Testing a couple of 1/10 120A ESC (Pictures of the 200A is in here too)

[snellemin]

Originally Posted by lutach

Let me know how your testing goes snellemin after you add your caps.

I'll update my review when I do this weekend.

[snellemin]

I hooked up the 4800kv Medusa onto the Rustler with the heavy beadlocks and Imex tires. With the use of a cold 3s1p A123, 200A ESC, 58/25 gearing, it pulled my voltage down to 4.39V@153A, peak 786W. I'll drive it around through grass tomorrow and see how the motor and esc behave.

[lutach]

Nice. Did you have any stuttering issues? How was the start ups? I asked the factory to do their best for the ESC to work good in sensorless mode with 4 pole and higher motors and they're waiting for some info. I told them I tested my Neu 1515/1.5Y with 4S unloaded and it didn't have any issues.

[snellemin]

Did another run w/3s2p A123 and peaked it at 182A@5.88V with a peak of 1204Watts. In 4 minutes I consumed 1400mah.

The ESC is really smooth with the medusa. No cogging whatsoever.

[lutach]

Nice. The ESC is sure putting out a lot of power. Almost at its peak. It'll be nice to see someone that has a Tekin RS Pro try the same thing. I wish the weather was better here so I can do some runs as well. I guess me buggin' them to make sure the ESC will work good with a multi pole motor paid off .

[BL_RV0]

That's good. I'm planning a 1/10 project and will need 2 escs.

[snellemin]

I just tried a silly 9/44 32P gearing in my big pan car, running the 2.5T motor on 3s1p A123 in my garage. It moved forward everytime and smoothly at that. But take out the sensor cable and you get some serious cogging. I need VHT to put some load on this motor.

[lutach]

Originally Posted by snellemin

I just tried a silly 9/44 32P gearing in my big pan car, running the 2.5T motor on 3s1p A123 in my garage. It moved forward everytime and smoothly at that. But take out the sensor cable and you get some serious cogging. I need VHT to put some load on this motor.

With the high Kv motors I have it also does cog unless I go with a 15-16:1 ratio. Now it doesn't cog at all when I used a 5.5T (Half the Kv of the 2.5T) in my KX-ONE. That is why I only run them in sensored mode with low gear ratio, which is very smooth. The reason it didn't cog with the Medusa is because of the lower Kv it has.

[snellemin]

Yes, that is something the mamba can't do. You have to ease into the throttle to get a higher kv motor going.

[lutach]

Originally Posted by snellemin

Yes, that is something the mamba can't do. You have to ease into the throttle to get a higher kv motor going.

When you do your review with the Mamba, try and run the same set up with it.

[snellemin]

Originally Posted by lutach

When you do your review with the Mamba, try and run the same set up with it.

I allready know the answer with that one. It' won't do it.

[lutach]

Originally Posted by snellemin

I allready know the answer with that one. It' won't do it.

Ok lol.

[johnrobholmes]

sensorless startups will always cog with a higher kv motor that has a tall rollout. It just takes too much tire rotation to get a lock on the EMF feedback.


Good job on the ESCs lutach, I like seeing guys get what they want.

[lutach]

Originally Posted by johnrobholmes

sensorless startups will always cog with a higher kv motor that has a tall rollout. It just takes too much tire rotation to get a lock on the EMF feedback.


Good job on the ESCs lutach, I like seeing guys get what they want.

You're 100% right John.

These are still being tested and there could be more improvements. The factory will be doing a 40A micro ESC as well (I hope lol) as 2 versions of 1/8 scale ESCs. It's still not easy trying to get them to do exactly what I want and I'm not letting anymore of my ideas out.

[snellemin]

Did a few test runs with 4S1P A123 in the Rustler geared 58-15 and 58-25, with the Medusa 4800kV motor. Peak Amps between the two gear ratios was off by only a few digits.

I used a Dimension Engineering park bec instead of the built in BEC. I peaked at 1125W, 181.36A@5.58V
Power Graph