Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > R/C Electric Power - Batteries, Chargers, ESCs and More > Power Systems
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

Power Systems Talk about motors, ESC speed controllers, gear drives, propellers, power system simulators and all power system related topics

Thank you for your support (hide ads)
Reply
 
Thread Tools Display Modes
Old 06-06-2014, 10:44 PM   #1
Davethebluessinger
Child of the 60s
 
Davethebluessinger's Avatar
 
Join Date: Sep 2010
Location: Rugeley, Staffordshire, UK
Posts: 1,069
View Davethebluessinger's Gallery4
Thanked 18 Times in 16 Posts
Club: Longdon Flying Club
iTrader: (0)
Friends: (9)
Default Motor will not turn - just stutters

Hi can anyone help me here please?

Setup
Turnigy 2836/8 1100KV (new)

(http://www.hobbyking.com/hobbyking/s...u8IV7cmnPD_BwE)

HK AE-20A 30amp ESC (new)

http://www.hobbyking.co.uk/hobbyking...hless_ESC.html

I've read the Chinese manual and the manual under the ESC product description in the "Files" tab.
I understand the beep codes and the throttle stick position to set the functions but no matter what I do the motor will not turn - it just stutters even when the prop is attached.
Tried rebinding, switching wires over etc but still no joy!
ALSO, The ESC works OK with an Emax 1200KV motor! which points to the Turnigy motor.....

Any thoughts folks?

EFlight Mini Pulse XT, Durafly Dynamic S, Scratch Built 52" Pushycat, HK 330 Edge Profile, HK Mini Spirit, Thunder Tiger EHawk 1500.
Davethebluessinger is offline  
  Reply With Quote
Old 06-06-2014, 11:10 PM   #2
dahawk
Super Contributor
 
dahawk's Avatar
 
Join Date: Jul 2011
Location: Keller, TX
Posts: 3,387
View dahawk's Gallery6
Thanked 205 Times in 201 Posts
Club: 114th RC Aero Squadron
iTrader: (0)
Friends: (19)
Default

Mmmm. I recall something similar. Have you looked at your throttle idle?

Have you tried an esc reset ? Sometimes the throttle range gets out of whack.
dahawk is offline  
  Reply With Quote
Old 06-06-2014, 11:27 PM   #3
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 2,171
Thanked 216 Times in 207 Posts
iTrader: (0)
Friends: (1)
Default

most likely a bad connect between ESC and motor or something preventing the motor from turning freely.

Bad connect includes arcing between the gaps in the connectors .... cover the connections with heat shrink tube.
fhhuber is online now  
  Reply With Quote
Old 06-06-2014, 11:27 PM   #4
Davethebluessinger
Child of the 60s
 
Davethebluessinger's Avatar
 
Join Date: Sep 2010
Location: Rugeley, Staffordshire, UK
Posts: 1,069
View Davethebluessinger's Gallery4
Thanked 18 Times in 16 Posts
Club: Longdon Flying Club
iTrader: (0)
Friends: (9)
Default

Thanks or responding guys.

All connections are freshly soldered and heat shrink wrapped.

How do I carry out a reset?
Throttle idle? TX is DX7 (old model)

EFlight Mini Pulse XT, Durafly Dynamic S, Scratch Built 52" Pushycat, HK 330 Edge Profile, HK Mini Spirit, Thunder Tiger EHawk 1500.
Davethebluessinger is offline  
  Reply With Quote
Old 06-06-2014, 11:41 PM   #5
dahawk
Super Contributor
 
dahawk's Avatar
 
Join Date: Jul 2011
Location: Keller, TX
Posts: 3,387
View dahawk's Gallery6
Thanked 205 Times in 201 Posts
Club: 114th RC Aero Squadron
iTrader: (0)
Friends: (19)
Default

Turn on TX and set throttle to high. I do this with the prop off but just e cautious. Then plug in battery and wait for the beeps. as soon as they stop, move throttle to off position. See if that works.

One more thing. You might try reversing your your throttle on your TX and see what happens.

