What happens when you mismatch and ESC and motor?

[RetroThutmose]

Last night doing some club racing and my buddy next to me accidentally reversed polarity and fried his ESC. About 10 minutes later, I did the exact same thing like a huge dummy and fried my quicrun 120amp. Luckily one of my buddies had a spare ESC. however, it was an old 80 amp xr10 hobby Wing and I am using a much larger motor than is recommended, a 4300kv 3660

I thermaled the ESC in one qualifier because I forgot to plug in the ESC fan after making some adjustments on the programmer but I ended up winning the mains with this truck and ESC/motor combo.

Its a pretty small track configuration and I don't think I'm running any crazy high gearing so I'm wondering if my race day could have caused any damage to the ESC? Would the logs still show anything or do they clear after turned off?

 

[majin]

bump cause i wanna know too

 

[Greywolf74]

Last night doing some club racing and my buddy next to me accidentally reverse polarity and fried his ESC about 10 minutes later. I did the exact same thing like a huge dummy and fried my quicrun 120amp.

I'm a bit confused on this part. If you reversed polarity to the ESC, one of two things is going to happen right away. If the ESC has reverse polarity protection built in to it, it will simply not work until polarity is corrected. If it doesn't have reverse polarity protection built in to it, then It's going to release the magic smoke right away. Either your terminology is wrong or you need to re-examine what caused those ESCs to stop working.

Luckily one of my buddies had a spare ESC. however, it was an old 80 amp xr10 hobby Wing and I am using a much larger motor than is recommended, a 4300kv 3660

I thermaled the ESC in one qualifier because I forgot to plug in the ESC fan after making some adjustments on the programmer but I ended up winning the mains with this truck and ESC/motor combo.

Its a pretty small track configuration and I don't think I'm running any crazy high gearing so I'm wondering if my race day could have caused any damage to the ESC? Would the logs still show anything or do they clear after turned off?

If the ESC is still working, it's likely fine. However, you are pushing that ESC to its limits and continuing to use it will likely damage it in the long run. If your gearing is low enough you may not push it past its breaking point, but if you're racing, then even if that were the case you'd be leaving speed on the table. Best thing to do is use a temp gun and keep an eye on the ESC & motor temps through a few packs. If it's running at 165F or higher, than you'll likely smoke it sooner or later.

 

[RetroThutmose]

I'm a bit confused on this part. If you reversed polarity to the ESC, one of two things is going to happen right away. If the ESC has reverse polarity protection built in to it, it will simply not work until polarity is corrected. If it doesn't have reverse polarity protection built in to it, then It's going to release the magic smoke right away. Either your terminology is wrong or you need to re-examine what caused those ESCs to stop working.

Oh there was smoke. He fried a tekin and I fried a HW, neither have polarity protection.

If the ESC is still working, it's likely fine. However, you are pushing that ESC to its limits and continuing to use it will likely damage it in the long run. If your gearing is low enough you may not push it past its breaking point, but if you're racing, then even if that were the case you'd be leaving speed on the table. Best thing to do is use a temp gun and keep an eye on the ESC & motor temps through a few packs. If it's running at 165F or higher, than you'll likely smoke it sooner or later.

I don't plan to run this ESC and motor combo, it was just a quick pit fix. Already ordered an xr8. I was actually surprised it held up since this motor is way out of its spec limits.

 

[RustyUs]

Last night doing some club racing and my buddy next to me accidentally reverse polarity and fried his ESC about 10 minutes later. I did the exact same thing like a huge dummy and fried my quicrun 120amp. Luckily one of my buddies had a spare ESC. however, it was an old 80 amp xr10 hobby Wing and I am using a much larger motor than is recommended, a 4300kv 3660

I thermaled the ESC in one qualifier because I forgot to plug in the ESC fan after making some adjustments on the programmer but I ended up winning the mains with this truck and ESC/motor combo.

Its a pretty small track configuration and I don't think I'm running any crazy high gearing so I'm wondering if my race day could have caused any damage to the ESC? Would the logs still show anything or do they clear after turned off?

View attachment 232854

The SCT... 2wd, or 4wd?

 

[RetroThutmose]

The SCT... 2wd, or 4wd?

2wd, sc6.2

 

[Greywolf74]

Oh there was smoke. He fried a tekin and I fried a HW, neither have polarity protection.

Ok, again we have issues here. My original point was that the smoke would have happened instantly, not 10 minutes later as you originally said.

Also, Tekin ESCs have reverse polarity protection, so...... My original statement stands.

 

[RetroThutmose]

Ok, again we have issues here. My original point was that the smoke would have happened instantly, not 10 minutes later as you originally said.

You aren't understanding, the ten minutes was the time between him frying his ESC and me frying my ESC. It happened instantly, not sure why you're hung up on this ten minutes, it's a misunderstanding on your part and irrelevant.

Also, Tekin ESCs have reverse polarity protection, so...... My original statement stands.

Are you interested in the topic of the conversation or just some weird need to be "correct". This is some RC tech.net levels of pedantry. You might be my first user to ignore here.

 

[Greywolf74]

You aren't understanding, the ten minutes was the time between him frying his ESC and me frying my ESC. It happened instantly, not sure why you're hung up on this ten minutes, it's a misunderstanding on your part and irrelevant.


