Feigao Brushless motor

[hydrozz]

Has anyone heard of Feigao brand of brushless motors , they are from China and they are cheaper, are they worth trying. I havent heard too much about them, should i stick with the more popular brands.

[Larry Benson]

I don't know about boats but I have been using a couple in planes since last year and they seem to work well.

[F1tunnelhull]

feigo BL and Nemisis BL motors are copies from the hacker. There was a post on here quite some time ago debating what is better

to sum up

feigo BL and Nemisis BL motors are not as good. However in a sport setup or oval racing they have simular if not the same results.

For SAW racing. where equipement is pushed hard and to the limits, the cheeper brands will not stand up to the task.

I have a hacker and it is great

also got a nemisis and have had no problem. Its great for what i use it for and cheeper.

David

[Steven Vaccaro]

At almost a 1/3 the cost of the Hacker its a great alternative. If you have the extra cash to spend get the Hacker.

[starluckrc]

Nemesis is Feigao. There is no difference between those other than can color. Feigao is also now producing the Wanderer for BK Electronics........same motor with BK connectors.

[hydromaddicted]

Originally posted by starluckrc
Nemesis is Feigao. There is no difference between those other than can color. Feigao is also now producing the Wanderer for BK Electronics........same motor with BK connectors.

I heard the Wanderer is slightly different? but still produced by Feigao.Besides the connectors, I was told it has screwed on ends and upgraded magnets and is good for a little more power, has a higher max RPM 80,000 as opposed to normal Feigaos 50,000?
At least thats what I was told?

[starluckrc]

From the horse's mouth:

"Thanks for your information. It's true that they OEM from us. Actually the performance is no difference, just different color and with BK's connectors."

[Steven Vaccaro]

Originally posted by hydromaddicted
I heard the Wanderer is slightly different? but still produced by Feigao.Besides the connectors, I was told it has screwed on ends and upgraded magnets and is good for a little more power, has a higher max RPM 80,000 as opposed to normal Feigaos 50,000?
At least thats what I was told?
I emailed feigao, they have no bearings capable of more than 50k. I would love to see the 80k bearings on the Wanderer.

[J Solinger]

At 80,000 rpm I would be worried about the magnet on the armature blowing off.

We used to have a jig grinder head that ran 180,000. The bearings would last for a few hours total run time then it needed a rebuild. The bigger issue was grinding wheels exploding. I only used up to about a 1/16" diameter wheel with that head but even they would let go now and then.

[Andrewg]

80,000 on a feigao isnt on

Use 35-40,000 as a limit and they will be fine.

Runnining over 40 k is likely to result in failure due to iron losses - the failure will be sudden and will require a new winding.

[Don Wollard]

Originally posted by Andrewg
Runnining over 40 k is likely to result in failure due to iron losses - the failure will be sudden and will require a new winding.

A different explanation perhaps - but these motor fail rapidly at high speed.

What I discovered was the bearings go first. They are very cheap. In the motors I tested - bearing failure causes the rotor to whooble. Because of the small air gap, the rotors can easily skin a part (actually any part) of the coil. This in turn creates a short and the motor is essentially shot.

That not the bad part. A coil short will generally back feed (Spike) into your controller and guess what happens next?

Several of the Feigoa motors I ran failed below 30K RPM. Indeed these where early motors so they could have improved the bearings - but I doudt that.

[Dennis Whitt]

I have been succesfully running both Fine Designs Nemesis Blue and the Fullers FE Nemesis.My 8L has run flawlessly and my 6S as well and believe me I put them through some harsh programs.
Anybody can put a motor over its threshhold and blow it up.Does that mean its bad?For what its worth those Fiago motors are money well spent !

[Steven Vaccaro]

For the low cost of the motors you can buy a set of 5x11x5mm for $25 ceramic hybrid boca bearings and still save a ton of cash.

[Jeff Shriver]

I am pretty happy with mine also. I have a Nemesis 8S in a N2 mono. So far it has exceeded my expectations.

[Don Wollard]

Originally posted by Dennis Whitt
Anybody can put a motor over its threshhold and blow it up.Does that mean its bad?For what its worth those Fiago motors are money well spent !

Perhaps. Any motor, controller or other technology pushed beyond its design parameters is subject to failure. Not surprising.

Otherwise - it should operate as sold.

[Andrewg]

Everyone i know of is pretty happy with the feigaos - the bearing tolerances are in '000's of an inch so the runout should not be sufficient to cross the air gap which 2 magnitudes wider

Usually a bearing about to fail catastrophically makes it presence felt with a great deal of heat, noise and poor motor performance.

[Don Wollard]

Originally posted by Andrewg
Usually a bearing about to fail catastrophically makes it presence felt with a great deal of heat, noise and poor motor performance.

Andrew - Typically, bearings streesed outside there design parameters will fail without notice. By the time heat arrises - the motor is shot. I have a lot of experiance with this in high end motors - no matter the brand. Also - all rotors oscillate at high speed. Just engineering 101.

Steve - last I checked with Boca Bearing, they did not offer ceramic bearings capable of sustained/continuous loads over 40,000RPM. I think someone posted that a while back in a SAW forum or BL Motor forum. The $25. bearings we tested failed rapidly at high speed. Boca's engineer advised us to use a custom ceramic unit which where in the range of $300 per set. We declined. What experiance do you have with these low end ceramics? Perhaps I applied mine wrong.

[Steven Vaccaro]

Don my setups are offshore, so they are not even close to 40k. Wonder what the lehners are using for bearings?

[Andrewg]

Don

I have done engineering "101" Actually it tends to be a bit more abstract mainly computing, physics, chemistry and maths.

I did not realise you had an engineering degree.

Oh I saw a test of one of the 20 mm motors you sell, very.... interesting.

[Don Wollard]

Originally posted by Andrewg
Don

I have done engineering "101"

I heard that rumor. ;)

[Capt Ron]

i only have one Nemesis, an 8L and it's doing just fine but my friends have lots of Feigao and Nemesis motors and love them for the price and the performance...

Ron

[jollyroger]

So what would I need for a 6-8 cell outrigger, as in number of turns and motor length? I have been considering the Feigao line for my own sport use. Jollyroger

[Capt Ron]

perhaps someone who plays with 6-8 cell rigger's can offer better input...

Ron