12/24
Is there still a big difference between 12v motors and 24v motors these days
If a 12v motor has 50# thrust And a 24v motor has 50# thrust How are they
different ? |
james
Jan 1
2005
|
| There's a world of difference between the two. While they both have 50
pounds of thrust, you'll find that a 24 volt system is more efficient and
will last you far longer on the water. I realize that improvements have been made in trolling motor technology, but
when I had a 12 volt system in my boat, the battery was done long before I
was in a day of fishing. If you have the room for the extra battery, get the 24 volt system, you'll
appreciate it on a windy day or in heavy current. |
Steve
Jan 1
|
| I definitely agree that a 24v motor is more efficient than a 12v motor. In
fact, if my math is correct, you can get by with smaller diameter wiring
because the amount of current being drawn should be half. However, when
comparing running times, it is not necessarily fair to say that a 24v system
will last longer. You are using two batteries rather than one. It should
last twice as long. Given that a 24v motor is probably more efficient, a
two battery 24v system will probably last a little longer than a two battery
12v system where you either have them hooked in parallel or swap one out to
maintain 12 volts. Jeff |
Jeff
Jan 1
|
| In the same way that an 18 volt drill is much better then a 9.6 volt drill.
A 24 volt motor will have much more torque then a 12 volt system.. It will
also last much longer between charges. |
Todd
Jan 1
|
| I had the very same experience with my old 12v before switching to 24v. Well
worth the $$$ Chris S. |
Chris
Jan 1
|
| A 24 volt system only uses half the current to do the same job as a 12 volt
system, a 36 volt system uses 1/3 the current. |
sphipps1709
Jan 1
|
| So a 24 volt system only needs 12 volts to do the same job as a 12 volt
sytem? Hmmm.... |
Todd
Jan 2
|
| That is correct. If a trolling motor draws 30 amps at 12v for a certain
thrust, a 24v system will only draw 15 amps for the same amount of thrust.
This is hypothetical. In practice, it will be slightly different. That's
the advantage of a gas dryer using 240 volts rather than 120 volts in that
the amount of current will be half. Jeff |
Jeff
Jan 1
|
| If I had a good 12 volt motor that was strong enough and in good shape, but I
wanted more battery life, I would keep the motor, add a second battery in
parallel to the first and double the time it would run.
Ronnie
fishing.guide@about.com
http://fishing.about.com |
rgarri7470
Jan 2
|
| At least that's what I'm doing... for a little while longer. |
Charles
Jan 2
|
| And the reason that air-conditioner compressors use 240 volts instead of
120. Less current equals lower electrical bills, and more efficiency. |
Charles
Jan 2
|
| I thought gas driers used gas.<G> But hes,, same amount of work to be done, twice the voltage = half the
current draw. But the WATTAGE will be the same. It won't affect yo9ur
electric bill, but all the wires can be thinner, etc. As regard the question that started this thread though, in a small boat,
if I was going to have a 50 pound thrust trolling motor, I'd use a 12
volt 50 pound motor (as a matter of fact, I do exactly that). Why would
I want the extra 60-plus pounds of the second battery in the boat? If I
have to, I can fish for 2 days off a full charge on one group 29 marine
battery and not feel ANY reduction in power. If I was running a boat
that would benefit from 70-plus pounds, I'd go to 24V in a new york
minute. But not in a boat that works fine with 50. |
RichZ
Jan 2
|
| I think you missed the point of my post. The post I mentioned mentioned that
a 24 volt system was twice as much as a 12 volt system. I thought that a
little obvious. But it's no longer funny when this is pointed out. :) |
Todd
Jan 3
|
| Todd, Current and Voltage are not the same thing. Think of voltage as the
rate of flow in terms of speed. Current is the power behind the flow. Say a Mack truck is moving at 5 mph and it hits your car...disaster If a bicycle hits your car at 5 mph..then there is a scratch. Thats the
diff between current and voltage!
BD |
Bill
Jan 4
|
| Hey... I didn't say it. |
Todd
Jan 4
|
| > |
pat
Jan 4
|
| Doh!!! I cannot believe I said gas dryer. I meant electric. Jeff |
Jeff
Jan 4
|
| I agree with your advice, though from a different persepctive. 1 single 12v
battery on a 12v troller can definitely give out if one fishes a full day in
my experience. But rather than the expense of a new motor AND an extra
battery, for now I just added a second battery. I put in a Perko 2 battery
selector switch and have 2 full 12v batteries to use over a day's worth of
fishing with my 12v troller. I've used them one at a time, and I've used
them both at once, in parallel of course, and either way they seem to last
equally as long, all day typically, with neither getting too deeply
discharged. I do agree the 24v systems are likely more efficient, but even with a 12v
motor, a second deep cycle battery (if you can fit one onboard) can still be
a good thing until you're ready to upgrade to a nice 24v motor. |
SimRacer
Jan 4
|
