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Jackplate or 4-blade prop? Or both?
#12526300
12/04/17 04:46 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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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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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12526451
12/04/17 06:15 PM
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Joined: Jul 2008
Posts: 3,022
joho5
TFF Team Angler
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TFF Team Angler
Joined: Jul 2008
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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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Re: Jackplate or 4-blade prop? Or both?
[Re: joho5]
#12526660
12/04/17 08:53 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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Angler
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OP
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Joined: Dec 2013
Posts: 459 |
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. Its a 204 boat, and while I dont know what the exact weight is, I know its NOT a lightweight. Its 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 dont want to lug a V4 looper, or any of them as far as that goes. I havent 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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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12526715
12/04/17 09:34 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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I measured the cavitation plate and it is roughly 3 inches above the bottom of the hull.
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12526742
12/04/17 09:49 PM
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Joined: Jul 2008
Posts: 3,022
joho5
TFF Team Angler
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TFF Team Angler
Joined: Jul 2008
Posts: 3,022 |
I measured the cavitation plate and it is roughly 3 inches above the bottom of the hull. You need to see what its doing under load at wot. I bet its above water line at 3 though.
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12526767
12/04/17 10:12 PM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
Joined: Nov 2006
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to much "tank" not enough "horse power", torque........... you may be askin' to much outta tha little motor....
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12527366
12/05/17 01:17 PM
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Joined: Aug 2016
Posts: 1,476
T-racer @ Mallard Marine
Extreme Angler
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Extreme Angler
Joined: Aug 2016
Posts: 1,476 |
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.
Mallard Marine Nacogdoches, Tx 936-225-3244 - Authorized Sales/Service Mercury Outboards - Allison Boats
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Re: Jackplate or 4-blade prop? Or both?
[Re: TLW]
#12527615
12/05/17 04:11 PM
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Joined: Mar 2011
Posts: 14,049
Bandit 200 XP
TFF Guru
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to much "tank" not enough "horse power", torque........... you may be askin' to much outta tha little motor....
Triton 200 XP 200 Yamaha 0X66
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12527789
12/05/17 06:09 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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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... 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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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12527902
12/05/17 07:58 PM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
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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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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12527941
12/05/17 08:39 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
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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Re: Jackplate or 4-blade prop? Or both?
[Re: steve@S2Marine]
#12527998
12/05/17 09:28 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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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
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12529951
12/07/17 02:02 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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Just curious, would i have to put longer steering cables on to accommodate the 6" set back?
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Re: Jackplate or 4-blade prop? Or both?
[Re: PlanoPaul]
#12530202
12/07/17 04:30 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
usually not.. but sometimes you won't know till you yank the motor off the transom.
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Re: Jackplate or 4-blade prop? Or both?
[Re: steve@S2Marine]
#12530224
12/07/17 04:44 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
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usually not.. but sometimes you won't know till you yank the motor off the transom. Kinda what I was thinking. Thank you sir
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