Question about trim tabs
 

There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

Question about trim tabs
 

"Tim" wrote in message
...
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

Tim,

My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.

For little investment, you might also try one of the following first. I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

JT

Question about trim tabs
 

On 3/30/10 10:10 AM, Tim wrote:
There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?


A properly installed set of tabs will do the job for you. Question...are
you running the prop specified by the manufacturer for that rig? There
are props that on a given boat will produce more bow rise than other
props. You might have a bad mismatch.

I am totally unfamiliar with outdrives. Does yours have enough trim so
that you can pull the lower unit in closer to the bottom of the transom?

BTW, one problem buyers of aftermarket tabs often face...is buying a set
of tabs too small for the job.

Question about trim tabs
 

On Tue, 30 Mar 2010 07:42:04 -0700, "JT"
wrote:

For little investment, you might also try one of the following first. I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

Yes, sometimes known as a Doel-Fin or similar. They are a lot less
expensive than trim tabs and very easy to install. That's what I'd
try first. Also, make sure you are trimmed all the way down when
starting up.

Question about trim tabs
 

On Mar 30, 1:24*pm, Wayne.B wrote:
On Tue, 30 Mar 2010 07:42:04 -0700, "JT"

wrote:
For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

Yes, sometimes known as a Doel-Fin or similar. *They are a lot less
expensive than trim tabs and very easy to install. *That's what I'd
try first. * Also, make sure you are trimmed all the way down when
starting up.

I have hydraulic tabs and I like them. In addition to getting you up
faster they also allow you to cruise at a lower speed. For cruising
they are better than triming the prop down.

Question about trim tabs
 

On Mar 30, 8:42*am, "JT" wrote:
"Tim" wrote in message

...





There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

Tim,

My father had hydraulic trim tabs on his 22 ft. Apollo back in the day, they
were very useful for the application that you are referring. They are also
very helpful if you have an offset in the load, you can equalize easily with
the trim tabs.

For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

JT- Hide quoted text -

- Show quoted text -

Thanks JT. I do have a fin on the lower end, though

Question about trim tabs
 

On Mar 30, 8:52*am, Harry wrote:
On 3/30/10 10:10 AM, Tim wrote:





There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

A properly installed set of tabs will do the job for you. Question...are
you running the prop specified by the manufacturer for that rig? There
are props that on a given boat will produce more bow rise than other
props. You might have a bad mismatch.

I am totally unfamiliar with outdrives. Does yours have enough trim so
that you can pull the lower unit in closer to the bottom of the transom?

BTW, one problem buyers of aftermarket tabs often face...is buying a set
of tabs too small for the job.- Hide quoted text -

- Show quoted text -

That's a pollabiliyt, Harry I'm running the prop that came with the
boat and who knows what it might actually be. I ahve 3 other props for
an Alpha mercuiser, and I believe they are of diffrent pitches. It may
take some experimenting till I ge it right. I can't find any info on
what the stock prop was for this boat, however I do have a pro that
came off a 20 ft. trihull wi the same engine.

Question about trim tabs
 

On Mar 30, 9:07*am, wrote:
On Tue, 30 Mar 2010 07:10:22 -0700 (PDT), Tim
wrote:





There's an old saying at a local high performance engine shop that
says "Speed costs money, how fast do you want to go?" And I know the
old rule usually applies "you get what you pay for? Well for the few
times I've taken my marquis out it's interesting to get it up on
plane. first , if you ease the throttle, you'll do a wheelie to where
you think the boat will flip over backwards and you do little but plow
water , so you have to nail it and you still get an extreme bow rise
but it settles down and know you're going, but you still have to keep
the RPM up above 2800 or the boat wants to drag back. So I'm
investigating trim tabs. There's all kinds on the market anywhere from
sophisticated hydraulic and independently controlled units ranging up
to around $500.00 all the way down to the spring loaded sets that that
are available for around a hundred bucks. I'm sure that trim tabs
would help the boating experience, but *I'm really wondering how much
trim control I'm actually needing. to make a more efficient ride and
run. I'm constantly accused of being 'tight' but I'm not THAT tight,
because I know that money spent in the right direction will save in
fuel and ride in the longer run. But over kill is still overkill. This
is a 23 ft. V-hull Marquis with a 350 GM engine and not some 3000 hp.
40 ft. Fountain off shore racer. So, anyone have any suggestions?

I see a lot of boats in that class with a serious "squatting" and
shaking problem trying to get up on plane. They look like a poodle
pooping a peach pit.

Ma, that jsut about dedscribes it well.

It really screws them up in these skinny water bays and rivers. Have
you tried trimming the engine down more at the start?


Yes, I was wondering in the lower was all the way down myself so on
the trailer I lowered it and it goes as low as it can. so it's not
catching anywhere.

Bear in mind
trim tabs are only going to be effective after you get some speed up
so at the start they are not going to prevent the initial squat. Once
you get going it will bring the stern up faster. Motor trim starts
working right away.- Hide quoted text -

- Show quoted text -

I didn't know that, Greg. Thanks!

Question about trim tabs
 

On Mar 30, 11:30*am, jamesgangnc wrote:
On Mar 30, 1:24*pm, Wayne.B wrote:

On Tue, 30 Mar 2010 07:42:04 -0700, "JT"

wrote:
For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

Yes, sometimes known as a Doel-Fin or similar. *They are a lot less
expensive than trim tabs and very easy to install. *That's what I'd
try first. * Also, make sure you are trimmed all the way down when
starting up.

I have hydraulic tabs and I like them. *In addition to getting you up
faster they also allow you to cruise at a lower speed. *For cruising
they are better than triming the prop down.

Thanks!

This is all being aken into consideration.

Question about trim tabs
 

On Mar 30, 11:24*am, Wayne.B wrote:
On Tue, 30 Mar 2010 07:42:04 -0700, "JT"

wrote:
For little investment, you might also try one of the following first. *I
have no experience on larger boats, however I know they work well on smaller
run abouts in the 16 to 18 ft. range. There are several other manufactures
on the market besides this one.

http://www.davisnet.com/MARINE/produ...asp?pnum=00448

Yes, sometimes known as a Doel-Fin or similar. *They are a lot less
expensive than trim tabs and very easy to install. *That's what I'd
try first. * Also, make sure you are trimmed all the way down when
starting up.

Been there Wayne. But then again, now that I think about it. This is a
different trim set up than what I'm really used to. On my small boat I
have the trim control right on the throttle handle where this Marquis
has the Morris throttle set up with the trim buttons on the dash. kind
of awkward but I suppose thats how it is. This might take a bit of
getting used to on positioning the lower.