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Max Online: 36273 @ 01/23/13 02:34 PM
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#11757687 - 08/03/16 09:04 PM Prop question
2-chip Online   content
Outdoorsman

Registered: 06/28/16
Posts: 28
I have a Lazer II 21p ss prop on a Mercury Opti 115. I bought a Merc 125 Opti that was on a Blue Wave 20' center console. It has a really low pitch. The seller thinks its a 13p? I am just looking for a better hole shot and don't really want/need a lot of top speed. What would be optimal setup? I have a 2006 Nitro 482, it's 18'9".

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#11757857 - 08/03/16 10:51 PM Re: Prop question [Re: 2-chip]
Pat Goff Offline
TFF Team Angler

Registered: 01/29/05
Posts: 4986
Loc: Marble Falls/Seadrift
Good questions, not enough details.
Your opti is a hard motor to prop, it's power curve is narrow and it's pretty gutless on the low end, sorry to say.

AND...it's got a hard rev limiter at 5,700 rpms, you don't want to hear that thing screaming at you all the time, so the details you'll need to share: Whats your current rpms with the lazer at WFO? THAT number will say what you really need to be running. It won't be that 13, not gonna work at all.
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Pat Goff
Marble Falls/Seadrift TX

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#11757893 - 08/03/16 11:28 PM Re: Prop question [Re: 2-chip]
bronco71 Offline
Extreme Angler

Registered: 02/05/06
Posts: 1049
Loc: Farmers Branch/Sulphur Bluff
I would try that 21p Laser II on the 125 before I would do any thing else, use that as a starting point to get WOT rpm and holeshot info and dial in from there....that prop might be able to be tuned to work.


Edited by bronco71 (08/03/16 11:29 PM)

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#11758029 - 08/04/16 07:12 AM Re: Prop question [Re: 2-chip]
Bob Landry Online   content
Extreme Angler

Registered: 08/10/11
Posts: 2015
Loc: Austin, Tx
If the prop is not marked, take it to a shop and let them tell you what it is. If you don't know what you got, you don't kow what you need and you can guess till the cows come home, throw props at it trying to get it right, and end result is that someone will have made a lot of money selling you props and you will still be trying to get your boat to run at it's optimum.
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2015 Seaark 1872 MV CC Etec-90
Helix 12 CHIRP SI, HB 1199, MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic

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#11758125 - 08/04/16 08:22 AM Re: Prop question [Re: 2-chip]
2-chip Online   content
Outdoorsman

Registered: 06/28/16
Posts: 28
Thanks guys!

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#11758428 - 08/04/16 11:14 AM Re: Prop question [Re: Pat Goff]
2-chip Online   content
Outdoorsman

Registered: 06/28/16
Posts: 28
Thanks,
Won't have the 125 on until Monday. I'll get that info after i drive it. Probably have the 21p put on when we do the motor swap...

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#11760711 - 08/05/16 04:46 PM Re: Prop question [Re: 2-chip]
Team Brown Stripe Offline
Extreme Angler

Registered: 04/25/07
Posts: 2159
Loc: Carrollton, Texas
Did you do a compression test on that 125? 13 pitch sounds really low almost like it might be covering up a weak cylinder.
_________________________
Youtube video of my tired old fishin motor on the Dyno thumb
https://www.youtube.com/watch?v=RiI-UfMEUw0
www.XtremeMarine.us



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#11761944 - 08/06/16 03:06 PM Re: Prop question [Re: 2-chip]
Pat Goff Offline
TFF Team Angler

Registered: 01/29/05
Posts: 4986
Loc: Marble Falls/Seadrift
Not really. A 13 heavy cup flats prop would be about right for that blue wave.
_________________________
Pat Goff
Marble Falls/Seadrift TX

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#11767981 - 08/09/16 04:30 PM Re: Prop question [Re: 2-chip]
Team Brown Stripe Offline
Extreme Angler

Registered: 04/25/07
Posts: 2159
Loc: Carrollton, Texas
thumb
_________________________
Youtube video of my tired old fishin motor on the Dyno thumb
https://www.youtube.com/watch?v=RiI-UfMEUw0
www.XtremeMarine.us



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