The Minn Kota 4HP series has been around a long time. 4HP is the
motor's model name, not a horsepower rating. Darn misleading of
them, In my opinion. (What did they say the justification was?
Lemme see....been 10+ years since I talked to a factory tech about this, but I
seem to recall they were claiming it put out "as much thrust as" a 4 hosepower
gasoline outboard? Hmmm.....if that's what they were saying, that claim
could be debatable, too.)
But yeah, they're 65# thrust and 24 VDC. That's the motor we
first ran in the NAUTILUS. Custom setup. I made the
extended leads (from the batteries to the controller and then back out to the
motor) too long and too thin; never did get full thrust out of it. My
bad. A pretty good motor if set up properly, though.
Sent: Monday, July 01, 2002 6:22 AM
Subject: Re: Re: [PSUBS-MAILIST] Electric
Motors
The motor is rated at 65 lbs of thrust and uses a variable
speed motor so amp draw varies from 0 to 38 amps at 24 VDC.
>
> From: "Herve" <caribsub@coqui.net>
> Date:
2002/07/01 Mon AM 10:10:56 EDT
> To: <personal_submersibles@psubs.org>
>
Subject: Re: [PSUBS-MAILIST] Electric Motors
>
> Check with your
motor specs, but for 4HP at 24 volts, the motor would drain 120 Amps !
>
remember power at the screw can not be more than electric power at the
input.
> Minn kota is always misleading with the power of their
engine
> "puissance restituee < puissance consommee", i d ont know
fow to say that in english
> Herve
> ----- Original
Message -----
> From: SubMark@aol.com
>
To: personal_submersibles@psubs.org
> Sent: Monday, July
01, 2002 12:49 AM
> Subject: Re: [PSUBS-MAILIST] Electric
Motors
>
>
> Jacob, im using a 4 hp 65 lbs
thrust 24 volt minnkotta,I drilled and tapped the body filled it full of LPS
#4 which is like a wd/40 but its dialectric and i believe its not very
flamable its a very light solvent oil and then screwed on a 2.5" rubber pipe
plug siliconed the wires were they come out of the motor i put a kort
type nozzle or shroud around the prop.its still has around 50 # thrust x 4
motors i expect them to go to 34 ata's and push the boat at 3 knts and if i
wanted to go 6 knts the law of squares says i would need 16 motors. have anice
day
Mark
>
>
Roger June
REJ and
Company
rjune@fuse.net
513-300-1189
Check with your motor specs, but for 4HP at 24
volts, the motor would drain 120 Amps !
remember power at the screw can not be
more than electric power at the input.
Minn kota is always misleading with the power of
their engine
"puissance restituee < puissance consommee", i
d ont know fow to say that in english
Herve
----- Original Message -----
Sent: Monday, July 01, 2002 12:49
AM
Subject: Re: [PSUBS-MAILIST] Electric
Motors
Jacob, im using a 4
hp 65 lbs thrust 24 volt minnkotta,I drilled and tapped the body filled it
full of LPS #4 which is like a wd/40 but its dialectric and i believe its
not very flamable its a very light solvent oil and then screwed on a 2.5"
rubber pipe plug siliconed the wires were they come out of the motor i
put a kort type nozzle or shroud around the prop.its still has around 50 #
thrust x 4 motors i expect them to go to 34 ata's and push the boat at 3
knts and if i wanted to go 6 knts the law of squares says i would need 16
motors. have anice day
Mark