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-   -   ESC Testing and Comparisons (https://www.rctech.net/forum/radio-electronics/1141537-esc-testing-comparisons.html)

gigaplex 05-05-2026 03:54 PM


Originally Posted by rhodopsine (Post 16257333)
The biggest difference I felt between various ESC was when running partial throttle. At the same frequency, some feel a little punchier and others feel a little smoother. Never felt a difference in top speed per see, but I think that in stock, an ESC with more punch at partial throttle helps to get out of the corner and navigate through technical sections quicker. I can definitely see that in mod, you would want more smoothness to help with throttle control. Now, I'm pretty sure that pretty much all high end ESC can be tuned and will end up pretty much equivalent.

Martin Paradis

I fee that's overrated in stock. If you're at partial throttle and feel like you need more, pull more throttle.

gigaplex 05-05-2026 03:57 PM


Originally Posted by Roelof (Post 16257392)
In case of blinky some degrees off in the positive direction could explain why some ESC's are more popular than others.

Being some degrees off in the positive direction would fail ROAR testing.

OffRoadJunkie 05-05-2026 05:30 PM


Originally Posted by Roelof (Post 16257392)
In case of blinky some degrees off in the positive direction could explain why some ESC's are more popular than others.


Originally Posted by gigaplex (Post 16257398)
Being some degrees off in the positive direction would fail ROAR testing.


Gigga is correct on this. In order to meet ROAR regulations, the ESC's have to be set to zero degrees.

Roelof 05-06-2026 01:14 AM


Originally Posted by OffRoadJunkie (Post 16257411)
Gigga is correct on this. In order to meet ROAR regulations, the ESC's have to be set to zero degrees.

Yes, as the blinky code should say that it is in zero degree timing but how accurate zero is it?

gigaplex 05-06-2026 01:58 AM


Originally Posted by Roelof (Post 16257442)
Yes, as the blinky code should say that it is in zero degree timing but how accurate zero is it?

The ROAR testing equipment ensures it's accurate.

Roelof 05-06-2026 02:37 AM

Interesting, how is ROAR testing this?
Is it with a same setup as used on the worlds many years ago with the use of a scope?

So far I have seen over here only the blinky code is checked and with RPM limiter ESC's there are different blinky codes.

gigaplex 05-06-2026 03:08 AM


Originally Posted by Roelof (Post 16257450)
Interesting, how is ROAR testing this?
Is it with a same setup as used on the worlds many years ago with the use of a scope?

So far I have seen over here only the blinky code is checked and with RPM limiter ESC's there are different blinky codes.

I'm not referring to scrutineering at events. To get put on the approval list the manufacturer has to send samples. I'm not sure the specific equipment they use but I believe oscilloscopes are involved.

OffRoadJunkie 05-06-2026 08:26 AM

I'm sure they have some pretty cool tools to check this stuff. I wish I had the knowledge to create these types of gadgets.

rhodopsine 05-06-2026 09:41 AM


Originally Posted by gigaplex (Post 16257397)
I fee that's overrated in stock. If you're at partial throttle and feel like you need more, pull more throttle.

It's not so much the speed as how quickly it reaccelerates when you get back on the throttle. It may be completely imaginary but it's something I felt going from one ESC to another. Same motor, same battery, same gear. Basically, what happened is I plugged my ESC backwards, had to replace it with another brand. Set the new one as close as I could with what I had on the old one. The new one wasn't faster in top speed, but the car definitely accelerated quicker out of the corner. And it wasn't because the ESC I smoked was old, I had only 2-3 races on it.

Again, you may have had different experiences, but that's what I meant by being punchier.

Martin Paradis

PDR 05-06-2026 03:51 PM


Originally Posted by Roelof (Post 16257450)
Interesting, how is ROAR testing this?
Is it with a same setup as used on the worlds many years ago with the use of a scope?

So far I have seen over here only the blinky code is checked and with RPM limiter ESC's there are different blinky codes.


Originally Posted by gigaplex (Post 16257453)
I'm not referring to scrutineering at events. To get put on the approval list the manufacturer has to send samples. I'm not sure the specific equipment they use but I believe oscilloscopes are involved.


Originally Posted by OffRoadJunkie (Post 16257500)
I'm sure they have some pretty cool tools to check this stuff. I wish I had the knowledge to create these types of gadgets.

I can't lay my hands on it (there's a ROAR document on this) right now, but I have the recollection that there is an upper limit for the time the motor phase must fire after the sensor is tripped. I think it's 8 microseconds. Zero tolerance (pardon the pun) for firing early. Testing is done with an oscilloscope.

I have tinkered with a field-usable tool for doing this, but too many distractions...

K4IZEN 05-07-2026 12:34 AM

Hoping you can squeeze an elceram g2 oxide into the budget, mean’t to be smoothest on the roar scope

chevmaro 05-07-2026 12:40 AM

I would like to know if the Low IR claims for esc’s are real or a marketing gimick.Tekin RS black edition and Hobbywing X come to mind. I don’t think you need to compare all the esc’s but compare justock and Cayote crest 60/80 amp esc against their top dollar sibling.

gigaplex 05-07-2026 01:40 AM


Originally Posted by chevmaro (Post 16257648)
I would like to know if the Low IR claims for esc’s are real or a marketing gimick.Tekin RS black edition and Hobbywing X come to mind. I don’t think you need to compare all the esc’s but compare justock and Cayote crest 60/80 amp esc against their top dollar sibling.

Measuring that would take some rather specialist equipment, we're talking microohms. Most brands don't even bother advertising that spec anymore, I can't find it on Hobbywing at least.

Roelof 05-07-2026 01:48 AM

If you know what FET's are used and how many parallel you can determine it by the datasheet. You can be pretty sure this is how the ESC spec is determined.

gigaplex 05-07-2026 04:07 AM


Originally Posted by Roelof (Post 16257652)
If you know what FET's are used and how many parallel you can determine it by the datasheet. You can be pretty sure this is how the ESC spec is determined.

That's another thing you can do with internet researching instead of buying a bunch to test.


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