hobbywing ezrun 150A vs Mamba monster

[superek4]

Originally Posted by hemiblas

Guys, something to consider about the MMM vs EZ run reliability. There are literally thousands of MMM out there right now. To have some of them go bad wouldnt be all that strange to hear. There arent that many EZ run 150's out there so we would not be hearing about their failures as much. Just my 2 cents though.

that's not extactly true, it's the one on one exchange n free repair service that cc offer that's y there's so many supporters. ESP in U.S it's so easy for repairs. I m from Asia n I hv to wait at least 1 mnth to get it back.

Less ppl in Asia use mmm that states, Ep 1/8 is a big thing in states then anywhere else in d world.

I use hw150 due to failure of 2 mmmv3 in less than 6mnths. I tried HW n found it cheap n reliable so y not?

[tom255]

Does anybody run Ezrun 150/80A ESC with NEU's or CC2200 or CC2650 motors?
I have seen couple bad reports about NEU and Ezrun 150A and also my friend have problem with Ezrun 150A and Teckno NEU 1515 2700KV motor. Coging is noticeable.

He seriously think to sell this ESC unless coging can be fixed with firmware, he is ready to buy advanced programming card but nut sure does it fix... With feigao it runs as supposed.

[superek4]

Originally Posted by tom255

Does anybody run Ezrun 150/80A ESC with NEU's or CC2200 or CC2650 motors?
I have seen couple bad reports about NEU and Ezrun 150A and also my friend have problem with Ezrun 150A and Teckno NEU 1515 2700KV motor. Coging is noticeable.

He seriously think to sell this ESC unless coging can be fixed with firmware, he is ready to buy advanced programming card but nut sure does it fix... With feigao it runs as supposed.

I use a ez150amp with medusa motors no problem. Timing set to 8-11 no cogging.try changing the timing

[tom255]

Yes with MEDUSA motors it works i know but NEU's and CC-NEU's?

[Aceldama]

Originally Posted by tom255

Yes with MEDUSA motors it works i know but NEU's and CC-NEU's?

Did you try using the timing settings like Super suggested?

[tom255]

Yes he tried all way to 18.75 degrees. Same, not much difference.

[Aceldama]

Can we get some more information?

What batteries is he running?
What is the gearing and tire size?

[tom255]

Truggy:Xray XT8, RTR weight 4400g~9,7lbs
Motor: Neu 1515/1.5D/Q Tekno
ESC before fail: Mamba Monster V3
New ESC: Ezrun 150A
Batteries: Zippy-H 4S1P 5000mah
Tires: Proline BowTie LPR
Spur 46
Pinion 13
Geared to ~43Mph

Dont understand me wrong it not cogs extremely but in some circumstances delay is pretty high and start is rough. To compare, MMM is silky smooth.
Gearing not issue, it ran fine before on MMM. MMM failed because ran in heavy snow and ESC was wet, after snow bash went to home and tried after a while turn ESC on and sudenly made puff and magic smoke came out.

BTW tried 26.5 timing on Ezrun 150 and ESC now refuse to start, its dont do nothink cant reset to default settings too :(
Power is on, Fan is on, RX and Servos have power, but ESC not start, unable to program with programming card or set button.
Damn that frustraiting

[lutach]

You should've used 0 or the lowest timing for the D (Delta) wound motor. Timing is only good for Y (Wey) wound motors.

[tom255]

Originally Posted by lutach

You should've used 0 or the lowest timing for the D (Delta) wound motor. Timing is only good for Y (Wey) wound motors.

Never heard that, I know that higher timing for higher pole cont motors, thats it, never heard that it related with Delta or Y wound.
Where you heard that, where i can read about that?

[lutach]

Originally Posted by tom255

Never heard that, I know that higher timing for higher pole cont motors, thats it, never heard that it related with Delta or Y wound.
Where you heard that, where i can read about that?

Steve Neu.

Edit: Also from my own mistakes in the past 15yrs. That's why I would reather have a Y motor thn a D. I also found that the Y also makes better Kt or torque.

[snellemin]

Originally Posted by tom255

Never heard that, I know that higher timing for higher pole cont motors, thats it, never heard that it related with Delta or Y wound.
Where you heard that, where i can read about that?

I copied this from EzoneMag.com


In a brushless motor system, what's the difference between a delta wind and a wye wind? What are the advantages and disadvantages?



Q. In a brushless motor system, what's the difference between a delta wind and a wye wind? What are the advantages and disadvantages?

A. Matthew Orme, Aveox Inc. mailto: 102252.401@compuserve.com

Get a pencil and paper for this.

"Wye" wind Motor

Draw 3 resistors (or coils) radiating from a central point (The Wye tie). label the three ends A, B, and C. These represent the three phase connections in the Wye motor.

In the controller, each of these has 2 pair of MOSFETs connected to it, a pair to source the current, and a pair to sink the current. The motor fires something like this (simplified for clarity) A-B, A-C, B-C, B-A, C-B, C-A ad nauseam. The Magnets 'chase' the rotating magnetic field. Notice that there are always 2 phases 'commutated' at the same time, but the mix differs, and the current direction will reverse every other time. The motors resistance is the sum of any two phases i.e.. measure from any 2 phases. the third phase is open electrically when any other 2 are commutated.

"Delta" wind Motor

Draw 3 resistors connected in a triangle (delta). Each of the vertices is a phase. When you commutate CA-AB, you get most of the energy on one coil, (A), but some on (A-C-B) side. (mostly losses imo). The net result of most of the current going through one set of coils at a time, instead of 2 is that the Kt is cut in half and Kv doubles.

At Aveox, we have essentially deemed the Deltas as secondary to Wye winds in any application, except where very high degree of uniformity in both directions is very important. Things like robots that move in both directions equally put up with the efficiency losses. Since the motors are very insensitive to timing changes (unlike the Wye winds), you don't have great performance in one direction, and poor in another (without adjusting the timing), you have good performance in both (but it isn't worth the losses in a model).

They have been discontinued at Aveox for a couple of years. We do whatever we can to get them out of circulation, by changing them over at a loss. (But they are really easy to make if you insisted, and I would feel guilty afterwards). When you finish winding a stator, you have 6 wires coming out, the start and finish of each phase. connect every other one together to make the wye tie, or adjacent pairs to make the delta.

[lutach]

Mathew Orme for who doesn't know the man, is one of the brushless gurus. He's the man behind the Razor motors which Neu now makes since Mr. Orme is going through some tough times with cancer and I wish Mr. Orme all the best to fight it off.

[tom255]

Good info
Nice to know, now again bit smarter.

Lets return to the problem, what wound is 7XL feiagao Y or D? And can be related rough start of Ezrun 150 with wound type?

Damn dont know how to awake Ezrun now.