Hawk
dahawk is offline  
  Reply With Quote
Old 06-06-2014, 11:42 PM   #6
JetPlaneFlyer
Super Contributor
 
JetPlaneFlyer's Avatar
 
Join Date: Mar 2009
Location: Aberdeen, Scotland
Posts: 4,426
Thanked 490 Times in 456 Posts
Awards Showcase

5kW  Outstanding Contributor Award  1kW 
iTrader: (0)
Friends: (8)
Default

I've seen the same thing a few times, usually it's caused by a bad solder joint on one of the ESC to motor bullets, or a bad connection between bullets. It could also be a broken or burned out wire in the motor (though if the motor is new that's not so likely). Or it could be a faulty ESC, or occasionally it's just a incompatibility between ESC and motor.

Double check the bullets, you didn't by any chance cut the motor wires before soldering on the bullets did you? If the bullets check out then to narrow it down the easiest way is to try another ESC or another motor and see where the fault is. Playing with the ESC programming is unlikely to help and if the motor stutters when you apply throttle then that proves that the Rx is receiving signal and the ESC is armed, so re-setting throttle calibration or re-binding wont help.
JetPlaneFlyer is offline  
  Reply With Quote
Old 06-06-2014, 11:48 PM   #7
Davethebluessinger
Child of the 60s
 
Davethebluessinger's Avatar
 
Join Date: Sep 2010
Location: Rugeley, Staffordshire, UK
Posts: 1,069
View Davethebluessinger's Gallery4
Thanked 18 Times in 16 Posts
Club: Longdon Flying Club
iTrader: (0)
Friends: (9)
Default

I haven't shortened any wires.
I only fitted the Turnigy motor (70g) to add a little more nose weight as I could not achieve correct CG with the (54g) emax i had fitted previously, the emax worked perfectly with the same ESC. I'll refit that and see if it's OK, if it works alright I'll check the soldering on the motor bullets on the Turnigy motor (these were already soldered at factory)

EFlight Mini Pulse XT, Durafly Dynamic S, Scratch Built 52" Pushycat, HK 330 Edge Profile, HK Mini Spirit, Thunder Tiger EHawk 1500.
Davethebluessinger is offline  
  Reply With Quote
Old 06-07-2014, 01:49 AM   #8
gramps2361
Community Moderator
 
gramps2361's Avatar
 
Join Date: Dec 2008
Location: oxford, MA
Posts: 6,667
View gramps2361's Gallery9
Thanked 602 Times in 597 Posts
Club: Rocky Hill Flying Circus
iTrader: (3)
Friends: (21)
Default

I had a eMAX motor do the same thing found out it was the factory solder that was the problem. Cold solder joint redid it and the problem went away. Good luck with the fix.
gramps2361 is offline  
  Reply With Quote
Old 06-07-2014, 07:40 AM   #9
solentlife
Super Contributor
 
solentlife's Avatar
 
Join Date: Oct 2010
Location: Ex UK Brit now in Latvia west coast - Ventspils
Posts: 6,111
View solentlife's Gallery47
Thanked 261 Times in 258 Posts
Club: Founder Member Ventspils RC Club. Ex Waltham Chase and Meon Valley Soaring.
Awards Showcase

Scratchbuilders Award  Scratchbuilders Award  Outstanding Contributor Award  125mph Speed Demon 
iTrader: (0)
Friends: (15)
Default

Originally Posted by dahawk View Post
Mmmm. I recall something similar. Have you looked at your throttle idle?

Have you tried an esc reset ? Sometimes the throttle range gets out of whack.
It's not throttle range as he tried esc with another motor and was fine.

My thoughts are break in wire ... hidden by insulation ... bad contact in a soldered bullet joint ......

Now as he has already tested the ESC with another motor and works fine - that indicates ESC and it's own leads are fine. It all points to the Turnigy Motor. I have had stuttering - and that's been due to lack of 3 wire contact .. so the required 3 pulse format is not received by motor ... if one wire is bad - then the motor can pulse or stutter .. it's happened to me ..

So to OP ... check those motor leads carefully ... metering is no good as usually a bad joint will still show OK on Ohms on a domestic DMM ... it needs a much more sensitive instrument. Pull the bullets ... even reheat with soldering iron and set the joint again ... make sure no insulation has got into the solder joint ...

Finally .. do a resistance check of each coil set on the motor .. pair up motor leads so that you confirm no broken stator wires ...

