FEIGAO - Redesigned 540XL motors

[Demon-TC3]

hey all,
well after my 9XL rotor came appart after using it twice i contacted feigao directly and asked for their advice and how often it happens. i would usually just buy a new motor but it seemed UH didnt have them in stock for about 5 months due to "Warranty and quality" issues with the motors and kept putting the ETA back each month. this lead me to beleive feigao had stopped making the motor...at least for a while

after sending Feigao a few pics, video's, doucments to prove the age of the motor and also links to this forum regarding other feigao based problems they sent me a new rotor for my truggy (9XL) and a new 8XL to replace another toasted 8XL i had.

Well - im overjoyed to announce that as far as i can tell - they have done a little more in terms of design for these motors. the old XL rotors had one very large magnet which split...allot... and a short one. the larger magnet also came off the shaft which was a problem. they seem to have changed this for two magnets which seem to be the same physical size and the ammount of glue they use between the magnets is now increased to stop the magnets comming off the shaft. looking over the 8XL it looks the same from the outside and yet...somehow different...not sure what it is.


Either way, Feigao seem to have tried to (or at least started to) adress the issues people found with the XL brushless motors - who knows, maybe soon people will buy feigao's without a second thought. a strong, well performing brushless motor at a fraction of the price of the next most popular motor arround ( NEU ). and hopefully, they will now last!


Take care all,
Demon

[porra]

Demon,

Do you have pictures of the new rotors?

[Demon-TC3]

Yup - first pic is the old rotor. look where the space between the two magnets are - one is clearly much larger than the other and it seems that this is the problematic magnet for everyone - either it comes free of the rotor or that it splits


the second is what i THINK is the new rotor - magnets are now roghly same size and there looks to be more glue holding them together. only time will tell:
Old: http://img215.imageshack.us/img215/6881/oldrotorlb0.jpg


New:
http://img86.imageshack.us/img86/4267/newrotorma8.jpg

[porra]

Very nice.

[Andrewg]

Its a step forward with a mechanical integrity issue.

As you drew the comparison with Neus that only leaves

Neus 10-25% advantage in terms of efficiency which is like having a 10-25% bigger pack without the weight.
Neus better torque per amp figures
Neus huge advantage in terms of power handling
Neus mechanical integrity
Neus price reductions over the last month to catch up on....

Dont get me wrong I sell Chinese motors too - they have their place. They are cheap they do the job and generally tough.

IME you wont find a better motor than Neu outside a lab or aerospace or this side of a couple of grand.

[porra]

I hear you on that, but there are a few Asian motors that are good (Too bad they are not offered in bigger diameter LOL). I like Neu motors and I'm having a good time with a Mega ACn22/30/2. I've used Lehners and I plan on getting a Plettenberg. I might try to wrap the magnet of the Feigaos I have with Kevlar to prevent them from breaking. I think that should be the standard with the rotors.

[Andrewg]

Wrapping is a good idea - a lot use cf tow and remember to rebalance the rotors

I have found with the Chinese motors it often pays to dissemble them and check the inside is clean and the bearings are seated correctly - then use Loctite adhesives and screws to keep everything in place. Its amazing how much better things stay together when they have a little more time spent screwing together.

[Demon-TC3]

You are 100% about the NEU's - in terms of performanace, efficiency and quality they will beat the feigao every time - but they cost 6x more. for a basher there is still no motor below $60 that both performs reasonable well and is of a good quality.

for the price i love how the feigao performs and have absolutely NO complaints there. what im not happy about is the quality and i think if feigao did adress the issue then maybe you could say "Bashers get the Feigao - racers get the NEU" without a second thought!

I think the perfect Feigao would just have a single XL magnet rather than 2 stuck together - you would get a stronger magnet and a better performing, higher quality motor. a little more glue arround the endbell and perhaps something to stop you screwing into the mounting holes too far... then i dont think anyone could complain about the Feigao in terms of price and performance.

Take care,
Demon

[Andrewg]

Demon

If the magnet is different and higher strength the motor will rev slower with more torque, and if weaker run hotter.

If there is something better about the motor - its likely the old rotor had a fault which weakened its response to the coils so it would have had increased heat and vibration and less torque and power. Now thats been fixed it should accelerate better, be faster and run a little to a lot cooler, and any vibration and resonance through the chassis and shell will be absent too. An effective fix should feel better than it ever did with a faulty rotor. What your probably getting is how a new motor should feel. It sounds like you are pretty happy with it

I definitely see the Neu as THE race motor. BTW the Neu 1512F's are now $245. And the 1509 which is often overlooked but very effective is $214 and they have good resale value &/or are worth keeping. Take off the $100 you will get from the resale in the long they look better value.

[Demon-TC3]

yea, well, im still using my original 9XL with the old rotor - used some high strength araldite and reglued the magnet onto the shaft. holding well so far.

i have not used either of the new motors yet (dont see the need for the moment) but in terms of performance the feigao's have always been solid - as i say, the only problem with them was the poor build quality which seems like it is being adressed. i did buy an NEY 1512 1.5Y a while ago and found te KV rating too low to use in my truggy - it was arround 1400 wheras i need closer to 1900 - 2000. i sold it on and decided to stick with the cheaper feigao's. for me, they are perfect.


take care,
Demon

[porra]

Here are some pics I took of different motors I have:

http://www.r c p i c s.net/view_single.php?medid=85850
http://www.r c p i c s.net/view_single.php?medid=85849
http://www.r c p i c s.net/view_single.php?medid=85843
(Please remove the spaces)
In the pics you can see the 88mm long motor has one big magnet. The magnet in that motor is the strongest I've seen. The magnet of the Hacker C50 is very intersting. It uses discs and plenty of it. It is also wraped with Kevlar.The last pic shows my 7XL and the 88mm long motor.

[glassdoctor]

Feigao is definitely capable of making a higher quality, better built motor. Look at the Trinity, Orion, Speedpassion etc motors that they make.

I'm hoping that what is happening now (with the lack of 540XL Feigao availability for several months) is that they are upgrading this line of motors to a new "Orion" style that is rebuildable.

BTW, the Feigaos run fine.. but they do run HOT compared to Neu

[Demon-TC3]

Thats the thing glass doc - maybe i am VERY lucky, but on 14 IB4200's i can run this thing untill the cells dump and the motor is warm - never hot....and i bash this thing HARD! i just dont get it... i would gear up but i dont think my cells can handle it...


im sure Feigao are up to something, you dont just stop building a motor for the hell of it, and the fact that they sent me a different rotor to standard implies there is re-designing happening.


take care,
Demon

[starluckrc]

I think you are reading way too much into it. It's very simple. I was a huge supporter proving plenty of feedback and distribution to other US dealers and a few overseas. I established warranties, instructions, and helped them all I could to get brand recognition as well as contacts with US companies. I got repaid with UH allowed to sell barely over wholesale cost. You don't see the stock because I am not distributing Feigao anymore.

[Demon-TC3]

damn, im sorry to hear that jamie... thing is though, that UH have not sold a feigao motor for the ast 4 or 5 months now, they have been out of stock for a very long time...


take care,
Demon