Are you interested in the topic of the conversation or just some weird need to be "correct". This is some RC tech.net levels of pedantry. You might be my first user to ignore here.

You are correct that I misread the part about it being 10 minutes in between, but that still doesn't explain how reverse polarity smoked the Tekin ESC that has reverse polarity protection built in to it. I'm interested in honest conversation. I'm simply asking you to clarify parts of your story that don't seem to make sense, so I can understand exactly what happened. Is it wrong to want to understand all the facts involved in a conversation?

 

[RetroThutmose]

You are correct that I misread the part about it being 10 minutes in between, but that still doesn't explain how reverse polarity smoked the Tekin ESC that has reverse polarity protection built in to it. I'm interested in honest conversation. I'm simply asking you to clarify parts of your story that don't seem to make sense, so I can understand exactly what happened. Is it wrong to want to understand all the facts involved in a conversation?

Yeah, ignored. Bye

 

[Greywolf74]

Yeah, ignored. Bye

lol. Now that's the best laugh I've had all day. Thanks, I needed that.

I admitted that I was wrong, but he apparently doesn't like to do the same.

 

[TeknoJ]

I also thought the Tekins had polarity protection, for what they cost they should.
Mis-matching esc's and motors is no big deal, I have a car running a hobbywing esc with a surpass motor. As long as the motor falls into the esc's capabilities you are good.
If the loaner esc shutdown on a thermal then yes, it was damaged but not at all fatal damage. Just don't do that over and over, like every race, or it will burn up soon.
@Greywolf74 is merely trying to help, and did admit he read something incorrectly.

 

[RetroThutmose]

I also thought the Tekins had polarity protection, for what they cost they should.
Mis-matching esc's and motors is no big deal, I have a car running a hobbywing esc with a surpass motor. As long as the motor falls into the esc's capabilities you are good.
If the loaner esc shutdown on a thermal then yes, it was damaged but not at all fatal damage. Just don't do that over and over, like every race, or it will burn up soon.
@Greywolf74 is merely trying to help, and did admit he read something incorrectly.

i don't know anything about tekin, never used their products. my friend said he fried it by reversing polarity, i don't know why this is garnering more discussion than the question in the OP.

 

[TeknoJ]

i don't know anything about tekin, never used their products. my friend said he fried it by reversing polarity, i don't know why this is garnering more discussion than the question in the OP.

Thats too bad, they are nice ESCs.
I answered the original question and wondered out loud, I was not garnering more discussion. If you don't want any of my or others' help or advice, then you don't have to ask for help or advice.

 

[RetroThutmose]

Thats too bad, they are nice ESCs.
I answered the original question and wondered out loud, I was not garnering more discussion. If you don't want any of my or others' help or advice, then you don't have to ask for help or advice.

Its fine to ask for more info but it wasn't relevant to the question at hand and wolf is wrong anyways. According to tekin there is no reverse polarity protection.

Its okay to be wrong, it's super annoying to insist you are correct about something that isn't relevant when you are in fact wrong.

 

[RetroThutmose]

lol. Now that's the best laugh I've had all day. Thanks, I needed that.

I admitted that I was wrong, but he apparently doesn't like to do the same.

You want an apology from me because you misunderstood my post and then you were wrong about tekin having polarity protection. Ignoring you was the right move.

Talk about having a laugh

 

[RustyUs]

You aren't understanding, the ten minutes was the time between him frying his ESC and me frying my ESC. It happened instantly, not sure why you're hung up on this ten minutes, it's a misunderstanding on your part and irrelevant.


Are you interested in the topic of the conversation or just some weird need to be "correct". This is some RC tech.net levels of pedantry. You might be my first user to ignore here.

Thank for helping me learn a new word... pedantry. And yes, RCTech can be volatile at times.

2wd, sc6.2

I was just wondering which Quicrun 120A ESC was being paired with what SCT. I'm assuming the sensored Quicrun 10BL120 speed control was being used simply because of the racing situation. I like to see what people put that ESC through. And you running a 3660 4300kv in a 2wd SCT... overpowering the RC platform... I like idea.

 

[RustyUs]

You did edit original post. I read it as some others read it. "Ten minutes"... it's all good. Some like to geek out on things. I'll admit to mismatching stuff. My poor Frog got put through a lot as I learned what to do, AND what not to do in the hobby.

 

[Greywolf74]

Its fine to ask for more info but it wasn't relevant to the question at hand and wolf is wrong anyways. According to tekin there is no reverse polarity protection.

View attachment 233000

Its okay to be wrong, it's super annoying to insist you are correct about something that isn't relevant when you are in fact wrong.

I didn't insist on anything other asking you to clarify your story. I was wrong on both counts (I could have sworn Tekin has reverse polarity protection built in) and that's OK, I'm not ashamed to say I was wrong. It happens. You could have simply showed me that I was wrong, and we could have gone on with the conversation, but instead you chose to get all pissy, and for what? Because I was trying to nail down some info so I could better assist you with your question?

I also never asked you for an apology. I simply found it funny that you got so upset over someone asking you for clarification of a statement in order to try and help you better. Granted, I was wrong on both counts, but my heart was in the right place. If you'd have been a little more grown up about it, we would have peacefully discovered all of this through civil discourse, and then maybe we'd have both taught each other something.

 

[RetroThutmose]

I think the xr8 is going to be a much safer investment. Look at the size difference