I'm having trouble with my brushless senton

[332_RC]

I bougth it brand new from ebay

If you don't mind me asking, who was the seller? There are some on ebay that sell 'new' rc items that are not. Been there.

 

[alex16]

If you don't mind me asking, who was the seller? There are some on ebay that sell 'new' rc items that are not. Been there.

Jennys RC

 

[332_RC]

Jennys RC

Jennys is 110% good. Trusted.
Dunno friend. I had problems with my BLX100, & switched to another ESC. I know I've already said that, but it fixed my Senton. I still have the BLX100 in a box.

 

[alex16]

Jennys is 110% good. Trusted.
Dunno friend. I had problems with my BLX100, & switched to another ESC. I know I've already said that, but it fixed my Senton. I still have the BLX100 in a box.

I guess that what ill do, thanks for the help

 

[WickedFog]

Jennys RC

Jenny's has a website here. I would contact Ted and ask him if he can replace that ESC. Ya never know.

[email protected]

 

[332_RC]

Jenny's has a website here. I would contact Ted and ask him if he can replace that ESC. Ya never know.

[email protected]

This is true. Ted has contacted me promptly with my questions. Always takes care of his customers.

 

[WickedFog]

This is true. Ted has contacted me promptly with my questions. Always takes care of his customers.

Yeah, he's a really cool dude.

Jenny's tip: If you ever need anything that is out of stock, request an email when it's back in stock. That gets Ted to tear down a kit to restock that part usually within a day or two. But ya gotta be Johnny-on-the-spot because the item will disappear quickly.

If it doesn't come back in stock, you can email him and he'll usually give you a pretty good idea when to expect it back in stock, because he will sometimes be waiting on a kit to be shipped to him.

 

[Tunedfrog]

3900 kv on 3 cell hmmmm
and the quality of battery? how many runs? ir #s

I dont run any 540 > motor on 3 cells over 3300kv..I can gear a 3000kv to match a 3900 kv all day long and my takeoff speed will be greater than higher kv
Do you people do any type of research on motors esc batteries?

I'm confused TNT, if you generally get pissed off anytime somebody asks a question, then why are you here?
You have the personality of a gold fish and sense of humor of a rock.
You have forgotten more than any of us have learned.
What's the reason you are here?

 

[RustyUs]

It's always nice to have a couple LiPo battery testers/alarms (pictured below) to help diagnose rule out things.

In your case I'd switch the ESC's LVC option to NiMh mode, and use LiPo alarm on battery's balance plug to tell you when cells are at low voltage.

 

[WickedFog]

What batteries are you using?

 

[RustyUs]

What batteries are you using?

He is using HRB LiPo battery. Pic from video...

 

[WickedFog]

Pic from video...
View attachment 200880

Oh. Amazon specials. Could possibly be the batteries have a lot of voltage drop and tripping LVC. But doesn't the BLX100 just stop when it hits LVC?

I like your switching to NiMH mode idea. That might narrow it down. Plus the LiPo alarm will show if it's a battery issue.

 

[Greywolf74]

I dont run any 540 > motor on 3 cells over, 3300kv..I can gear a 3000kv to match a 3900 KV all day long and my takeoff speed will be greater than higher KV

This statement depends on the application and the size of the track to be true. An onraod car on a large high speed track will benefit from the higher KV. Likewise, a no-prep car will also benefit from higher KV.

Do you people do any type of research on motors esc batteries?

Do some research yourself. Most RC motors top out at about 60,000RPM. A 3900Kv motor even on a fully charged 3S pack is only hitting 49,000RPMs max, which is why many manufacturers make motors in the mid to high 3000kv range that can run on 3S. The bulk of a LiPo pack is discharged around the nominal voltage (which is why nominal voltage rating exists) and at nominal voltage you're only pulling around 43,000RPM giving even more headroom to run 3S. You have to choose the right application, tune gearing, and watch motor temps, but that's always true.

That being said, some high 3000's KV motors might not be designed to run 3S, so the OP should consult the manufacturers ratings to be sure, but just because you don't run 3S on high 3000's KV motors doesn't mean others can't. So, while it's possible that a specific 3900kv motor might not be designed to run 3S, most are.

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@alex16 A red flashing light on an ESC generally indicates low voltage cut-off. Since your batteries are new, and it's happening right after you start trying to run, it's most likely a faulty ESC. That being said, also make sure you don't have anything plugged in backwards or in the wrong place, etc. I seem to recall reading on here somewhere of a person that was having some sort of issue with his electronics, and it was because he had something plugged in backwards or wrong. I'm betting it's a faulty ESC though.