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Jan 23rd, 2013
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prop #12566014
01/06/18 03:33 AM
01/06/18 03:33 AM
Joined: Nov 2008
Posts: 4,581
crowley
C
coachallentca Online content OP
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crowley
I have a 18'8 bass boat and I am running a Turbo 1. My RPM's are 5000 and my top speed is 55mph. I have a great hole shot. My question is my rpm's are low. What can I do to get them up. I have a manual jackplate. Also would it better to go down to a 21p prop? Please if any can help if you can...


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Re: prop [Re: coachallentca] #12566178
01/06/18 11:30 AM
01/06/18 11:30 AM
Joined: May 2003
Posts: 11,496
Littlefield Tx & Lake A. H. US...
gary purdy Offline
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gary purdy  Offline
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Littlefield Tx & Lake A. H. US...
What boat and motor? First thing I always check is the throttle activation. Is it going to full throttle? If that checks out I would check out Steves custom props on setting up motor height.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: prop [Re: coachallentca] #12566287
01/06/18 02:50 PM
01/06/18 02:50 PM
Joined: Dec 2002
Posts: 3,665
Rockwall, TX USA
Tommy Yetts Offline
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Most outboards need to be turning at least 5500 rpms WOT. Check what Gary mentioned and make sure your tach is accurate.


Rockwall Marine
Tommy Yetts

www.rockwallmarine.com
Re: prop [Re: coachallentca] #12566325
01/06/18 03:26 PM
01/06/18 03:26 PM
Joined: Nov 2008
Posts: 4,581
crowley
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coachallentca Online content OP
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crowley
sorry it's a Mercy 150 EFI. Oh and the water pressure is around 12 to 15.

Last edited by coachallentca; 01/06/18 03:28 PM.

Media Tournament Director Northeast Division
Re: prop [Re: coachallentca] #12566372
01/06/18 04:13 PM
01/06/18 04:13 PM
Joined: Jan 2005
Posts: 6,053
Seadrift TX
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Pat Goff Online content
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Details.
What boat?
Jack plate?
What kind of load?
Better the details the better the answer.


Pat Goff
Seadrift TX
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Re: prop [Re: coachallentca] #12566566
01/06/18 09:23 PM
01/06/18 09:23 PM
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crowley
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it's a cobra bass boat and its has a manual jack plate I run two people about 325 lbs. 3 trolling motors batteries and one starting battery.


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Re: prop [Re: coachallentca] #12566574
01/06/18 09:30 PM
01/06/18 09:30 PM
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Seadrift TX
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Raising your motor will increase rpms.
You can go up 1/4” at a time until you lose speed, lift or water pressure. Then back one click and you’ll know where that prop can run.
All that said turbo is still a turd. If you want potential it’ll come from a 23 Yamaha M or merc tempest of the same pitch.

I’d lean to the M a bit more.

Proper boat setup takes time.


Pat Goff
Seadrift TX
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Re: prop [Re: coachallentca] #12566633
01/06/18 10:50 PM
01/06/18 10:50 PM
Joined: Nov 2008
Posts: 4,581
crowley
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Thanks Pat..


Media Tournament Director Northeast Division
Re: prop [Re: coachallentca] #12567279
01/07/18 02:49 PM
01/07/18 02:49 PM
Joined: Dec 2014
Posts: 1,664
Euless
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What pitch is the prop you are running? My 150 EFI on my 18.5 ft Avalanche boat does best with a 21" Trophy 4 blade.
3X better hole shot that the 23" Tempest it came with and 2-3 mph more on top end at 5500rpm.
The Tracker Avalanche is a heavy boat. Tops out around 3000 lb with 2 people and full tank.


From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."

Then He made the earth round...and He laughed and laughed and laughed!

Re: prop [Re: coachallentca] #12567314
01/07/18 03:15 PM
01/07/18 03:15 PM
Joined: Jan 2005
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Seadrift TX
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Avalanche is a different critter. Actually every avalanche is different. I've had the joy of setting up three of them and all three needed different setups/props/plates/accessories.


Pat Goff
Seadrift TX
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Re: prop [Re: coachallentca] #12568114
01/08/18 01:21 AM
01/08/18 01:21 AM
Joined: Nov 2012
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Emory
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Listen to Pat


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Re: prop [Re: coachallentca] #12568664
01/08/18 03:17 PM
01/08/18 03:17 PM
Joined: May 2003
Posts: 11,496
Littlefield Tx & Lake A. H. US...
gary purdy Offline
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Hard to compare any 2 boats or motors. Some just simply run better than others. Even 2 props with the same pitch will be different. Different props can require a different motor height.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: prop [Re: coachallentca] #12568711
01/08/18 03:47 PM
01/08/18 03:47 PM
Joined: Jan 2005
Posts: 6,053
Seadrift TX
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I was trying to be kind to an avalanche owner, it's one of those looks good on paper type hulls.
The three we setup were all different, one had 6 degrees negative angle on the transom, one had five degrees positive transom angle, and one that was the biggest pain to subdue had a 3" rocker in the hull.

Like Gary said, no two anything are identical. All you can do is start here and figure out where to go from there.


Pat Goff
Seadrift TX
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Re: prop [Re: Pat Goff] #12569271
01/08/18 09:39 PM
01/08/18 09:39 PM
Joined: Dec 2014
Posts: 1,664
Euless
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Muzzlebrake Offline
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Originally Posted By: Pat Goff
I was trying to be kind to an avalanche owner, it's one of those looks good on paper type hulls.
The three we setup were all different, one had 6 degrees negative angle on the transom, one had five degrees positive transom angle, and one that was the biggest pain to subdue had a 3" rocker in the hull.

Like Gary said, no two anything are identical. All you can do is start here and figure out where to go from there.



I guess I lucked out. Mine is flat like the earth:) Runs 60 GPS with no jack plate.


From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."

Then He made the earth round...and He laughed and laughed and laughed!

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