Does the motor spin freely by hand without power ? OK you may feel some cogging as magnets have their effect when soft iron passes ... but does the motor turn OK ..

Nigel

222kph PKJ,EDF Concorde, Mini4,Mig3,T45,PKJ twin,ME109,Edge540,Cessna182,Skymaster Biplane,F15,F16,Badius,Ultimate,SE5,Qbee10,450 Heli,V911,J3 Cub Founder 9x forum: http://groups.yahoo.com/group/Flysky_RC_radio/
- Subscribe my Youtube: "solentlifeuk"
solentlife is offline  
  Reply With Quote
Old 06-07-2014, 11:12 AM   #10
Davethebluessinger
Child of the 60s
 
Davethebluessinger's Avatar
 
Join Date: Sep 2010
Location: Rugeley, Staffordshire, UK
Posts: 1,069
View Davethebluessinger's Gallery4
Thanked 18 Times in 16 Posts
Club: Longdon Flying Club
iTrader: (0)
Friends: (9)
Smile Sorted!

Many thanks for all of the responses I received.
Replaced the Turnigy motor with the emax that had previously worked ok with the ESC and now that stuttered too!
So now it had to be the ESC. Trimmed back the shrink wrap and reheated the solder joints where the wires connect to the ESC circuit board and hey presto! Bad solder on the ESC that got disturbed I guess!

EFlight Mini Pulse XT, Durafly Dynamic S, Scratch Built 52" Pushycat, HK 330 Edge Profile, HK Mini Spirit, Thunder Tiger EHawk 1500.
Davethebluessinger is offline  
  Reply With Quote
Old 06-07-2014, 01:35 PM   #11
gramps2361
Community Moderator
 
gramps2361's Avatar
 
Join Date: Dec 2008
Location: oxford, MA
Posts: 6,667
View gramps2361's Gallery9
Thanked 602 Times in 597 Posts
Club: Rocky Hill Flying Circus
iTrader: (3)
Friends: (21)
Default

Glad you found the problem and you have it fixed.
It must of been a Monday morning when the worker did the solder job.
gramps2361 is offline  
  Reply With Quote
Old 06-08-2014, 05:11 PM   #12
Davethebluessinger
Child of the 60s
 
Davethebluessinger's Avatar
 
Join Date: Sep 2010
Location: Rugeley, Staffordshire, UK
Posts: 1,069
View Davethebluessinger's Gallery4
Thanked 18 Times in 16 Posts
Club: Longdon Flying Club
iTrader: (0)
Friends: (9)
Default

Or a Friday afternoon at 5 minutes to 5!!!

EFlight Mini Pulse XT, Durafly Dynamic S, Scratch Built 52" Pushycat, HK 330 Edge Profile, HK Mini Spirit, Thunder Tiger EHawk 1500.
Davethebluessinger is offline  
  Reply With Quote
Old 06-30-2014, 05:20 PM   #13
frankmo
New Member
 
Join Date: Jul 2011
Posts: 7
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default Similar problem

I had the same motor problem. Sometimes it would seem to be ok. On each flight I tried it shut down, and my spinner came down broken.

After those flights it just stuttered. I double checked everything and tried a different speed control. I decided the motor must be broken.

My motor is connected with Castle 3.5 bullet connectors. I tape these connectors. As I was untaping one of them the male connector just fell out.

I respreads the prongs on the male, and then the motor worked fine. I replaced all those connectors and all is good now.
frankmo is offline  
  Reply With Quote
Reply

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > R/C Electric Power - Batteries, Chargers, ESCs and More > Power Systems

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
The VictorValley High Desert Flying Aces Rolling Thunder Informal Clubs 2925 09-17-2014 10:12 AM
Wanted WTD: Astro Flight 010 10 turn motor Turbojoe Motors and Speed Controllers for sale & WTB 0 03-09-2013 09:54 AM
Staying up wind AEAJR Beginners 9 02-13-2012 04:24 AM
Staying up wind AEAJR Wiki Discussion Threads 1 06-20-2011 11:43 AM
Blade CX2 Blades will not turn bschreffler Beginners - Helis 3 12-26-2010 03:41 PM


All times are GMT +1. The time now is 10:12 PM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation



Page generated in 0.24915 seconds with 45 queries