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#11663820 - 06/13/16 09:54 AM How to get best top speed
Chris_K Offline
Extreme Angler

Registered: 01/14/15
Posts: 1160
Loc: TX
I have a 96 basscat jaguar with mercury 225 efi. 3 blade 25 temptist prop. To get max top speed (70mph), I have to give it all the up trim I have and my rooster tail is shooting just about straight up. Does that sound correct?

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#11663844 - 06/13/16 10:02 AM Re: How to get best top speed [Re: Chris_K]
Scuppernong Offline
Outdoorsman

Registered: 11/17/14
Posts: 50
Loc: East Texas
I have always heard that if your rooster tail is shooting up that you are losing thrust, because it's just wasting it by throwing the water upward. I'm no expert so I don't know, that's just what I have heard, therefore, my two cents.
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Harley Riding Hawg Hunter!

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#11664069 - 06/13/16 11:20 AM Re: How to get best top speed [Re: Chris_K]
eggs'isled Offline
Extreme Angler

Registered: 07/10/09
Posts: 1628
yeah, you don't want much rooster tail..if your running a chopper propeller jacked to the max then I can see a big rooster but not our bass setups...jet a jack plate and a water pressure gauge, put all your heavy tackle in the back of the boat and just run it till you have it tuned - note in the summer temps your not going to see big numbers, you will only get to tune it for summer now...good luck !

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#11664115 - 06/13/16 11:34 AM Re: How to get best top speed [Re: Chris_K]
Mike_Soriano™ Offline
TFF Celebrity

Registered: 06/08/08
Posts: 5434
Loc: FORK
Trim up and throttle down. cheers
_________________________
www.XciteBaits.com
www.Daiwa.com


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#11664184 - 06/13/16 11:57 AM Re: How to get best top speed [Re: Chris_K]
9094 Offline
TFF Celebrity

Registered: 08/11/09
Posts: 6900
Loc: Albany
Rooster tail should be no higher than top of motor in most cases.

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#11664227 - 06/13/16 12:12 PM Re: How to get best top speed [Re: Chris_K]
danwill12 Offline
Angler

Registered: 05/30/14
Posts: 333
Loc: Florida
Chris, The very best place to post this is in the Bass Cat Boat .com find the Owners section and fire away. I know they the 'guys' over there are going to ask a ton of questions. Such as , Most recent Tune up, Compression on all 6 cly's, the real condition of your prop. How much weight do you tote? What speed have you reached, and how have you measured it? What condition is your hull and the kell and the pad ? Just to get you warmed up... Oh yeah, do you drag poles behind you?

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#11664262 - 06/13/16 12:25 PM Re: How to get best top speed [Re: Chris_K]
Ken A. Offline
TFF Celebrity

Registered: 10/02/06
Posts: 8311
Loc: Trophy Club, TX
Originally Posted By: Chris_K
I have a 96 basscat jaguar with mercury 225 efi. 3 blade 25 temptist prop. To get max top speed (70mph), I have to give it all the up trim I have and my rooster tail is shooting just about straight up. Does that sound correct?


The best answer here is Maybe...

With that boat & motor, 70 is not bad at all. Typically if you are shooting a big roostertail straight up off the back of the boat, you are experiencing a lot of prop slippage but still 70 is nothing to sneeze at with a boat that size with a 225.

It all depends on your load. Your engine may be a little high for the load you currently have. Unless you have a hydraulic jackplate it will be hard to adjust to get it just perfect. The more weight you have in the boat, the deeper you have to have your prop in the water to lift it. Simple as that.

Also as a general rule of thumb, a 4 blade prop will carry a heavy load better than a three blade but the 3 blade will be faster with a light load. If you have the CMC manual jackplate that most BC's have you will need to do do some experimenting if you want to get the optimum top speed from your setup.

As one of the other guys mentioned above, try to put as much of the weight in your boat in the rear storage. Moving weight to the rear of your boat can add as much as 5 mph to you topspeed. Just know that the more weight you have in the rear of the boat, the slower the holeshot too. It is like a water balloon. You squeeze one end and it gets smaller while the other end gets bigger.

At the end of the day, you have to select a prop that is a good middle of the road prop. I run a 25 Fury on my boat for the best day in-day out performance. Yes, my boat is slightly faster in the cooler months with a 26 Fury but when the weather is hot & humid, it won't turn it. It's just too much pitch for the motor.

Hope that helps.


Edited by Ken A. (06/13/16 12:26 PM)

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#11664269 - 06/13/16 12:29 PM Re: How to get best top speed [Re: Chris_K]
steve@hydrodynamics Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6728
Loc: Quitman,Tx
8" jack plate.
get the tempest cupped,etc.
set it at 3.25" below pad and let er rip.

a 4 blade will handle better on that boat, but it won't load on the trailer worth a
flip. it'll bog badly.
_________________________
www.hydrodynamics-usa.com
903-763-5225





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#11664323 - 06/13/16 12:50 PM Re: How to get best top speed [Re: Chris_K]
Ken A. Offline
TFF Celebrity

Registered: 10/02/06
Posts: 8311
Loc: Trophy Club, TX
Hey Steve,

Remember that old TXP I had you drill out for me trying to get it to ventilate on my Merc 300?

