boating-...uld-cause.html

--

Ban Krausescheiße-spouting narcissists...not guns!

My 1985 Mercury 75
 

On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

My 1985 Mercury 75
 

On 5/23/2016 10:56 AM, Ryan P. wrote:
On 5/23/2016 9:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?


Won't the trim tab only give me neutral steering at one specific tilt
and speed?

You'd be surprised at how much a little tweak in the tab effects
steering effort for better or worse.

My 1985 Mercury 75
 

On 5/23/2016 10:05 AM, Keine Krauseschei�e wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P." wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Here's a link to some info you've probably already looked at.

http://www.thehulltruth.com/boating-...uld-cause.html

Yes, that is one of the first threads I read. I had thought about a
NFB helm when I was replacing it last year, but I'm glad I didn't.
While it stay on tack if I let go of the helm, I think I'd still have
the issue of it being very difficult to turn the wheel to the left.

The best line I got out of that thread was:

"I can't find it right now but Mercury Marine used to have words and
music describing propeller torque. It was crystal clear that when the
motor is trimmed down/in torque will want to make the boat turn to the
right. When the prop shaft is parallel to the surface of the water the
torque (effort to turn right or left) will be the same. When the motor
is trimmed up/out the boat will want to turn to the left.

The procedure is to find the trim setting that provides most efficient
operation. Then adjust the trim tab anode, if necessary, to eliminate
steering torque at that trim position. "

My 1985 Mercury 75
 

On 5/23/2016 10:06 AM, Justan Olphart wrote:
On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

So that being said, if I had neutral steering before I added the 7"
setback from the power tilt unit, Do I need to drop the motor down 1" to
make it equal with its height prior to the modification, or do I need to
drop it farther?

My 1985 Mercury 75
 

On 5/23/2016 11:33 AM, Ryan P. wrote:
On 5/23/2016 10:06 AM, Justan Olphart wrote:
On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water
would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get
excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

So that being said, if I had neutral steering before I added the 7"
setback from the power tilt unit, Do I need to drop the motor down 1" to
make it equal with its height prior to the modification, or do I need to
drop it farther?
There's no formula. It's all trial and error.

My 1985 Mercury 75
 

On Mon, 23 May 2016 11:59:45 -0400, Justan Olphart
wrote:

On 5/23/2016 11:33 AM, Ryan P. wrote:
On 5/23/2016 10:06 AM, Justan Olphart wrote:
On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water
would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get
excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

So that being said, if I had neutral steering before I added the 7"
setback from the power tilt unit, Do I need to drop the motor down 1" to
make it equal with its height prior to the modification, or do I need to
drop it farther?
There's no formula. It's all trial and error.

I usually use a sharpie pen and mark which way it was pulling at each
adjustment I try. After a few tries you can get a pretty good guess
which one is the best compromise. I usually want it nulled out at
around 4000 RM add the best trim.

My 1985 Mercury 75
 

On 5/23/2016 10:59 AM, Justan Olphart wrote:
On 5/23/2016 11:33 AM, Ryan P. wrote:
On 5/23/2016 10:06 AM, Justan Olphart wrote:
On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg,
since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water
would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it
gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get
excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

So that being said, if I had neutral steering before I added the 7"
setback from the power tilt unit, Do I need to drop the motor down 1" to
make it equal with its height prior to the modification, or do I need to
drop it farther?
There's no formula. It's all trial and error.

Alright... Sounds like I should lower the motor so that when vertical,
it is at its original depth from before I installed the power tilt.

If I still have some pull, I'll play with the trim tab. If it pulls
to the right, I need to adjust the tab counterclockwise, correct?

My 1985 Mercury 75
 

On 5/23/2016 3:27 PM, wrote:
On Mon, 23 May 2016 11:59:45 -0400, Justan Olphart
wrote:

On 5/23/2016 11:33 AM, Ryan P. wrote:
On 5/23/2016 10:06 AM, Justan Olphart wrote:
On 5/23/2016 10:46 AM, wrote:
On Mon, 23 May 2016 08:33:24 -0500, "Ryan P."
wrote:

On 5/17/2016 1:48 PM, Ryan P. wrote:

There was great debate over whether to lower the engine a peg, since
now it sits a little higher when vertical, but with the additional
setback (about 7") and additional down tilt, we figured the water
would
be quiet enough to give me good performance. I can always lower it a
notch if I don't like the way it performs this weekend.

And the answer is... I don't like the way it performs. Oh, it gets on
plain super fast, but now I have a HARD pull to the right. I know I
should be able to tilt the motor back up to about vertical, but now at
cruising speed, vertical brings the prop up too high and I get
excessive
revving.

Am I right in thinking that the hard pull is because the motor is
tilted in too far? Will lowering the motor a inch (or two) actually
alleviate the problem by letting me tilt out farther?

Thanks!

Have you tried adjusting the trim tab?

That might help but I suspect he's getting bow steer. He needs to lower
the motor and make sure he has some bow lift and the bow wake starts
about 1/3 of a boat length from the bow. Once he has that he can tweak
for the performance he wants.

So that being said, if I had neutral steering before I added the 7"
setback from the power tilt unit, Do I need to drop the motor down 1" to
make it equal with its height prior to the modification, or do I need to
drop it farther?
There's no formula. It's all trial and error.

I usually use a sharpie pen and mark which way it was pulling at each
adjustment I try. After a few tries you can get a pretty good guess
which one is the best compromise. I usually want it nulled out at
around 4000 RM add the best trim.


Excellent idea. Thanks!