Today I installed my mini jacker on my 1542
Tracker. Engine is a short shaft 2015 Merc 20hp.
When I bought the boat the cavitation plate
was perfectly level with the keel of the boat
which is great. But I wanted to squeeze every
Mph out of the boat so I ordered a mini jacker.
The purpose was to set the engine back and lift
it 1 inch over the transom. Well it is easier said then
done. The problem I ran into is that if you don't use
the whole 3 inches of the jackplate and you want
to use less, the butterfly's to tighten the outboard hit
the transom and you can not tighten them. I had to buy
longer bolts and a 1.5 X 1.5 piece of wood to extend the
Jackplate even further so I couldn't tighten the butterflys.
Anyway I ended up going up an inch over the transom, but
since it's setback 6 inches the cavitation plate is only a 1/2 inch
over the keel . I'm gonna try it like this first and I have
probably 3/4 of an inch to go up or down . Here are some pics,
you can see how close the butterfly knobs are close to the transom.
Once I get this out on the water with this setup, I'll let you guys
know if there was a speed increase .
Tracker. Engine is a short shaft 2015 Merc 20hp.
When I bought the boat the cavitation plate
was perfectly level with the keel of the boat
which is great. But I wanted to squeeze every
Mph out of the boat so I ordered a mini jacker.
The purpose was to set the engine back and lift
it 1 inch over the transom. Well it is easier said then
done. The problem I ran into is that if you don't use
the whole 3 inches of the jackplate and you want
to use less, the butterfly's to tighten the outboard hit
the transom and you can not tighten them. I had to buy
longer bolts and a 1.5 X 1.5 piece of wood to extend the
Jackplate even further so I couldn't tighten the butterflys.
Anyway I ended up going up an inch over the transom, but
since it's setback 6 inches the cavitation plate is only a 1/2 inch
over the keel . I'm gonna try it like this first and I have
probably 3/4 of an inch to go up or down . Here are some pics,
you can see how close the butterfly knobs are close to the transom.
Once I get this out on the water with this setup, I'll let you guys
know if there was a speed increase .