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Author Topic: twin motors/esc's.... help!  (Read 5095 times)

lozvik

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twin motors/esc's.... help!
« on: November 30, 2009, 06:38:25 PM »

help!  ive got twin motors and twin mtroniks esc's that will hopefully be running off one 6v sla battery, i have removed middle wire from one esc to rx and esc switch is in off position whilst the other one is on, I have power leads from both esc's that are going to one battery but one motor and esc is lifeless, does anyone know what i need to do so both motors and esc's work??  {:-{
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dougal99

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Re: twin motors/esc's.... help!
« Reply #1 on: November 30, 2009, 07:24:27 PM »

The ESC power switch controls the power supply to the ESC from the battery, if the switch is in the off position the ESC will not be powered and thus not drive the motor. Therefore you need to move both switches to the on position.
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lozvik

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Re: twin motors/esc's.... help!
« Reply #2 on: November 30, 2009, 07:38:59 PM »

The ESC power switch controls the power supply to the ESC from the battery, if the switch is in the off position the ESC will not be powered and thus not drive the motor. Therefore you need to move both switches to the on position.

ok that sounds obvious really, ive been told a few different things regarding this setup, so can i wire both escs to one on off switch, and do i still need to remove the middle wire to rx?
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DickyD

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Re: twin motors/esc's.... help!
« Reply #3 on: November 30, 2009, 07:41:03 PM »

Yes remove the middle wire from one esc
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lozvik

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Re: twin motors/esc's.... help!
« Reply #4 on: November 30, 2009, 07:43:31 PM »

Yes remove the middle wire from one esc

ok good, can i wire them both to a single switch?
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Martin [Admin]

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Re: twin motors/esc's.... help!
« Reply #5 on: November 30, 2009, 07:58:20 PM »

A single power switch?
Yes but obviously put the switch straight after the batter, before anything electronic.
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lozvik

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Re: twin motors/esc's.... help!
« Reply #6 on: November 30, 2009, 08:33:20 PM »

its all working inc the v tail mixer and looks like its going to do what i want great, ill let u know what happens when it hits water, lol
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HS93 (RIP)

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Re: twin motors/esc's.... help!
« Reply #7 on: November 30, 2009, 10:11:23 PM »

sorry my mistake over the switch on some controllers it switches the bec off (battery eliminator) but mtrinics must do it different I was trying to be double shore as well as taking the wire out, sorry about that.

peter
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lozvik

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Re: twin motors/esc's.... help!
« Reply #8 on: November 30, 2009, 10:17:05 PM »

no probs, i got there in the end, lol
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lozvik

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Re: twin motors/esc's.... help!
« Reply #9 on: December 01, 2009, 06:25:32 PM »

sorry about all these questions guys, everything is working ok except since adding the extra esc and v tail mixer one of the motors slowly spins, and trimming isnt really helping as it just makes the other one spin as well, any ideas anyone?  {:-{
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DickyD

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Re: twin motors/esc's.... help!
« Reply #10 on: December 01, 2009, 07:31:07 PM »

You have to trim both rudder and speed control
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lozvik

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Re: twin motors/esc's.... help!
« Reply #11 on: December 01, 2009, 08:38:36 PM »

yeh ive done both its being a bit temperamental, sometimes i switch it on and its ok and other times not
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lozvik

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Re: twin motors/esc's.... help!
« Reply #12 on: December 01, 2009, 09:19:47 PM »

well for some reason i cant get either motor to totally stop now even though ive trimmed them to max  {:-{
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DickyD

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Re: twin motors/esc's.... help!
« Reply #13 on: December 02, 2009, 08:08:18 AM »

When you switch on your radio on do you switch the Transmitter on before the Receiver ?
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lozvik

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Re: twin motors/esc's.... help!
« Reply #14 on: December 02, 2009, 09:49:06 AM »

yes transmitter on first, tried both ways
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DickyD

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Re: twin motors/esc's.... help!
« Reply #15 on: December 02, 2009, 11:03:55 AM »

Sorry I give up.

