Will a Merc 75 fit under the M seat???

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Highlander
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Post by Highlander »

Bobby T

Thats a load of crap from attorneys, a 200hp eng in a small boat has to be handled with respect , some dum ass who does'nt know what he's doing or is showing off is called STUPIDITY , I can take any motor cycle rev it full throttle sit on the ass end drop the clutch & flipp it on top of me now does that mean all motor cycles are unsafe ? No . With that lodgic a person takes a gun puts a bullet in it plays russian rullet. Now lets see it was either the bullet or the guns fault :? ???????????????? right :?
people have to get responsible for their actions :evil:
These wedges have nothing to do with any death But "STUPIDITY DOES"
John
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Bobby T.-26X #4767
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Post by Bobby T.-26X #4767 »

look...i'm just suggesting to be careful.
i don't believe that it's wise to modify an X or M with transom wedges to create a high speed unlimited racer under power.
the reason for a 70, 75, 90, or 115 should be for the sole purpose of getting to 20mph with a heavy load while at 2/3 to 3/4 throttle.
doing "hole shots" or WOT with maximum trim to bury the bow is not wise in a Mac.
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Mac Ziggy
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Post by Mac Ziggy »

rvdave,

Thanks for the info, I will re-read that section. I have lowered the board as much as a foot and still get the splash. Maybe there's a sweet spot that I missed but it's good to know the issue is addressed in the manual.

Bobby,

I appreciate your concerns and I agree that the Mac is not a racing machine but still requires careful consideration when making changes. I put the 90 on so I could do just as you say, motor at 20 mph with a load at 2/3 to 3/4 throttle.

That would be 4000 to 5000 rpm on the Etec and the best performance range for the motor. I can fix the splash problem and it would be nice to see over the bow but not at the expense of making the boat unsafe. The one time I did go 30 mph, I felt a little uneasy about the handling of the Mac.

With that rounded stern it leans into a turn like a motorcycle. That may sound like fun but if you are top heavy, hit a wake, suddenly loose power or just turn too sharpe, you could be in trouble. I could say I would only go that fast on a long straight-a-way but you never know what is on the water.

The X I had with a Honda 50 took forever to get up speed and it just wallowed along after that. I am very pleased with the performance of the Etec and the M suits my needs very well. I still have less than 20 hrs and there is still a lot to learn and enjoy.

I have my boom now so maybe I need to focus on sailing.
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Highlander
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Post by Highlander »

The purpose of the wedges is to allow the eng to be mounted on a transom that does not have the proper angle to allow for the max range of the power trim if the transom is to straight 90degree you will only get about 5 percent of your trim in angle which means the boat will be ploughing through the water pushing all kinds of water trying to get up on plane useing all kinds of gas trying to acomplish this, in the mean time the boat is bow high no vision to see where your going, also a boat in this possition is unsafe due to the transom being to low in the water in follwing seas & will be pushed side ways in a trough heading into seas full trim allows the boat to be properly trimmed to meet and avoid any of these conditions. The wedges do not make the boat any faster they allow for proper trim which lets the boat reach its max speed sooner depending on your eng's HP, any boat with an eng should be handle with care regardless of eng.HP due to the dangers of a propeler & no brakes so to speak of other than reverse. Speaking of which I'm now off to make my new mast extension to which is a mod that I'm doing that will allow me to more than double my sail area Yeh double the sail HP watch my butt plane :mac19: :) :P :wink:

Cheeers john
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Duane Dunn, Allegro
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Post by Duane Dunn, Allegro »

Bluewater Yachts is now installing transom wedges on all their M's. They have found that they gained 1-1/2 to 2 MPH with a Suzuki 70 simply by installing the wedge so you can get the proper trim. These are guys with decades of MacGregor experience that have delivered more Mac's than any other dealer in the country.
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kmclemore
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Post by kmclemore »

I do believe I'm getting weggie envy.


I suppose this means that I should at the very least be running my Tohatsu 50 trimmed fully down for best speed?
Last edited by kmclemore on Mon May 21, 2007 9:19 am, edited 1 time in total.
deja_vu
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Post by deja_vu »

Well if BW is doing it now then I know I've got to get me a wedgie...


Off to the boat store...and to explain to my wife why I need to take the motor off the boat....looks like I've got my Memorial Day weekend project now. I have no desire to take the boat out this weekend, the lakes around here get crazy.

Well unless I actually get the nerve up to put my $7000 engine in the Great Salt Lake, which is never all that busy, but if you don't make sure to completely flush everything out the engine won't last all that long. 15-20% salt content just doesn't do nice things over the long term to an outboard.

I wonder how hard the 5200 I used to seal the bolt holes will be to remove :?
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Bobby T.-26X #4767
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Post by Bobby T.-26X #4767 »

kmclemore wrote:I do believe I'm getting weggie envy.

I suppose this means that I should at the very least be running my Tohatsu 50 trimmed fully down for best speed?
see...i disagree with all of this nonsense!
with or without wedges, a 50hp doesn't have enough "push" power to get up on a true plane (maybe with a completely stripped Mac).
if wedges made a difference, than all 50hp installs would have been done that way.

it really only works with a higher horsepower motors. however, i stand by the fact that it can be risky (i.e. wedges and fully trimmed down Mac at high speeds).

i can see it now...next it'll be Hydraulic JACKPLATES

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then, it'll be STABILIZER PLATES

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where will it end???

the solution> just re-power with a lightweight 90hp. no other mods are necessary.

Bob T.
"DāBob"
'02X w/ '04 90-TLDI (14" x 11 pitch)
Dinghy Motor: '06 2.5-Suzuki
deja_vu
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Post by deja_vu »

Well it's not necessarily about getting it out of the hole, or getting a massive top speed. It is about efficiency. If BW claims a 1.5-2MPH speed increase from a 70HP motor with a set of wedges than thats got to mean something doesn't it?

For optimal efficiency the motor needs to be able to tilt down a certain angle, if Ms transom is built too close to 90 degrees than it would need wedges to achieve that proper angle. It's just a matter of getting the motor to where it should be had the transom had a better design anyway.
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beene
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Post by beene »

EXACTLY
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Highlander
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pro highjacker plate hp

Post by Highlander »

Bobby T

Hghjacker plates you've been snooping around my inventory & watching my posts you mean like this

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shame on you anyway the concrete floor is just vibrating with that jackplate just waiting to attach itself to the butt of my :mac19:

Hope I did'nt burst your bubble :D :D :P :wink:

Cheers John
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Highlander
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Post by Highlander »

Bobby T.

Winged stabilizer's sorry buddy but looks like I'm a little ahead of you here , by the way they help stop the boat from sliding sideways on sharp turns , was that not one of your concerns see bobby you got to try these things before you can really can comment, it works great helps the boat get on a plane faster can plane with less rpm's save's gas , with the eng. in the down position while sailing in rough weather it act's like a second winged keel :idea:

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Anyway Bobby I realize your concerns for the safety of Beene & his family are reall , so don't take my little tease to heart. I'm just jesting with you in fun ok

Cheers john
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Bobby T.-26X #4767
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Post by Bobby T.-26X #4767 »

LOL 8)
deja_vu
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Post by deja_vu »

John,

I think you need to motorize that whale fin you've got strapped to your motor to see if you can get some extra propulsion....get some verticle movement going with it....of course that'll make the ride a bit rough, what with all the up and down motion..
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