why is a neu better than a feigao?
 

simply, a neu is more efficient. But why?

don't give me the "4 pole" answer, I know that, so let's then compare a lehner and a feigao.

Both are basically the same. Winds in the can, a rotor with magnets in the middle. And feigaos actually perform well if you follow all the rules.

So, technically, what makes a good motor better?

Efficiency, which is the result of better materials, construction techniques, etc. And even a couple percentage points in efficiency can make a huge difference in motor temperatures at the power levels we run.

Castle creations explains it well

thanks guys. can anyone elaborate on the construction techniques?

It costs more so therefore it MUST be better:lol:

Neu is better cause it costs more, DUH!!!

You're just mad cause I have been chatting with hot babes on the internet all day!

Well, neu uses higher quality laminations, as well as better magnets. Plus the neu design just seems to be superior for the applications we use. I have owned the best 2 pole motors (hacker c50 and lehner) and the added torque that the 4 pole makes along with the larger diameter rotor seems to be the ticket for the various rpm load demands we place on the motor.

Properly cooled the feigao seems to be decent, but with the cc neu motors you really can get a good deal on a well built 4 pole motor. Not sure if the cc neu is as good as the reg neu, but it is close.

makes sense. I learn so much here.

:yes: Yes, Yes I am!:lol:

Just about everythig I know about rc has come from here and experimenting. This really is a great forum!

Thought so. Don't be mad, I told them that you and your "partner" would be happy to go shopping with them!

Just to elaborate on the laminations a bit more... the laminations play a large role in the efficiency of there small motors because when you have a magnetic field at a decent frequency on a piece of iron, it will heat up, it heats up because it causes 'micro turbulence's' within the field and causes little whirls of current, or 'Eddy currents', these currents are basically micro shorts, which are doing NO work, and making only heat as the biproduct (also affects magnetic strength a small amount). The higher frequency you go, the more heat is created in this manner, basically a linear curve, that's why when you add enough cells to a setup the rpm's increase, and this causes lot's of heat buildup, in particular a feaiaiago motor is cursed with this symptom. This happens because iron is conductive... NOW, if we were to make very thin sections of this iron and electrically insulate each lamination with a resin/bonding agent, then the Eddy currents are much smaller, and thus less heat is created, and less energy wasted equals more energy to make motive power, hence a more efficient motor.

Just plain tolerances/quality control make a better, more efficient motor as well, which the feiaiaiaieiegao's are missing.

Shouldn't there be a sticky post on this kind of stuff here? This is RCM! :mdr:

So if you were to use very small guage winds wire for windings the motor would become more efficient compared to the same motor with larger guage winds?

thanks zeropointbug, that's more of what I was looking for

i thought you only "experimented in college", I knew you were still curious!

Yeah, still curious, but not bi-curious like you Harold... I still to women, singles or multiples if at all possible. I even try to make sure the camera-person is female, but that is not always possible.

also if you look at the inside can/windings of the higher quality motors.. You will notice that the windings are "tight" and "even".. Whereas if you were to look inside a cheap motor, you would find all kinds of spaces/gaps.. and after a while.. lots of corrosion on the windings itself... Some of the KB45 windings are just plain awful.. and some are good. The worst one I've seen had a gap where my pinky would fit into it, can't beleive it still ran ok...