Another height install question

[jpendergrass]

SO THIS IS A 76' 135 WITH CMC TNT 6" SETBACK ON A 1993 STRATOS 274FS. I'M NOT UNDERSTANDING THIS HULL DESIGN SO I'M QUESTIONING WHERE THE CAVITATION PLATE SHOULD LINE UP WITH, THE VERY BOTTOM OF BOAT OR THE STEPPED HULL?? TAKE A LOOK, LEMME KNOW YOUR THOUGHTS PLEASE.
http://i66.photobucket.com/albums/h276/00GTP/2013-07-07_17-58-03_907.jpg
http://i66.photobucket.com/albums/h276/00GTP/2013-07-07_17-57-46_686.jpg

 

[sutor623]

Re: Another height install question

Use te very bottom as a marker, not the stepped hull. When on plane the stepped back will not be submerged. You normally need to keep the cavitation plate 1" or so above the bottom of the keel. But thats the beauty of a jack plate,you get to play with it a bit!

 

[sutor623]

Re: Another height install question

Just looked at your photos. Trim the motor out flat and measure from the ground to the cav plate, and ground to the keel. Add one inch or so to the ground to keel measurement, and that should be your height of cab plate to ground. You may have to do some test runs and fine tuning.

 

[jpendergrass]

Re: Another height install question

use te very bottom as a marker, not the stepped hull. When on plane the stepped back will not be submerged. You normally need to keep the cavitation plate 1" or so above the bottom of the keel. But thats the beauty of a jack plate,you get to play with it a bit!

wish i had a jackplate, would be easier.

 

[sutor623]

Re: Another height install question

Hmmm I though you had a jack plate from one of your earlier threads.

 

[jpendergrass]

Re: Another height install question

just looked at your photos. Trim the motor out flat and measure from the ground to the cav plate, and ground to the keel. Add one inch or so to the ground to keel measurement, and that should be your height of cab plate to ground. You may have to do some test runs and fine tuning.

so i can probably move the motor up 2 more holes, but i will certainly measure to get 1" above the bottom of boat(keel).

 

[jpendergrass]

Re: Another height install question

hmmm i though you had a jack plate from one of your earlier threads.

had a manual jackplate on old boat, just a new cmc tnt on this setup with same motor