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Max Online: 36273 @ 01/23/13 02:34 PM
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#12526300 - 12/04/17 10:46 AM Jackplate or 4-blade prop? Or both?
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Just wanting some opinions on weather my boat would better benefit from a jackplate or a 4-blade prop. It is a 1990 Stratos 201 Pro with a 1987 Johnson 140(13.5 X 18P Raker prop); obviously the boat is very underpowered compared to the way bass boats are rigged now days. I'm not interested in trying to gain speed, the boat will do 46mph at 6000rpm and i feel like that is about all i can expect this boat to run and that is fine with me. But what i am interested in is trying to help this little motor get the boat up out of the water at cruising speeds, or in other words be able to stay on plane at lower RPMs. Also, it's pretty easy for the prop to blowout when turning unless i have it trimmed all the way down. The holeshot is really good, it will spin up to 4500rpm and the boat shoots right out, but when you pull the throttle back a little to cruise that lazy Stratos likes to sit back down in the water. This may just be something that i have to deal with given the small motor, but thought i'd ask. Thanks in advance for any suggestions you guys have on this.

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#12526451 - 12/04/17 12:15 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
joho5 Online   content
Extreme Angler

Registered: 07/03/08
Posts: 2877
Loc: Abbott, TX
Originally Posted By: PlanoPaul
Just wanting some opinions on weather my boat would better benefit from a jackplate or a 4-blade prop. It is a 1990 Stratos 201 Pro with a 1987 Johnson 140(13.5 X 18P Raker prop); obviously the boat is very underpowered compared to the way bass boats are rigged now days. I'm not interested in trying to gain speed, the boat will do 46mph at 6000rpm and i feel like that is about all i can expect this boat to run and that is fine with me. But what i am interested in is trying to help this little motor get the boat up out of the water at cruising speeds, or in other words be able to stay on plane at lower RPMs. Also, it's pretty easy for the prop to blowout when turning unless i have it trimmed all the way down. The holeshot is really good, it will spin up to 4500rpm and the boat shoots right out, but when you pull the throttle back a little to cruise that lazy Stratos likes to sit back down in the water. This may just be something that i have to deal with given the small motor, but thought i'd ask. Thanks in advance for any suggestions you guys have on this.


WHen you are jumping out of the hole...I am assuming you keep it trimmed down? Do you know what your prop to pad measurement is currently? Or when running on plane...where you cavitation plate is?

What is the length and weight of your hull? It seems to me, a healthy 140hp would benefit from a little more pitch.

There are some smart guys that will respond behind me hopefully...but those are the things that pop out to me.

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#12526660 - 12/04/17 02:53 PM Re: Jackplate or 4-blade prop? Or both? [Re: joho5]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Originally Posted By: joho5
Originally Posted By: PlanoPaul
Just wanting some opinions on weather my boat would better benefit from a jackplate or a 4-blade prop. It is a 1990 Stratos 201 Pro with a 1987 Johnson 140(13.5 X 18P Raker prop); obviously the boat is very underpowered compared to the way bass boats are rigged now days. I'm not interested in trying to gain speed, the boat will do 46mph at 6000rpm and i feel like that is about all i can expect this boat to run and that is fine with me. But what i am interested in is trying to help this little motor get the boat up out of the water at cruising speeds, or in other words be able to stay on plane at lower RPMs. Also, it's pretty easy for the prop to blowout when turning unless i have it trimmed all the way down. The holeshot is really good, it will spin up to 4500rpm and the boat shoots right out, but when you pull the throttle back a little to cruise that lazy Stratos likes to sit back down in the water. This may just be something that i have to deal with given the small motor, but thought i'd ask. Thanks in advance for any suggestions you guys have on this.


WHen you are jumping out of the hole...I am assuming you keep it trimmed down? Do you know what your prop to pad measurement is currently? Or when running on plane...where you cavitation plate is?

What is the length and weight of your hull? It seems to me, a healthy 140hp would benefit from a little more pitch.

There are some smart guys that will respond behind me hopefully...but those are the things that pop out to me.


It’s a 20’4” boat, and while I don’t know what the exact weight is, I know it’s NOT a lightweight. It’s a big boat for a 140hp to push I can assure you. The motor is healthy as I rebuilt it last winter, has 130psi on every cylinder, so it has the power that it should. I have wondered about adding a little pitch, but I like where the WOT rpms are right now. I understand you don’t want to lug a V4 looper, or any of them as far as that goes. I haven’t measured where the motor is right now, but looking at it on the transom, it appears to be at a fairly “normal” position. Also I should add, there is a “whale-tail” that has been put on at some point.

