Sorry, but I gotta ask it...

[NitroVal]

Im sure its been asked a million times, but what is the upper RPM limit a Neu/Fiegao motor will take. Lets say a 540, 60ish mm length can with a 442 prop on it.

[domwilson]

A Feigao has 50k bearings and a Neu are 60k bearings. But you don't want to go near those RPM's on either if you want longevity.

[ozzie-crawl]

i think the upper rpm limits given for the bearings would only be used in a reduction gear system

[NitroVal]

Yea, I know they have an RPM limit on the bearings, but that doesnt necessarily mean the windings or internals will stay together at that RPM, would they?

[Fluid]

The windings don't move so they fail by excess heat or scraped lacquer. Some magnets are cracked or not properly glued and will come apart long before 50,000 rpm. I have wound-out Fiegaos into the mid-45,000 rpm range under load, but I have seen others spit magnets at far fewer rpm. Because build quality varies, there is no real answer.



.

[BakedMopar]

I have had my feigao 12l at a little over 51000 rpm. I would not recommend it. I currently run my 380 8l on 3s so it's spinning above 43000rpm.

[FloatDaBoat]

I have had my feigao 12l at a little over 51000 rpm. I would not recommend it. I currently run my 380 8l on 3s so it's spinning above 43000rpm.

Are those RPM figures based on motor KV ratings, or did you log them during actual runs?

[BakedMopar]

Those were logged. 12l was on 6s.

[hide]

Nic Case ran a Neu 1521 1Y at over 100k rpm in his speed car to run 161mph, that said I'm sure it will only last a few runs.

[Tuslow1]

100,000 rpm, can you say high energy compact BOMB!!!
:flashfire: :hide: :flashfire:

[Simon.O.]

I have done a few or more passes, on different days, with a 540-7S on 3S to a 432 for a good mid 40krpm. I do not reccomend it if you want to use the motor next week.
It did work for me to pull over 100kmph (Police radar) with my smaller 26"rigger :smile:

[hide]

100,000 rpm, can you say high energy compact BOMB!!!
:flashfire: :hide: :flashfire:

I think the trick was that he geared the motor so highly that it never reached that. Although mathematically it should go over 100k he used a 3 speed gearbox to keep the revs down. Not too sure if he succeeded as I haven't seen him use the motor again :laugh: