My outboard riser

Apex Predator · Jun 21, 2012

I've got a 1644 Monark and long shaft 25 Mercury. The anti-ventilation (cavitation) plate was 3" below the bottom of the boat. I fabricated this riser out of 3" X 3/8" aluminum angle and 2"X3"X1/4" rectangle. Hopefully all my measurements are accurate, cause it looks awfully high. Once the 5200 sets up a day or so, I'll get the engine mounted again. I plan to fish her this weekend, so I'll let ya'll know how she performs.

lckstckn2smknbrls · Jun 21, 2012

It's going to be strong that's for sure. You should have test the boat and motor on the water before using the 5200.

Apex Predator · Jun 21, 2012

It's been raining a lot lately, and I don't have a cover for her yet. If I have to lower the height, it will mean replacing the rectangle tube. I sure hope it works out like it is.

kfa4303 · Jun 21, 2012

Cool design Apex. Very strong, simple and easy to make. I think I'm going to steal it

I'm in the same boat so to speak. I need to raise my motor ('66 20 hp Johnson) a few inches, but I don't want/need a million dollar adjustable jackplate. Just something to raise the motor a bit. Where did you get your aluminum? How much? Keep us posted on the test run. I'm sure it will be fine.

Apex Predator · Jun 21, 2012

https://www.onlinemetals.com/

sawmill · Jun 21, 2012

I like this idea. I may use it also. How long is the tubing on top? Thanks Ivan

Apex Predator · Jun 22, 2012

This one is 14", but I would measure your motor to make sure everything fits.

fool4fish1226 · Jun 22, 2012

Looks great - nice and strong - good luck with the test run

Apex Predator · Jul 11, 2012

This bracket works great! My top speed before the bracket was 29 mph. With the motor raised up she runs 28 mph. I have added about 150# though, so I'm happy. She draws three inches less of water, which is the best gain.

acabtp · Jul 11, 2012

nice jack plate! simple and does the trick

user 7806 · Jul 11, 2012

Nice work, glad it worked out for you. I'm not seeing a #150 of metal there, where did all the extra weight come from?

novaman · Jul 11, 2012

AP
Very nice =D> , clean ,simple and rugged. And less than a jackplate to boot.

Apex Predator · Jul 11, 2012

Most of the weight is the group 29 battery, trolling motor, and deck I built on the bow.

jigngrub · Jul 11, 2012

A very good craftsmanlike solution to your problem. Simple, strong, and effective.

user 7806 · Jul 12, 2012

Apex Predator said:
Most of the weight is the group 29 battery, trolling motor, and deck I built on the bow.

Okay that makes sense, I read it that the jack plate was #150

My outboard riser

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My outboard riser

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