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[Bradley]

Can I run two 580 size motors through one ESC?  I don't need to control them individually - quite happy with both going ahead/both stopped/both going astern.  If this is possible, how would I wire them?  Would a 50amp ESC cope?
This sort of query may have been brought up previously but my search of the forum has not found the answers I need.
Many thanks for any help from all you knowledgeable Mayhemmers. 
Derek.   

[Arrow5]

Thanks Derek, I need to know the same but with two 540 motors and what size ESC ? :-\

[DickyD]

Yes you can run two motors through one escape. Wire one motor opposite way round if you have left and right props.

Shipmate 60 will tell you what esc you need, but I would think 50 amp should do.

I have two Robbe motors of a large size (no numbers on them) and i run them through a 50 amp forward 20amp reverse esc.

Though it works for me, get a second opinion on size.

For the wiring http://www.modelboatmayhem.co.uk/Common/Electrics/Images/setupsA4JPG.jpg

Diagram 1 should do.

[Shipmate60]

Derek, Arrow,
What voltage are you running on and what size prop?
Derek do you have any performance figures for the 580, not familiar with this motor.
540's, 550's 600's yes not 580's

Bob

[Shipmate60]

reply 3 shows the wiring diagram.

http://www.modelboatmayhem.co.uk/forum/index.php?topic=6169.0

Bob

[Bradley]

Thanks for the info Bob.  The motors are quoted as 580 but they are in a Chinese cheapy so, it is anyone's guess and they are powered by a 7.2v Ni-mh which I will replace with a 7.2v Ni-mh.  :-\
Derek.   

[Bradley]

Sorry, slight typographical error - should have read 7.2v Ni-cd being replaced with 7.2v Ni-mh.   
Derek.   

[Shipmate60]

I would go for a 20 amp ESC fused at 15 amps.
The real danger time is going from full ahead to dead astern, this can rack up the amps as the prop needs to fight against the foreward motion of the model.
If in doubt I am usually very gentle to get used to the handling characteristics. Then full ahead near the pondside where I am standing then chuck her full astern.
If she stops and runs astern all OK, if she dies she is at least close enough to recover.
If she blows fuse try a 20 amp and repeat.
If this blows you will have to get another ESC I am afraid, and run 1 ESC each motor.
Or get one of the cheapie Chinese ones, but they only give 50% power astern and if they blow only fit for bin.
My choice these days is ACTion as FLJ does a good recovery service.

Bob

[Bradley]

Many thanks, Bob.  You have told me just what I needed to know - very helpful.   
Derek.