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Author Topic:   Trolling Motor Thrust Needed for 19-Foot Boat
Scott Grey posted 02-06-2007 04:09 PM ET (US)   Profile for Scott Grey   Send Email to Scott Grey  
I want to add a trolling motor to the stern for fishing the intracoastal. Not sure what thrust to use for a 190 OUTRAGE. I would like to keep it a 12 volt system if possible and around 50-55 lbs. of thrust so the battery will fit under rear removable seat. I am not using [the trolling motor] to fish any tournaments, just some weekend fishing. Would 50-55 lbs. of thrust be enough?
jimh posted 02-06-2007 08:52 PM ET (US)     Profile for jimh  Send Email to jimh     
It would be interesting to hear of any algorithm or relationship between boat length and trolling motor thrust. I have never seen any expression of this relationship. If there is a formula, I would very much like to see it and to understand the relationship it expresses. This is more of a PERFORMANCE question than an electrical one, but in as much as the motor is usually an electrical motor, let's proceed here in SMALL BOAT ELECTRICAL with this discussion. Thanks.
cwolf posted 02-06-2007 11:40 PM ET (US)     Profile for cwolf  Send Email to cwolf     
My bow mounted 24 volt Minn Kota w/ 65 lbs of thrust, pushes a classic Outrage 18 (which I'm pretty sure is lighter then the 190) around all day without any problem. IMHO I would consider this the minimum amount of thrust though and would have been looking for more if I hadn't got such a good deal.
hauptjm posted 02-07-2007 11:46 AM ET (US)     Profile for hauptjm    
I'm curious! Is there a specific reason why it has to be mounted on the transom versus the bow? It seems the best manuverability comes from the bow mount. Does the transom mount require more thrust than a bow mounted motor?
Scott Grey posted 02-10-2007 03:46 PM ET (US)     Profile for Scott Grey  Send Email to Scott Grey     
I don't think it will fit on the front of my boat due to bow rail, also i would like to take it off easily when not needed.
jschmidt63 posted 02-11-2007 12:19 AM ET (US)     Profile for jschmidt63  Send Email to jschmidt63     
19 is a big boat. I would think you may need to be in the 24 volt 65 lb thrust range. It also takes more power to push and control than push. I am in a similar dilema on my 17 katama. Want to keep my bow rail but a bow motor may require a cut. I currently use my 30 lb 12 volt since I dont have another motor at the moment. It really struggles but it moves it and barely swings it with handle clearance.


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