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jackplate??can someone help??
- Thread starter jtellor
- Start date
Boston Predictor
Well-known member
A jackplate is a good idea for many reasons. The Amount of setback you need is usually determined by the length of boat and the size of the engine. Having the engine setback further allows the propeller to spin in "cleaner" water therefore giving it more "bite". Another advantage to having a jackplate is being able to adjust the motors height vertically. In terms of Propshaft relation to the pad. (Flat area at the bottom of the hull)
Raising the motor higher allows the prop to spin more freely thus increasing your RPMs. Youll see alot of guys here using jackplates and running Choppers because choppers are generally surface running props and work well with the engine jacked up. Jackplates are not only good for engine performance but hull performance as well. The boat will be alot less wet, meaning more of the hull will be out of the water and not slowing you down, and basically changing the whole atttitude of the boat. When considering getting a jackplate for your boat its a good idea to bite the bullet, drop a little more cash and get a Hydraulic Jackplate. Its always nice to be able to adjust your engine height depending on the water conditions at any given moment. When its rough you want that prop deep so the boat will plow through the slop better, and when its dead flat glass, you want that sucker jacked up as high as you can get it w/ out losing water pressure. Most guys who have Enchanters usually have 10-12'' setback so that might be a good place to start.
Raising the motor higher allows the prop to spin more freely thus increasing your RPMs. Youll see alot of guys here using jackplates and running Choppers because choppers are generally surface running props and work well with the engine jacked up. Jackplates are not only good for engine performance but hull performance as well. The boat will be alot less wet, meaning more of the hull will be out of the water and not slowing you down, and basically changing the whole atttitude of the boat. When considering getting a jackplate for your boat its a good idea to bite the bullet, drop a little more cash and get a Hydraulic Jackplate. Its always nice to be able to adjust your engine height depending on the water conditions at any given moment. When its rough you want that prop deep so the boat will plow through the slop better, and when its dead flat glass, you want that sucker jacked up as high as you can get it w/ out losing water pressure. Most guys who have Enchanters usually have 10-12'' setback so that might be a good place to start.
Well said BP, I will also add that with a jack plate it is also a good idea to install a water pressure gage. When raising the engine up its a good idea to keep an eye on the water pressure. You don't want to run the engine so high that you over heat.
I'd recommend starting with 10" setback jackplate and put the propshaft 3" below the pad, then adjust from there. Unless you're happy with the performance of the boat, then don't change it! If you're happy, then dont add any setback. There are some side-effects to adding setback, such as extra transom stress, steering cable length issues, and even things like your mooring cover not fitting anymore.
hotdaddy27
Well-known member
I wouldn't go much further back then 10".
I went out to 14 and had trouble pulling a slalom (sp?) skier out of the hole. (Kinda dragged him for the first 10 feet). It sucked when skiing, even with bigger HP.
I went with 10" on my new boat, which is where my old 21 ran best all around.
If you don't ski then you would be fine further back.
Just my experiences.
I went out to 14 and had trouble pulling a slalom (sp?) skier out of the hole. (Kinda dragged him for the first 10 feet). It sucked when skiing, even with bigger HP.
I went with 10" on my new boat, which is where my old 21 ran best all around.
If you don't ski then you would be fine further back.
Just my experiences.
jtellor
Member
thanks everyone...that cleared alot up..but i still am a lil confused with one thing.....if i go 10" will it help me get out of the hole better or make it worse than it is now??? because i will still be using it to pull skiers and tubers....and last year with my big tube and my 275lb friend it was a little difficult getting going without blowing the prop out...also i was looking and i seen a couple cracks running from each side...they are small and it didnt feel like the transom was flexing or anything..but will a jackplate crack it more??? and i am happy with the boat.....it runs very well but.....i could always go faster!!!
The farther you set the motor back, the more stress will be on the transom. Will the cracks get bigger? I'd say 'yes' if you use the boat hard or if the transom has any weakness from moisture.
As far as hole-shot goes, I saw no change when I took my Pulsare from 5.5" of setback to 10". I was running a great prop though, a 3 blade Tempest labbed for that purpose. Boats are all trial and error. What works for one may or may not work for another. You don't need setback for pulling toys, you do need setback for going faster. The fun is finding the right balance for your particular hull and prop
As far as hole-shot goes, I saw no change when I took my Pulsare from 5.5" of setback to 10". I was running a great prop though, a 3 blade Tempest labbed for that purpose. Boats are all trial and error. What works for one may or may not work for another. You don't need setback for pulling toys, you do need setback for going faster. The fun is finding the right balance for your particular hull and prop
zstevens
Well-known member
jw i thougt that was the expensive part "finding the right set up" lol ! the fun comes w/ the right setup ! just playin z . while on the topic , if the prop is too deep will that slow the holeshot , w/ the hyd. range of motion all the way down is deeper than it was before i installed the j/p ?