Dont you wish you had gone to ACTion, I did on several of my boats and guess what, no problems.
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lozvik

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Re: twin motors/esc's.... help!
« Reply #16 on: December 02, 2009, 11:10:46 AM »

yr probably right, to be honest i dont know why i even bothered with this steering with props lark, everthings gone haywire, its a pain in the "xxxxx", it was perfect with one esc and rudders, i was trying to be bit too clever, think ill just put it all back as it was, its less stressfull, lol
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Peterm

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Re: twin motors/esc's.... help!
« Reply #17 on: December 02, 2009, 02:07:12 PM »

I had similar problems on my Aquarama, (steered by motor action).   Finally solved by using an ACTion P94 unit, now sails superbly.   Pete M
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DickyD

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Re: twin motors/esc's.... help!
« Reply #18 on: December 02, 2009, 02:16:37 PM »

Your wasting your time Pete, this has been going on for ages and several of us have suggested a P94 but he wont spend the money, just buys other stuff and then dumps it. >>:-(
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lozvik

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Re: twin motors/esc's.... help!
« Reply #19 on: December 02, 2009, 03:05:44 PM »

guys thanks for the info u have all been giving, most of it has been very helpful, let me just put u all in the picture, ive tried to build a bait boat for around the 150 mark which i have succesfully done, i recently wanted to try and steer it by taking away rudders and use the motors to steer intead, ok so it hasnt really worked but i only spent 15 on a mixer, if i spend 76 on a p94 then i may as well have bought a second hand baitboat thats up and running from ebay job done, so for now its back to rudders, that way at least i know it works and can stop pestering u lot.
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Peter Fitness

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Re: twin motors/esc's.... help!
« Reply #20 on: December 02, 2009, 10:00:35 PM »

This is the set up in my pusher tug / club rescue boat. The motors are controlled by 2 Mtroniks Viper 15 ESCs, using so called "Tank steering", that is, each motor operated by a different stick. As all my transmitters are Mode 1, that means the right stick is throttle, operating the right motor, and the left stick which would normally be elevator in an aircraft, now operates the left motor.

The 6v 10ah battery, which sits between the 2 aluminium angles, is connected to both ESCs via a Y harness using Deans connectors. I have had no problems and, once the technique is mastered, steering is very effective, and pirouettes are easily performed. There is a rudder positioned between the props, but because of its location, is not overly effective, although it does help a little.

Having said that, the ACTion P94 is not much dearer than 2 ESCs, and is a brilliant piece of gear.

Peter.
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Ghost in the shell

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Re: twin motors/esc's.... help!
« Reply #21 on: December 02, 2009, 11:09:33 PM »

lozvik I had a similar problem ballancing Nord Icelandia's twin motors.  

1/ set your trims to zero and turn off all mixing, and assign channels 1 and 2 as throttle, (RIGHT HAND stick in mode2.  - if you have a multi-mode radio, put radio in mode3 which puts ch1 and 2 on LEFT stick)
2/ re-place red wire off servo lead on slave esc and plug back in only have one esc turned on at once
3/ plug master esc onto battery, leave slave esc unplugged at battery, power up Master and press SET whilst lights flash
4/ follow set up proceedure and then check functionality
5/ unplug master esc from battery and plug in slave esc to battery
6/ power up slave esc and press SET whilst lights flash
7/ follow set up proceedure and then check functionality
8/ unplug slave esc and remove red wire from servo lead, replace plug back into its assigned channel
9/ reconnect BOTH esc's to battery and power up, turn on ELEVON mixing
10/ you should now have them both running as needed

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lozvik

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Re: twin motors/esc's.... help!
« Reply #22 on: December 03, 2009, 08:37:45 AM »

Thanks a lot guys some good constructive advice there, I will try that and let you know how it goes, cheers
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MichaelK

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Re: twin motors/esc's.... help!
« Reply #23 on: December 09, 2009, 10:23:09 AM »

Hi, my Matilda will be twin 540's , tank steering etc. At the moment with the electronics on the bench, all is perfect.
I can get L and R sticks to drive the motors, move the inputs in the receiver and I can get both motors, Foward and reverse on L stick, then swap the mix button and I get port motor on L stick (up and down) and stb motor on R stick(left and right) It's an aeraleon thing.
I'm using Spectrum dx5e
I will watch to see what hapens with yours
Mick


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lozvik

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Re: twin motors/esc's.... help!
« Reply #24 on: December 09, 2009, 12:00:38 PM »

Hi mate, at the moment im just gonna leave mine on rudders, might have another attempt at sorting it at some point, cheers anyawy
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