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#12526715 - 12/04/17 03:34 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
I measured the cavitation plate and it is roughly 3 inches above the bottom of the hull.

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#12526742 - 12/04/17 03:49 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
joho5 Online   content
Extreme Angler

Registered: 07/03/08
Posts: 2877
Loc: Abbott, TX
Originally Posted By: PlanoPaul
I measured the cavitation plate and it is roughly 3 inches above the bottom of the hull.


You need to see what it’s doing under load at wot. I bet it’s above water line at 3” though.

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#12526767 - 12/04/17 04:12 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2249
Loc: ft worth
to much "tank" not enough "horse power", torque........... you may be askin' to much outta tha little motor....

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#12527366 - 12/05/17 07:17 AM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
T-racer Online   content
Pro Angler

Registered: 08/24/16
Posts: 582
Loc: Melissa/Grand Prairie, Tx
Jack plate in my experience will help any boat, and a four blade prop will probably help you are handling going around turns. With that being said, that 140 horse is really small for that boat… If you were happy with it though, just keep on fishing away. I would certainly be looking for a cheap Re power though… I see people with 175s on those 201s and still think it needs more. You do not need to change pitch though, that is about right on the RPMs.
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Triton Tr20 - 225 Optimax
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#12527615 - 12/05/17 10:11 AM Re: Jackplate or 4-blade prop? Or both? [Re: TLW]
Bandit 200 XP Offline
TFF Celebrity

Registered: 03/03/11
Posts: 5019
Loc: Ray Roberts
Originally Posted By: TLW
to much "tank" not enough "horse power", torque........... you may be askin' to much outta tha little motor....

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#12527789 - 12/05/17 12:09 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Thanks for the input guys. This has been a project boat for me as i got it for $600 because the motor had been cooked and the boat needed a LOT of TLC. I've since rebuilt the motor, put new carpet in it, put a new floor in it, and restored the gel-coat. It has turned out to be a decent little rig, now i guess i'm just getting a little picky with the performance issues. I should just be happy that this 140 gets it on plane... roflmao Like what was said, i think the only thing that makes sense is to strap some more horsepower to the back, just hard to get rid of a freshly rebuilt motor that runs like a top.

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#12527902 - 12/05/17 01:58 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2249
Loc: ft worth
not really tha horse power its lack of a coupla cylinders and torque... that little motor ona laser or 340 ranger, jus ta name a couple, would "scoot"....

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#12527941 - 12/05/17 02:39 PM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
steve@hydrodynamics Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6786
Loc: Quitman,Tx
6 inch plate and stick with the 3 blades. that motor doesn't have enough torque to take advantage of
a 4 blade prop.

the plate will help with some bow lift and over all handling and some performance.
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#12527998 - 12/05/17 03:28 PM Re: Jackplate or 4-blade prop? Or both? [Re: steve@hydrodynamics]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Originally Posted By: steve@hydrodynamics
6 inch plate and stick with the 3 blades. that motor doesn't have enough torque to take advantage of
a 4 blade prop.

the plate will help with some bow lift and over all handling and some performance.


This is exactly what I was hoping someone would say. It would be great to be able to get the nose up a bit more and the water out of my face!! This is certainly not a boat you want to be driving in cold, rough water on a windy day! Thanks for the reply thumb

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#12529951 - 12/07/17 08:02 AM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Just curious, would i have to put longer steering cables on to accommodate the 6" set back?

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#12530202 - 12/07/17 10:30 AM Re: Jackplate or 4-blade prop? Or both? [Re: PlanoPaul]
steve@hydrodynamics Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6786
Loc: Quitman,Tx
usually not.. but sometimes you won't know till you yank the motor off the transom.
_________________________
www.hydrodynamics-usa.com
903-763-5225





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#12530224 - 12/07/17 10:44 AM Re: Jackplate or 4-blade prop? Or both? [Re: steve@hydrodynamics]
PlanoPaul Online   content
Outdoorsman

Registered: 12/16/13
Posts: 232
Loc: Plano, TX
Originally Posted By: steve@hydrodynamics
usually not.. but sometimes you won't know till you yank the motor off the transom.


Kinda what I was thinking. Thank you sir thumb

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