When we were done it looked like swiss cheese! roflmao

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#11664461 - 06/13/16 01:47 PM Re: How to get best top speed [Re: steve@hydrodynamics]
Chris_K Offline
Extreme Angler

Registered: 01/14/15
Posts: 1160
Loc: TX
Originally Posted By: steve@scp
8" jack plate.
get the tempest cupped,etc.
set it at 3.25" below pad and let er rip.

a 4 blade will handle better on that boat, but it won't load on the trailer worth a
flip. it'll bog badly.

thanks for the info! Ive got the jackplate. Will someone explain how to measure the below pad part of it? Thanks in advance

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#11664481 - 06/13/16 01:53 PM Re: How to get best top speed [Re: Ken A.]
Chris_K Offline
Extreme Angler

Registered: 01/14/15
Posts: 1160
Loc: TX
Originally Posted By: Ken A.
Originally Posted By: Chris_K
I have a 96 basscat jaguar with mercury 225 efi. 3 blade 25 temptist prop. To get max top speed (70mph), I have to give it all the up trim I have and my rooster tail is shooting just about straight up. Does that sound correct?


The best answer here is Maybe...

With that boat & motor, 70 is not bad at all. Typically if you are shooting a big roostertail straight up off the back of the boat, you are experiencing a lot of prop slippage but still 70 is nothing to sneeze at with a boat that size with a 225.

It all depends on your load. Your engine may be a little high for the load you currently have. Unless you have a hydraulic jackplate it will be hard to adjust to get it just perfect. The more weight you have in the boat, the deeper you have to have your prop in the water to lift it. Simple as that.

Also as a general rule of thumb, a 4 blade prop will carry a heavy load better than a three blade but the 3 blade will be faster with a light load. If you have the CMC manual jackplate that most BC's have you will need to do do some experimenting if you want to get the optimum top speed from your setup.

As one of the other guys mentioned above, try to put as much of the weight in your boat in the rear storage. Moving weight to the rear of your boat can add as much as 5 mph to you topspeed. Just know that the more weight you have in the rear of the boat, the slower the holeshot too. It is like a water balloon. You squeeze one end and it gets smaller while the other end gets bigger.

At the end of the day, you have to select a prop that is a good middle of the road prop. I run a 25 Fury on my boat for the best day in-day out performance. Yes, my boat is slightly faster in the cooler months with a 26 Fury but when the weather is hot & humid, it won't turn it. It's just too much pitch for the motor.

Hope that helps.

Thank you. Appreciate the response.

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#11665609 - 06/13/16 09:27 PM Re: How to get best top speed [Re: Chris_K]
StormVet Offline
Outdoorsman

Registered: 01/16/12
Posts: 164
Loc: East Texas
you need to join bassboatcentral. Com. Then go to bass boat set ups. Look under the sticky section for prop to pad measurement. They have pics and all info on water pressure prop height and speed.

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#11665749 - 06/13/16 10:23 PM Re: How to get best top speed [Re: Chris_K]
ETxRT Offline
Outdoorsman

Registered: 07/01/10
Posts: 156
Loc: E TX

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#11665983 - 06/14/16 07:11 AM Re: How to get best top speed [Re: Ken A.]
steve@hydrodynamics Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6728
Loc: Quitman,Tx
Originally Posted By: Ken A.
Hey Steve,

Remember that old TXP I had you drill out for me trying to get it to ventilate on my Merc 300?

When we were done it looked like swiss cheese! roflmao


i sure do Ken. that prop worked great on that lil bullet too.
_________________________
www.hydrodynamics-usa.com
903-763-5225





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#11665985 - 06/14/16 07:13 AM Re: How to get best top speed [Re: Chris_K]
steve@hydrodynamics Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6728
Loc: Quitman,Tx
Originally Posted By: Chris_K
Originally Posted By: steve@scp
8" jack plate.
get the tempest cupped,etc.
set it at 3.25" below pad and let er rip.

a 4 blade will handle better on that boat, but it won't load on the trailer worth a
flip. it'll bog badly.

thanks for the info! Ive got the jackplate. Will someone explain how to measure the below pad part of it? Thanks in advance


are you sure it's an 8" setback? the factory plate was only a 6" plate. if it is a 6, then i have 2" spacers
here at the shop. it'll make a big difference in hole shot and top end. done it many times.
i can install them here too.
_________________________
www.hydrodynamics-usa.com
903-763-5225





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