Hi,
I made some progress with the M07 electrics last night. I looked at the options which are basically

1) Buy a twin motor esc - two expensive and will only use it once.
2) Wire two motors in series - can do this off a single esc, but only get half the revs so very slow
3) Wire two motors in parallel - you get full revs, but the two parallel motors appear as a single motor with half the turns so I would need around a 10 turn ESC to run two sport tuneds.

I am going with a fourth option which is to run two sport tuneds connected to two teu101 ESCs driven from a single lipo and a single receiver. This option is not as widely discussed on the forums, but I can't see why it wouldn't work and I can build it easily from the parts I already have.

Last night I made a Y lead to come of the battery and connect to two ESCs, I also fitted a Y-lead from the receiver. I will do a quick bench test tonight, but still need some steering parts and need to replace the current silver cans with sport tuned motors before I take the car out for real.

Duane.

I am not sure if the principle is the same but I have wired planes with twin EDF's on a single battery/rx configuration. In these cases it is suggested to remove a single red lead from one of the motors. I believe this is more a case of protecting the BEC functionality of the ESC's but is more pertinent in brushless motors. I am not sure how it would work with the brushed setup, but check out the airplane forums, you might find more info there as it is prominent in planes. Most people use BL now, so your search would need to be specific to brushed.

Hi Andy,
I had seen one reference to cutting a wire to protect a BEC, but I was skimming articles at the time and couldnt find it again when I had settled on this solution. I will have another look.

Thanks
Duane.

"If the ESCs have internal regulators (bec) power the reciever and servos, then you also need to mod one of the ESCs plug into the reciever. On one ESC you must remove the red wire from the plug...if you do not both ESCs will try to provide power to the reciever, which is not good. Some guys snip the red wire, but then if you want to use the ESC on its own in a future project, your screwed....the solution is to lift the plastic section of the plug and push the wire and its crimped connector out of the plug. Then you shrink wrap the lead so its there for use later if you need it. "

Looks like they mean cut one of the red wires from the BEC so that you dont have two ESCs trying to power one receiver. As the BEC is through a seperate plug on the TEU101 I dont think I will need to do this.

i think it's the same principle as Motor on Axle Crawlers. . . . which strawb has. . .

True, Strawb are you out there ?

Duane.

Duane here is a wiring diagram for dual tekin esc's, but essentially the principle should be the same

I wouldnt power the rx through the esc, just get a external BEC instead, safer for your electronics

You can also use a y-harness for the 2 esc leads if you only want to use one channel to control the esc's.



Diagram courtesy harley on rccrawler.com

Pretty sure that the TEU101 doesnt provide a BEC through the throttle channel so its a lot simpler, no need to cut anything and can just use a y-lead. Will check with my meter this evening and if all goes well I will get it running.

Duane.

Duane you're right TEU101 doesnt have any internal BEC, so it should be pretty simple.

Very much looking foward to getting home and trying the M07. Lets hope it doesnt end in a bang !

nice project there duane! hope it works

Haven't seen a single pic, ergo....it doesn't exist

Tried the M07 on the kitchen work top, too many wires but no smoke. It sounds good as well.

If I get my act together in the next half hour I will pull two sport tuneds and a servo out of my other minis and try it out in the street.

Looking forward to some twin motor acceleration and four wheel braking.

Duane.

Just been out in the street with 'The Birds Nest', the name is on account of my wiring, there is a lot of it.

It is stupidly fast, it power slides around corners and will fish tail for 20 feet out of a corner. All very cool in a short wheelbase mini.

Everyone should have a M07 aka 'Birds Nest'.

Duane.