RC India

i have purchased a new motor. setup using a 30 A Esc and 1000 mah 3S 25C lipo

http://www.aeroworks.co.in/motors_1304.html

the problem is that motor shut offs after certain rpm? i dont know what's happening but plane cant fly with low rpms like that, i have tried several props, problem seems same. here is the video showing that, any help appreciated.

http://www.youtube.com/watch?v=k3lgfqvvC28

did u check with different ESC? the signals from the ESC is screwed up on the lower end of the throttle, try programming the ESC to factory settings

I think it's an ESC issue. Pls post which ESC you are using. Maybe you need to set the throttle range of the ESC before programming. Also check the throttle curves pls

Sujju

http://www.emaxmodel.com/views.asp?hw_id=1009

that's the esc i am using. i am not much aware about throttle curves. :) newbee in that.

I've had a similar problem... it turned out to be the battery voltage. The ESC had a low voltage cutoff, so the ESC shut down. It was on till 30% throttle, but stopped the motor after that, so I recharged the LiPo and it worked fine.

Vineet

ok i will charge the battery full, however i am never sure of when its full charged, i have very basic "rcforall" charger which have only two lights, one is red that denotes power, one is green one, but it just blinks once when i connect the battery and then it goes off, i dont know if its charging or not and when its charged, should i go for "IMAX B3" charger or more advanced one?

Buy a multimeter for Rs.150-200. Stop charging when the voltage is 12.6V (For a 3S LiPo).

i have a multimeter, its good to know to charge it upto 12.6 and what is the storage voltage?

The storage voltage is 3.7V-3.9V per cell. So keep it between 11.1V to 11.7V

Vineet

thanks, charging the battery, i will put the results after check.

checked with full charged 12.2 volts battery, still the same problem, also checked with other motor, so definately problem is with my ESC i guess. cause i checked the tx on T6Config, throttle works to the upway full. any inputs its really frustuating and also now i know why my last plane coro slow stick crashed, because when i wanted to stablize the plane i made full throttle as the plane was heavy and motor stopped like it does and plane crashed. DAMN not my fault and planes.

anybody please help me, i cant fly again half throttle :(

dude replace the ESC and check out. You might be able to narrow down the cause of the problem.

Hi,

On transmisster side:-

1) Software programming- After connecting your Tx with PC, running under progemming mode, Check if you can see full bars on PC for full throttle while operating throttle physically.
2) Check on Rx side by connecting throttle on a different physical port if works fine (hope you checked it alternatively using another port for throttle- on Rx module), if it does, then there is triggering happening , but chances of such issue are miniscule.

On Battery side:-

3) Check for "current drawn" by battery if you have a multimeter, almost all LiPo/NiMH/NiCd storage cells tend to show the correct voltage irrespective of current drawing capacity when no considerable load is connected.

To check this connect your cells to a "resistance" (1W or 4 W minimum, ceraminc ones) equal to the resistance of the motor or circult when full throttle ( if you can do that, otherwise direct plugin can also do the job), connect this resistance in series, select the multimeter for measuring current in amperes (select highest rating, 100 A rating) and measure the current, wait for 1 or 2 secons for this current to settle up. please be caucious if your multi meter doesnt have any higher current measuring capacity, do not try this. You may directly connect motor to the battery & check, this will be conditionas in full throttle.

Your issue SEEMS likeiy because of battery not charged properly.

If all above conditions pass:-

On ESC Side:-

4) Your ESC is faulty or needs programming.

Alternatively, if you have a spare ESC, check alternatively to cut down on above long procedures.

hope this helps.

Cheers & good luck.
-Sandeep

Quote from: Sandeeppande on June 11, 2012, 09:37:11 AMconnect this resistance in series, select the multimeter for measuring current in amperes (select highest rating, 100 A rating)

But most multimeters available here aren't capable of handling currents beyond 10A, coderbanna might require a wattmeter.

Yes, I too feel it's because of battery not fully charged.

Checking with another ESC would help. :)

Vineet

check with another spare esc , or change radio and receiver

another motor setup with 6" prop goes uptil full throttle, while new motor with any prop and old motor with big prop cuts in half throttle, new motor is 250 watt (much higher than old motor), so this issue seems to be related with watts used and cut off, still not sure what it is? i think the culprit is ESC, i dont have another, i have to order new one. battery seems fine, i charged it upto 12.5 volts and checked.

bump

Hi Coberdana,

plesae check your battery's current capacity. i doubt that, all setups have different current requiremets, presently you do not have any spare ESC, would you have a spare battery?

If yes, please replace it. i am sorry i have to advice you hit & trial as we are not working here with professional equipments.

So please try using an alternative battery and let us know the results, i am sure you may be having one.

Thanks
Sandeep

today i will post a video showing everything in detail from transmitter settings to battery voltage, and diffrent prop testing with two diffrent motors on same ESC. then everyone can  have better idea.

hi guys,

i was not able to make video till now as sometime battery voltage is low, or sometime tranmitter battery goes low. anyway what i figured out is that, if i put smaller prop (6x4) throttle cut off range goes high that mean i can give more throttle than half and it goes cut near full throttle, while with bigger prop (10") it cuts near half throttle or just before it. any ideas... ?

Dear,

Please replece or check the battery, alternatively just run the motor with propellor for long ( at whatever throttle it runs with any propellor) and see how long does it last, compare with standard time it should last otherwise. if battery is able to sustain and release that much charge then ESC is culpret, otherwise it is battery.

i hope this will help to know on the condition of battery atlest.

thanks

i had already run my moon buggy with 6" prop for more than 5 minutes. however may be today or tomorrow i am going to run moon buggy again in desert, hope to know the results.

