Thread: possibly a stupid question...

Originally Posted by mrwillis

OK...a couple more questions. What is the benefit of the 24V over the 12V? Isn't 50lb thrust, still 50lb of thrust whether is is off 12V or 24V? Is it just the idea of conserving battery power?

Going with a higher voltage has two main advantages: The first is that the two batteries give you double the run time at the same thrust. The second, and biggest advantage is that a 24V motor draws half the current of a 12V motor at the same thrust, which means that the motor wiring can be smaller and you get less power lost to heat while you are running.

IMO, 24V is the way to go unless the lowest speed on the 24V is too fast for you. I have a 12/24 motor and never run it on 12V.

Whatever you do....do NOT try to make a 24 V system out of the two batteries you have!! Your big motor is only 12V and like others have said, if you put 24V on some of those systems, or your electronics, you will soon find yourself facing a very large repair bill. The two systems have to be kept seperate, so if you want 24V, you will have to have another battery to go with the TM battery you already have....please do a lot of research before you plug anything new in.

Originally Posted by vic n

Whatever you do....do NOT try to make a 24 V system out of the two batteries you have!! Your big motor is only 12V and like others have said, if you put 24V on some of those systems, or your electronics, you will soon find yourself facing a very large repair bill. The two systems have to be kept seperate, so if you want 24V, you will have to have another battery to go with the TM battery you already have....please do a lot of research before you plug anything new in.

It is simple to get 12V out of a two battery system with no risk of applying 24V to the motor or electronics. Connecting a second battery to one end of the engine battery doesn't affect the engine battery at all.

Originally Posted by CatFan

It is simple to get 12V out of a two battery system with no risk of applying 24V to the motor or electronics. Connecting a second battery to one end of the engine battery doesn't affect the engine battery at all.

Oh sure...I've done it several times....I just wanted to caution him not to try to create a 24V system with his starting battery and his TM battery, because that would feed the 24V to his big motor and electronics.

Originally Posted by mrwillis

Isn't 50lb thrust, still 50lb of thrust whether is is off 12V or 24V?

Yes, but you don't get maximum thrust as your battery runs down. By the end of the day you're limping along at a fraction of the speed you got when you started. By doubling the power, you double the time before you're limping along.

my dads boat is a 18 foot lund with a 55lb 24v. and my buddys 17 foot semi v john has a 55 lb 12v. my dads will hold in twice the wind and last twice as long. i refuse to go with my buddy on windier days because his wont hold as good as mine or dads. youd be better off going with the 24v. you will not be disappointed