twin motors setup

[Campbell Sims 1Participant @campbellsims1]

polarity

[Campbell Sims 1Participant @campbellsims1]

Is there any reason apart for ease of wiring why the negative terminals on the motors should be adjacent to each other?

[Dave MilbournParticipant @davemilbourn48782]

As far as I know it doesn't make any difference, Campbell. Many DC motors don't even have their polarity marked.
Dave M

[Malcolm FraryParticipant @malcolmfrary95515]

In the eyes of some, it makes the wiring look prettier.

Motors thay have a red dot near one terminal just give a clue as to which way you can expect them to turn. As a f'rinstance, using two motors in parallel off one ESC and they are required to counter rotate, you avoid connecting red to red.

[S MParticipant @sm83187]

Its actually much simpler, boat motors are small market and the largest market most people will know about is robotics which takes many forms.

You build one motor to a standard specification and it can have variables, if it is going to the robotics or medical markets it may have a marking on it and the good old robotic humans assembling them are little more than trained monkeys and they asselble them in a specific way using markings or symbols instead of langage as a motor mounted to a specific dot. This means that every motor turns the same way and with the same speed and torque output and they save many man hours assembling sub assembleis, and if they have the fixed, sprung loaded connections many now use then they simply push the sprung loaded termnals on and they lock.

[larry HustonParticipant @larryhuston62884]

Help! I'm building an old Lindberg PT 109 for my grandson. I build planes & gliders but I lack the elec. knowledge in motoring dept. I have Two tazer 380 brush motors installed that I want to run concentric. I have the proper shafts & props to do so. I also have two dynamite dyns2210 speed controls, one for each motor. I would also like to be able to reverse, stop or go forward each motor individually. Is there a switch that would switch polarity & have a neutral also. I realize I'll need a servo to operate each switch. sounds good huh. I could sure use some help with this. Anybody? Thanks B.H.P.

[Dave MilbournParticipant @davemilbourn48782]

Larry
You already have the means to do this i.e. the two speed controllers. According to what I've found out about the Dynamite Dyns 2210, it has forward-and-reverse function.
I suggest you go to this link **LINK** and click on the article "Do they both go round, mister?" It describes the different ways of controlling twin motors and, in particular, shows a diagram for what we call "tank steering". That's what you're after. Do note that you will need a four-channel transmitter with two dual axis sticks to achieve this.
Dave M

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