View Full Version : Trolling Motor power
OldBay
06-24-2004, 11:29 AM
How do the thrust ratings (pounds of thurst) translate into horsepower?
A 43 lb thrust trolling motor would be roughly equivalent to what HP outboard? 2hp? 1hp? 1/2 hp?
wizardude
06-25-2004, 04:05 PM
I'd say the 43lb is around 1/2 HP
OldBay
06-28-2004, 11:03 AM
I will have to look into this a little more. Looking to "power" a dingy for the reservoir. :D
Bassomatic76
06-29-2004, 06:10 PM
Here is a link that has some info:
http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=006933
1 ft-lb thrust draws 1 amp.
The approximate formula is watts = (Amps X Voltage X Efficiency)
Divide by 750 to get the horsepower.
750 watts = 1 hp
So a 43 ft-lb thrust motor using a 12 volt battery is equal to 0.65 hp assuming 95% engine efficiency.
OldBay
07-01-2004, 10:08 AM
Good work Math-a-Magician!! So a 60lb thrust is just about one horse. Sounds good.
OBXFOOL
07-13-2004, 02:12 PM
Old Bay, I move 2800 lbs of boat at a good speed for bassing with a 53 lb thrust 12 volt unit.
With it on 3 or 4(has 5 speeds) I can move along for about 6 hours on my deep cycle.
Check Walmart at the end of the season---got mine there half price on clearance.
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