You need to perform a ESC throttle range calibration,

Here is the method

1. Turn your Tx on move the throttle stick to top 100%
2. Now remove the prop from the motor
3. Connect the ESC to the motor as normal
4. Connect the battery to the ESC
5. as soon as you connect the battery to the ESC you will hear 2 short beeps from the motor, at this time immidiately move your throttle stick to zero position and now you should hear your normal ESC initialization music or beeps
6. disconnet the battery from ESC
7. Next time keep the throttle at zero on tx and fly as normal.

Now your ESC is calibrated with your throttle and should work fine. Hope to hear some positive results.

Hellyflyer

I checked full battery on my buggy, it worked for full 20 minutes with higher throttle for much time, so on a plane it can easily give around 7-10 minutes.

fpv video attached :D

www.youtube.com/watch?v=BVyQXYj7SHw

http://www.youtube.com/watch?v=SFQ_JSOKe2w

problem with bigger prop still remains.

hi coderbanana is that a live fpv feed recorded through a DVR or just an onboard camera

Subbu

:D its just a nokia 5233 phone camera. there is no point adding real fpv on a car as people are too curious here, if your car get out of sight, its going to vanish anyway.

hello,

Did you found soution finally? What was the issue? Or this is still unknown...

Thanks,
Sandeep

Still unknown , however in my last crash battery got hit and puffed (damn small flying field i found), so i stopped flying for now in lack of decent flying field here, right now just giving more time to realflight 4.5 improving my skills.

Can u share how to use and where to get what for simulator on flysky 6 ch

hi coderbanana my solution might seem rudimentary but i had the exact same problem as yours exactly to the point. i had a dys 2212/10 motor with a 40A esc on my easyfly glider. i had used local esc to motor connectors, ones with screws locking two wires together. i was just checking my glider after about 6-7 months i powered on the motor i had similar throttle cut on the motor.

the solution (to my problem and most probably to your probably) it was the motor to esc connection. i had only about 3-5 strands of copper wire holding one of my signal wires on the motor after much deliberation i found this solution. i just removed a bit more of insulation from the wire exposed the lot of the wires sanded them a little but them back on my cheap screw on connector and voila it was working perfectly.

since your esc as you mentioned earlier can handle the 6" prop setup but not the new and old motor with bigger prop kindly check and make sure all your connections are nice and strong, due to earlier success with 6" prop setup i hardly think the problem is with the esc so as soon as you get the new battery (as you state the earlier one was puffed - see if it was just air puffed if yes check the battery voltage if it shows proper voltage on all cells wait for a couple of days and try charging it again - do not try this if the battery was disfigured of heated up in that case use caution and dispose it off carefully) please try out this solution and then if it doesnot work you can go ahead and try with another esc or program and calibrate your esc.

Subbu

Few days back my motor CF2822 hit the ground , and after that i faced the same problem.
To my surprise the motor run good on free load but after connecting prop, it just goes to half throttle and then stops.
I checked all my connections and after much head scratching i saw that ,the winding of my motor was with 3 wires bunch, one wire was broken at the junction. means within the bunch of 6 wires there were only 5.
What i think (may be wrong) is  that when the wires broke like that they are not enough capable to provide more current to the motor when we apply more throttle, which may be reason of its sudden stop after giving more throttle.
I re winded the motor and now it works fine.

sure will make a complete thread on it, may be after two days or so, i am using my flysky ch transmitter with aerofly pro deluxe or real flight 4.5, however i find realflight more real :)

also i use a power adapter with transmitter instead of cells so i dont have to worry for low batter :)

Hello Mr. CB
*I OBSERVED NO PROBLEM IN ESC IN VIDEO IT'S PERFECT*
Please Follow the Instructions Here.

Step1: Push the throttle stick to the top position (full On throttle),
Step2: Switch the transmitter on,
Step3: Switch the ESC on (normally by connecting batteries)
Step4: System detects the Max. throttle signal, and makes two “beep” sounds, which denotes that Max. throttle has been confirmed and   
          saved. (If you hold the throttle stick on top position  after this step, you will be led to transmitter programming mode.)

*SOUNDS*                                    (OPERATION)        (INTERNAL)          (PARAMETERS)                  (Things you need to set)
                                                                                BEEPS     

BIP                                                BRAKE TYPE             3              off/softbrake/hardbrake          OFF
BIP BIP                                           TIMING MODE           3              low/mid/high                         HIGH
BIP BIP BIP                                      START MODE            3              fast/soft/verysoft                  FAST START
BIP BIP BIP BIP                                 CUTOFF  MODE         2              softcut/cutoff                      SOFTCUT
BEEEEEEEP                                      THROTTLE CURVE      3              curve1/curve2/curve3            CURVE 1         
BEEEEEEEP   BIP                               LIPO                       4              2S/3S/4S/AUTO                    3S/AUTO(last beep)
BEEEEEEEP   BIP BIP                          CUTOFF VOLTAGE     3              low/mid/high                         MID
BEEEEEEEP   BEEEEEEEEP  BEEEEEEEP   MOTOR ROTATION     2              Normal/Reverse                     NORMAL

AND FINALLY PUT THE THROTTLE STICK DOWN TO CONFIRM THE SETUP

@bLoGgEr  thanks :) this is nice info to keep in notebook. but for now i sent that ESC to VC sir, he will sort it out

thanks :)