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Author Topic:   Jack Plate?
Sinclair7 posted 01-10-2002 12:38 AM ET (US)   Profile for Sinclair7   Send Email to Sinclair7  
From reading the postings I guess a jack plate raises the motor. Could anyone explain exactly what a jack plate does? Has anyone installed one on a 13'? Where could one be bought and what is a quality brand? How much do they cost?
jimh posted 01-10-2002 12:45 AM ET (US)     Profile for jimh  Send Email to jimh     
"Jack Plate: a setback bracket which provides a minimal setback and is principally intended to provide vertical adjustment of the engine height, usually accomplished with hydraulic cylinders and capable of being remotely actuated and adjusted while underway and at speed."

Quoted from my article at:

Clark Roberts posted 01-10-2002 09:28 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Sinclair, check page 28 of Cetacea for pic of a 13 Alert on which I installed a jack plate/trim unit and used a 25 Yam short (15") shaft on the 20" transom... fantastic rig. Currently I have a 1984 13 sport with a 15" shaft 40hp Mariner/10" setback jack/trim plate and it will run in 10" water on plane and run an honest 40mph! Shallow water running is my objective but with less outboard foot in the water the boat is a better performer also... Clark . Spruce Creek Navy
Taylor posted 01-10-2002 01:54 PM ET (US)     Profile for Taylor  Send Email to Taylor     
Clark, if you are running in 10" of water at 40mph, isn't there a chance that the water will suddenly be only 8" deep?
buster1389 posted 01-12-2002 11:29 PM ET (US)     Profile for buster1389  Send Email to buster1389     
I currently am using a t&h mini jacker on my 1962 13. I installed it to accomodate my long shaft 25 hp evinrude. I have been pleased with the results. i can cruise at about 21k and wot gets about 25k. This jackplate is really a fixed liftplate and can be bought from most marine retailers such as west marine. My only complaint is that i occasionally experience cavitation with a light load on a plane. If there are any other questions about this product, please feel free to ask
Clark Roberts posted 01-13-2002 08:05 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Taylor, there is always a chance that water will get shallower! I said that the boat has the capability to run on plane in 10" of water, I didn't say that I routinely did it! The only do it when necessary to get home over a shallow sand/oyster bar and this is a common occurance for me (some on this forum have taken a ride with me accross the flats and know first hand of the routes I must take)... so the set-up is for my specific requirements... Also, I would never even run on-plane if I didn't have knowledge of water depth, obstructions , etc. I always study charts if water is unfamiliar, get local advice, etc... If you always stay within the markers/channel then one may not need to "study up" on routes etc.. but the waters I travel are often not marked and some are not covered by charts at all so my motto is to use my sounder/push pole and "go in slow - come out fast"... NOT "go in fast until I hit something"! Happy Whalin'.. Clark ... Spruce Creek Navy
Sinclair7 posted 01-13-2002 01:01 PM ET (US)     Profile for Sinclair7  Send Email to Sinclair7     
Thanks for the responses. Are the individual jackplates designed for specific motors? What is an average price? Clark, i burried the shaft of my 25 Tohatsu a few times last summer so i like the idea of having the capability of running in shallow water. Tahnks all.
Safe Boating,
Bigshot posted 01-14-2002 10:38 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
They are not a Holy Grail! They allow a couple inches, not gonnakeep you from burrying your engine. Cost is $200-$700.

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