Noob Question for you tech guys.

[Dagger Thrasher]

Nope, that's not going to work I'm afraid. In a nutshell, sensorless brushless ESCs use back-EMF pulses from the motor in order to know what position the rotor's in, so that they can drive the motor. Trying to run two motors on one ESC would result in two "sets" of back-EMF pulses, which would totally confuse the ESC and probably end up frying it. In theory it's possible if the motors were completely synchronised (identical KV and rotor start position), but simply getting hold of two motors with identical KV is nigh impossible.

In short, two motors on one ESC isn't going to happen I'm afraid. Twin VXL systems work, but they're an inefficient way of doing things; the two motors will always be fighting each other slightly because they're running on the same spur, and it's also a heavier solution. Plus, with two motors, you'll always get lower total efficiency than with one high-quality motor...and the VXL motors are already run hot. Lastly, it's more expensive.

Besides, two motors are completely unnecessary; one large motor can easily provide enough gumption. It might not look perfectly symmetrical, or as "cool" as two motors do, but you'll enjoy the lower cost, higher efficiency and greater simplicity of just one motor. Efficiency is *everything* in a brushless setup.

Edit: Just saw Jerry's post. RiverMaxx, the SuperDuty XR speedo that Jerry's talking about is a brushed-only controller. You can run twin brushed motors easily, but not brushless. I thought I'd try to avoid any confusion there.

[JERRY2KONE]

[QUOTE=Dagger Thrasher;254006]Nope, that's not going to work I'm afraid.

The Novak Super Duty XR is a brushed sensorless ESC

[Dagger Thrasher]

[QUOTE=JERRY2KONE;254007]

Originally Posted by Dagger Thrasher

Nope, that's not going to work I'm afraid.

The Novak Super Duty XR is a brushed sensorless ESC

Sorry Jerry, I was referring to RiverMaxx's first post. I must admit, I always thought that, for two brushless motors on a single ESC that the KVs had to be identical (e.g: if one motor was 2253KV exactly, then the other would have to be also), but obviously I'm wrong on that part. Still, it's tricky and a bit impractical to do.

Originally Posted by RIVERMAXX

I found some spec on that novak jerry. Maybe someone can interpret it for me. Will it even work with brushless what would be a good set of brushless motors too run? I am just exploring all my options this is not a for sure thing. How about 2 2200kv motors?lol
SPECS: Voltage input: 6 to 14 cells (7.2-16.8V) On-resistance:0.0011 ohms
BEC voltage: 6.0V/3A Weight: 4.03oz (114g)
Maximum current: (forward) 400A (reverse) 180A
Case size: 1.75" x 2.17" x 0.85" Rx wire length: 10.5"
Batt wire length: 7" (both) Motor wire: 13"
Wire Gauge: 14 Yellow (+), Blue (-)
Single motor limits @ 6 cells: None
Single motor limits @ 10 12 or 14 cells: None (550 size only)
Dual motor limits @ 6 cells: 10 turns
Dual motor limits @ 10 cells: None (550 size only)
Dual motor limits @ 12 and 14 cells: 12 turns (550 size only)

RiverMaxx, the Super Duty XR is a brushed-only ESC; totally different technology to brushless. It won't run any brushless motors I'm afraid. You're wanting something along the lines of a Mamba Monster, which is a big, powerful brushless ESC (but can also run brushed motors if you wish).

[JERRY2KONE]

Don't worry River you will get the hang of this all in good time. It is a little bit overwhelming at first, but some of it starts to sink in as you try different things on your own. Good thing is that there are quite a few very knowledgable guys on here that have already been through what you are feeling right now. Lean on them and they will lead you in the right direction. Trust in them and try the single brushless motor setup first. Then if you still want to explore the V-twin setup you will have learned enough to go that route with little trouble. I am glad to see that you are digging into this though.

By the way has anyone noticed the thread on (New parts). I posted up in there to let everyone know that UE is back in business. I know some of you know this, because I saw you on UE earlier. He is making up some monoblocks to start with to see how the response goes. He is being bonbarded with requests for other parts as well. We shall see.