how did I smoke my new feigao

[Bigbore]

First of all Leopard are 4 poles and Feigao are 2 poles and I was told 4 poles helps running cooler.
I noticed also one difference between Feigao and Leopard. If you spin the rotor with Feigao it runs free and instead the Leopard has 12 clicks. The difference is in the stator. The coils on Leopard are wound on a piece of iron (airgap?) and on the Feigao stator the coils are wound on nothing.
Does the airgap helps to run cooler too?

[Karfrik]

looks to me like you went too far on running time also,it then overheated and de-soldered the bullet for sure.Have you tried and tested this setup before?....in order to find out its temps and safe running times?....everyone blames the feigaos `cause now the Leopards are the ones to have.Thats easy to say.I still run feigaos and never had any issues whatsoever with them.....you just need to be cautious on your setup thats all.
You mentioned they were run in a parallel setup,...have you checked on it?..can you show us your parallel wiring?...did you build it yourself or did you bought it?......as you can see there can be so many variables and thats why you need to check on all of them.But its all part of the hobby.....in order to learn you need to try.....good luck with your next motor.....FE rules!!!.......Albert

[dasboata]

looks to me like you went too far on running time also,it then overheated and de-soldered the bullet for sure.Have you tried and tested this setup before?....in order to find out its temps and safe running times?....everyone blames the feigaos `cause now the Leopards are the ones to have.Thats easy to say.I still run feigaos and never had any issues whatsoever with them.....you just need to be cautious on your setup thats all.
You mentioned they were run in a parallel setup,...have you checked on it?..can you show us your parallel wiring?...did you build it yourself or did you bought it?......as you can see there can be so many variables and thats why you need to check on all of them.But its all part of the hobby.....in order to learn you need to try.....good luck with your next motor.....FE rules!!!.......Albert

I think my ESC would of smoked with 37 volt!!! If I had it hooked up in series

[GP73]

More like exploded...

[dasboata]

hard to screw this up

With the connectors like this and I know I need to shrink wrap my y connectors needed 1" shrink tube thanks chris

[RIPFENCE]

definately the way to go if running parallel setups..just takes another variable out of the picture..are you ready to quit electrics already? i think a lot of us have been pissed at these things more then once

[Karfrik]

definately the way to go if running parallel setups..just takes another variable out of the picture..are you ready to quit electrics already? i think a lot of us have been pissed at these things more then once

Like RIPFENCE says,"another variable out of the picture".....a basic one but sometimes we overlook simple stuff like this.I work in aviation and sometimes what is a given its not....thats why we always triple check on everything,....
So what new motor is up on the table for it?....

[GP73]

Just be careful adding too much length to the battery wires.

If I recall correctly it's best to stay under 20cm max.

Some info in this thread:

http://www.rcgroups.com/forums/showthread.php?t=952523

With the connectors like this and I know I need to shrink wrap my y connectors needed 1" shrink tube thanks chris

[dasboata]

Like RIPFENCE says,"another variable out of the picture".....a basic one but sometimes we overlook simple stuff like this.I work in aviation and sometimes what is a given its not....thats why we always triple check on everything,....
So what new motor is up on the table for it?....

You are right I have made my share of dumb mistakes,,, I am looking to get a Leapard 3674,,, 1900 KV as recomended by Jay !!! as it should fit right in the mount I have !!!

[6sHyper]

Well i can tell you i have had great luck with the Feigao 10xl in my Apparition, full length battery runs (approx 6 mins) and the motor is only 130f and T180 esc 90f batteries 100f.

Switched the motor out for a Castle 1512 1.5y 1800kv (direct fit) and had same run length, but motor only got to 100f and esc 90f batts 90f. Oddly enough the higher kv castle was a tad slower thna the lower kv feigao, still trying to figure that part out but i think it was pulling more amps than the feigao did and my 6s1p couldn't deliver, so i'm going to run 6s2p and doing some mods to my cowl to fit the castle 1520 1600kv on there.

[6sHyper]

hmmmmmm that makes me think about something actually you were running 5s2p so maybe yours was pulling more amps than mine even on 6s1p??? Perhaps feigaos are better off being run on a 1p setup??? That way the amps are not available for the high current spikes.

[Rumdog]

hmmmmmm that makes me think about something actually you were running 5s2p so maybe yours was pulling more amps than mine even on 6s1p??? Perhaps feigaos are better off being run on a 1p setup??? That way the amps are not available for the high current spikes.

You want the available amps. If they go bye bye, you can prematurely hit the lvc,and/or puff your packs. This is obviously dependant on your setup. I'd say the main cause of failure here is the long run time and cumulative heat.. like has been said already.

[dasboata]

You want the available amps. If they go bye bye, you can prematurely hit the lvc,and/or puff your packs. This is obviously dependant on your setup. I'd say the main cause of failure here is the long run time and cumulative heat.. like has been said already.

You know I am really not sure how long we ran it,, I did not have a stop watch on it I was pretty excited to run the boat. I was having some handling issues , . I was enjoying watching My grandson running it, ,I did a prop change, I had the thing taped up .I really did not want to unwrap it to check temps, I did not check for the water cooling. so I am sure I made some mistakes that added to frying the motor,, like someone said here there is a learning curve I will do better next motor ,, and have my infared heat gun for sure,

[Rich]

Your going to like the Leopard motors. This is the data with a 4082 1500kv on 5s2p spinning an m445. Will be propping up soon.

[crrcboatz]

Let me just say that I too face the newbe phase of FE BUT if u guys step up will good info like u presented on this thread it will surely help the process move along.


Way to go! GREAT help and a wonderful learning opportunity