M80's or M120's

[cSickNick]

Guys,

I installed the M120's as Bennett's Tom McGow recommended. The ride is now sweetened!

Here is some of the info from our offline chat. Tom was a big help!

Thanks again Nick

******

-----Original Message-----

Nick,

Actually there are no instructions specific to the stepped hull on your
SeaCraft. There just aren’t that many boats like that out there like
them! As you may know I am a Classic SeaCraft fan and Like the hull very much!

I would split the difference with the Tab edge about 1-1/2" from the chin and about 1/2" into the first step.

The shorter actuators com standard in the M120 their overall length is
11-1/2" and they require about 10" vertical height on the transom,
perpendicular to the deadrise.

Yes a waterproof Rocker Switch is in the kit.

I hope this helps,

Tom

-----Original Message-----

Ok, you sold me on the M120's.

So, you would recommend mounting 1" from the chine to fit exactly over
the outer step? Would this be in the instructions for this type of hull?

- thanks Nick

-----Original Message-----

Nick,

Good questions! I should have been a bit clearer in my response. There
will be a noticeable difference in the 80 and 120, with the 120s giving
much better result at lower speeds. Since the M120 (and 80) have drop
fins on the sides of the Tabs you can indeed mount them closer to the
chine since they won't through spray out as much as a "flat" Tab.

Either Trim Tabs will work well on your SeaCraft, but if she were mine I
would mount the M120s.

Let me know what you think.

Tom

-----Original Message-----

Hi Tom,

My concern is if there is a significant difference on this type of hull
with the bigger M120's since the M80's fit nicely in the outer step.

The outer step measures 11", if you install 3" from chine, it leaves you
with 8" span, perfect for the M80's.

If i go with the M120's(10" span), does the extra 2" span that overhangs
on the second step on this type of hull really do anything? I am
assuming you need to still maintain the 3" from chine and not move them
to 1" from the chine to have them fit in the outer step?

I am sure the extra 2" chord on the M120's would provide more lift.
Would it really be noticeable? I guess i am trying to stay closer to the
standard tab 9" chord looks .... 12" seems big ....

Nick

-----Original Message-----

Nick,

Thanks for your e-mail. You are correct, due to the hull shape the 18 x
9 is not the best choice. I have to agree with most of the posters at
the forum, and I would go with the M120s. By the way the M120s have the
shorter actuator as standard so they will likely leave room for a
bracket.

Let me know what you think.

Tom

Tom McGow
Director of Client Services
Bennett Marine