Jackplate set back, how much?

[JESTERxHEAD]

How does somebody determine how much set back they need for their boat?


Too much or not enough what does each do?

[1FASTLASER]

Tough question Jester......Trial and error has been the way to do it in the past but to help you out I will put it this way..............

From past experience this is what I have found out......

16-18ft boats like 6" jackplates

18-20ft boats like 8" jackplates

20ft+ boats like 10" or more

Now this is not written in stone........like anything else there are exceptions to the rules.

[JESTERxHEAD]

will a stratos hold an outboard 8" off the transom?

[1FASTLASER]

What length boat.........I am assuming you are referring to yours......if so YES...........I know for a FACT....that an 8" is about as perfect as you are going to get.

[JESTERxHEAD]

sweet......thats what I like to hear.....new jackplate time! hahahaha

[1FASTLASER]

What do you have right now.if memory serves me right you got a CMC plate right now.....the 5 1/2" model ......correct?????.....Is it a manual or a hydraulic???

[JESTERxHEAD]

yes its a cmc 5.5" hydraulic.... I still want to stay with the hydraulic system ones....

[1FASTLASER]

Ok when ya make the swap I got dibs on the CMC Hydraulic if you decide to part with it.

[JESTERxHEAD]

Deal!!!!! You will be the first to know!!!!!

[kipp]

That 8 hydro after a 5.5 will change your life Jester......do it..hehehe

[JESTERxHEAD]

hopefully it will give me enough leverage to get my fat out of the water hahahahaha....I'm sure with an 8" and a turbo txp prop I will be in the lower 70's fo sho!!!!!

[ally260]

One thing ya'll arn't considering is what your lookin' for from tha set up. Transom strength SHOULD NOT be an issue. If it is ya need ta take a look at it. Pure hole shot and acceleration will be a "short" jp where all out top end it will need to "grow" some. What 1fast listed is a general "rule of thunb" or starting point for tha length and type of boat. Just something ya might consider. For instance, on my allys I ran 4" (20 footers) for acceleration. On tha lasers I ran 8 ta 10" (18 footers) for bigger top end.................JMO

[JESTERxHEAD]

True....but isnt an allison much lighter than my boat?

I understand the theory behind jackplates.....leverage,fulcurm and so on....

allisons are naturally a bow lifting boat.....well stratos's are well........not.....

I am at the point where I would need just a bit more leverage to get my bow up and the boat out of the water.....

I think with a 4 blade turbo txp & an 8" hydraulic jackplate I would have the nice balance between top speed and hole shot.....given my current setup with a omc 24" raker and a 5.5 cmc jackplate....

[1FASTLASER]

One thing ya'll arn't considering is what your lookin' for from tha set up. Transom strength SHOULD NOT be an issue. If it is ya need ta take a look at it. Pure hole shot and acceleration will be a "short" jp where all out top end it will need to "grow" some. What 1fast listed is a general "rule of thunb" or starting point for tha length and type of boat. Just something ya might consider. For instance, on my allys I ran 4" (20 footers) for acceleration. On tha lasers I ran 8 ta 10" (18 footers) for bigger top end.................JMO

Ole Alley is correct about the difference in the in setback and what it does to certain hulls. The reason I know about the Stratos and the 8" is I spent the better part of the summer 2 years ago with the same hull and we ran 6,8 and 10" plates and a truck load of props. We finally settled down with the Fury prop and the 8"plate. He lacked just a tad on holeshot but when she laid over LOOK OUT...........was one of the fastest Startos boats I had run. Only difference between his rig and yours Jester is he was running the ETEC.

[JESTERxHEAD]

I see.....thanks for the info ally and laser!

[721ProXP]

For hole shot you have the advantage of the Hydraulic plate. Raise it all the way up and tuck the motor all the way in. Then lower the motor for the run out, and then you can bring it back up.

Much better hole shot than a fixed Jack Plate.

You find that the motor will run a little higher out a few more inches.
721 ProXP