Hi Guys  ,

I am facing a strange issue with my brushless motor!!!!! 
Whenever I start increasing  the throttle, at around 70% prop RPM reaches max and after that there is no increase in RPM till 100% throttle. I tried different props and of course without prop, but same thing happens. I actually didn’t measure RPM using any meter, but I observed the sound of the motor and I  have concluded that it’s not increasing (May be I am wrong judging motor RPM this way) but I also noticed there is no increase in power while holding in hand and while flying!!!! I do have some Turnigy motors but I am not facing this issue with those!!!!!!

The motors I am talking about are:
1.   FC 28-05 Brushless Outrunner 2840Kv: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=5353 with TURNIGY Plush 25amp Speed Controller on 3S lipo
2.   EMAX CF 2822: http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=58_59_93&products_id=391 with TURNIGY Plush 25amp Speed Controller on 3S lipo
3.   C20 brushless Outrunner 2050kv: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=6634 with TURNIGY Plush 18amp Speed Controller on 2s Lipo

I am using same ESC for both option 1& 2 swapping at field whenever needed. I do have some Turnigy motors as well with HXT ESC but I am not facing this issue with those motors. I also had combination of above Turnigy 25A ESC and hexTronik 24gram Brushless Outrunner 3000kv, it also worked just fine, without any issue!!!

I am not sure why I am facing this issue but seems like motors are not able to deliver full power because of this. That is why I am posting this issue so that if anyone can address this!!!

I started to doubt that if  ESC timing got to do something with this? And how ESC timing which is generally low, mid and high affects motor, how to decide what is correct timing for motor? I do have programming card for these ESC. I never tried changing timings, but if anyone could tell me understanding how it affects motor then I think I will give it a thought!!!!

Just in case, my TX is JR 7202 & DX7, RX  Corona 72 Mhz synthesized and spectrum AR6110.

Plssssss help!!!

The range over which power is delivered is set by letting the ESC learn the max throttle position (usually done by powering up the ESC/motor with the throttle set to highest on the stick, then reducing it to lowest).

I am a bit confused by your long description above, on what combinations are working and what are not, so the above point may be irrelevant.

i never tired this, i usually start with throttle at min, so i will give it a try!!

hmmm.... yes its little long......
the combination mentioned with points (1,2&3) is not working, rest others are examples in which i am facing no issues!!!

Please do keep away from the prop and secure the model the first time you try this, in case the ESC does not recognize the max throttle as an attempt to teach it and decides to take-off instead !

yes of course!!!! but i think most of the ESC hav safety feature, and doesnt arm unless throttle is set to min and most of my ESC have this feature!!! if it si not set to min after powering up then it keeps on beeping!!!!

one more thing any idea about ESC timings!!!!

Dont increase the ESC timings for these motors, it may even burn them, Increasing the timing increases the frequency of the pulses sent to the motor. This is great for big motors which required lots of power and more poles are present, though not recommended for small ones.

Just do a throttle range setup w/o the prop on the motor as anwar suggested.