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#2898894 - 08/07/12 10:12 AM Boat prop question
TeamMainStreet
10 Point


Registered: 08/30/07
Posts: 2629
Loc: Union County,Tn

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I have a friend that has a Bullet 20XD with comp hull that has a 225 Merc on it. It had a 25 pitch prop on it and with 2 people and a fishing load would run around 75 ish with decent hole shot. He has went to a 26 4 blade trophy prop and has a weak holeshot and loss of top end (68 mph). He tryed the 26 with the jackplate in the same position as the 25 and 1/4" below pad with poor results. My question is, which way should he be going with the jplate?
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#2898911 - 08/07/12 10:31 AM Re: Boat prop question [Re: TeamMainStreet]
Happy Birthday SES
8 Point


Registered: 10/13/11
Posts: 1313
Loc: Corryton, Tn

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For top end speed, the higher the better. I'd move it up to even with the pad. Only one way to tell though. Move it, run it...
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#2898933 - 08/07/12 11:02 AM Re: Boat prop question [Re: SES]
TeamMainStreet
10 Point


Registered: 08/30/07
Posts: 2629
Loc: Union County,Tn

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He has moved it up to 1/4" above the pad but has not got to test and tune yet.
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#2898949 - 08/07/12 11:22 AM Re: Boat prop question [Re: TeamMainStreet]
Dbllunger
12 Point


Registered: 12/08/04
Posts: 5100
Loc: Middle Tennessee

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Is he racing or fishing?? Whats the hurry, stop and smell the roses......75 mph on the water would plain out scare me.

I get a solid 28mph out of my 25hp Johnson.....sometimes I almost have to turn my hat backwards \:\)
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#2898979 - 08/07/12 12:03 PM Re: Boat prop question [Re: Dbllunger]
CATCHDAWG
10 Point


Registered: 04/02/04
Posts: 3956
Loc: Bradley co. TN

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 Originally Posted By: Dbllunger
Is he racing or fishing?? Whats the hurry, stop and smell the roses......75 mph on the water would plain out scare me.

I get a solid 28mph out of my 25hp Johnson.....sometimes I almost have to turn my hat backwards \:\)
Got a buddy that has a 98mph bullet, fished with him ONE time! I don't drive that fast on the interstate, scared the crap out me!!!
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#2899007 - 08/07/12 12:32 PM Re: Boat prop question [Re: Dbllunger]
TeamMainStreet
10 Point


Registered: 08/30/07
Posts: 2629
Loc: Union County,Tn

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 Originally Posted By: Dbllunger
Is he racing or fishing?? Whats the hurry, stop and smell the roses......75 mph on the water would plain out scare me.

I get a solid 28mph out of my 25hp Johnson.....sometimes I almost have to turn my hat backwards \:\)



Either, Or depending on who is around.\:\) No point in having a 55 mph drag car. If it is capable of 80+ id want it to be able to do it. Go big or go home. Na fishin with a crash helment on aint much fun but a toy is a toy
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The work is mighty hard out in the gravel yard. I'll never be a free man so they say

Dont tread on me



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#2899009 - 08/07/12 12:33 PM Re: Boat prop question [Re: TeamMainStreet]
TeamMainStreet
10 Point


Registered: 08/30/07
Posts: 2629
Loc: Union County,Tn

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No joke though should he be moving the jack plate up or what?
_________________________
The work is mighty hard out in the gravel yard. I'll never be a free man so they say

Dont tread on me



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#2899791 - 08/08/12 06:11 AM Re: Boat prop question [Re: TeamMainStreet]
SilverFox
12 Point


Registered: 10/16/10
Posts: 5418
Loc: Kodak TN

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The Bullet 21 CC with the 300 stock motor is running 117 mph... But not with me in it. LOL. Im not a speed boater and have no information other than that. Good luck holding on.
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#2899803 - 08/08/12 06:24 AM Re: Boat prop question [Re: SilverFox]
Mudbone
10 Point


Registered: 10/24/11
Posts: 3764
Loc: Old hickory Tn

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Go back to the three blade. Or a different three blade. A 26 chopper will get him out of the hole better and add top end. I'm no expert but my experiences with four blade props ain't been good. Takes to long to get rpms up. He probly has the Jp in the right spot just not enough power to spin it. Buddy just went with a four blade trophy on a 200 Merc (24p) on a 19'6 hydra sports and had the same results. Went to a three blade chopper in a 25 and it was off to the races!
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#2900538 - 08/08/12 03:59 PM Re: Boat prop question [Re: ]
Dbllunger
12 Point


Registered: 12/08/04
Posts: 5100
Loc: Middle Tennessee

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 Originally Posted By: Swamphunter
 Originally Posted By: Dbllunger
Is he racing or fishing?? Whats the hurry, stop and smell the roses


It's about getting the most out of your investment. My boat will only run 55MPH but I tested enough props and jackplate positions to know I am maxed out.

Would you drive your truck around with a vacuum leak making it burn more fuel with less performance? Of course not. Same principle.



No but I also don't drive my truck around with the pedal to the floor either.......not really the same principal. I was just teasing with the fellar. If he is like Ricky Bobby and just wants to go fast, then have fun and do it. \:\)
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#2900545 - 08/08/12 04:05 PM Re: Boat prop question [Re: Dbllunger]
Baxter83
Good ol' Boys
12 Point


Registered: 09/03/08
Posts: 7305
Loc: Winchester, TN

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Go back with the 3 blade. Hole shot will be slower, but will gain back the top end. That's just the nature of the beast..
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#2900739 - 08/08/12 07:17 PM Re: Boat prop question [Re: ]
Happy Birthday SES
8 Point


Registered: 10/13/11
Posts: 1313
Loc: Corryton, Tn

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 Originally Posted By: Swamphunter
Go over to BassBoatCentral.com and check into it. There are a lot of sharp Bullet guys there. Probably even someone with the same set up that has tried everything out there prop/set up wise.
x10.

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#2900871 - 08/08/12 08:28 PM Re: Boat prop question [Re: SES]
TeamMainStreet
10 Point


Registered: 08/30/07
Posts: 2629
Loc: Union County,Tn

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Just to clarify, his original prop was a 4 blade also instead of a 3 like I had originally thought. He went from a 25p 4 blade to a 26p 4 blade. He ran it yesturday after moving the jp up and he got quiet a bit of top end back(73 mph) but is still blowing out pretty bad on takeoff. He is also throwing a tail about as tall as the cowl on the motor. I will check that website out guys. Thanks for that.
_________________________
The work is mighty hard out in the gravel yard. I'll never be a free man so they say

Dont tread on me



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#2901532 - 08/09/12 11:09 AM Re: Boat prop question [Re: TeamMainStreet]
Winchester
Non-Typical


Registered: 12/05/03
Posts: 27878
Loc: TN

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Sounds like he has too much prop now, as raising the motor to help top end will likely hurt his holeshot and cause blowout!
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#2901666 - 08/09/12 01:08 PM Re: Boat prop question [Re: Winchester]
jfarm65
4 Point


Registered: 09/03/07
Posts: 132
Loc: wilson county tennessee

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The most important question is rpms. How many is he turning with his current set up at WOT?
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#2902083 - 08/09/12 08:02 PM Re: Boat prop question [Re: jfarm65]
TAFT McC
4 Point


Registered: 09/24/09
Posts: 169
Loc: wayne,tn

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Opti or Pro max merc n does it have low water? If it does keep jacking. Brand of prop makes as much difference as pitch,they all have there own personality no 2 are alike.
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