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cogging? - 7/14/2008 5:16:26 PM   
Dragonfly2k3


 

Posts: 92
Joined: 11/1/2004
From: , PA, USA
Status: offline 		how do you get rid of it.
im running a mini t with a brushless cobalt b and tazer. and my car cogs at about 1/4th throttle does anyone
know any way to get it gonnne.
       Post #: 1

RE: cogging? - 7/14/2008 5:34:19 PM   
aebrock


 

Posts: 136
Joined: 2/4/2008
From: folsom, CA, USA
Status: offline 		what do u mean by coggs?

(in reply to Dragonfly2k3)
       Post #: 2

RE: cogging? - 7/14/2008 5:43:06 PM   
The_Shark



Posts: 1651
Joined: 6/16/2007
From: Plainfield, IL, USA
Status: offline 		it could be the radio/transmitter or bad interfierance.

i just took back a radio system for that problem on a nitro.

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       Post #: 3

RE: cogging? - 7/14/2008 6:09:50 PM   
Metallover



Posts: 822
Joined: 6/21/2007
From: Brandon, SD, USA
Status: offline 		Try a different radio or even new batteries in the same radio. You may also have a defective esc or motor. Some sensorless systems just have really bad cogging and you can't change it.

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(in reply to The_Shark)
       Post #: 4

RE: cogging? - 7/14/2008 7:08:32 PM   
rschoi_75



Posts: 1829
Joined: 2/1/2006
From: Los Angeles, CA, USA
Status: offline 		What battery are you using? What are your current esc settings. It could be a combination of the radio, bad quality batts, or settings. You will need to isolate the problem first before trying to fix it.

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       Post #: 5

RE: cogging? - 7/14/2008 8:57:02 PM   
t9dragon



Posts: 3241
Joined: 4/5/2004
From: Portland, OR, USA
Status: online 		Have you updated the firmware on the esc?

(in reply to rschoi_75)
       Post #: 6

RE: cogging? - 7/14/2008 9:09:32 PM   
HeliStyle


 

Posts: 528
Joined: 7/1/2008
From: orlando, FL, USA
Status: offline 		change your startup or startoff power settings on the esc, should fix the prob

(in reply to t9dragon)
       Post #: 7

RE: cogging? - 7/14/2008 10:52:48 PM   
peelin_out


 

Posts: 247
Joined: 5/26/2008
From: tiburon, CA, USA
Status: offline 		usually real cogging is because the battery can't keep the voltage high enough while throttling up... either the voltage drops below the voltage cut off point in the esc or the battery is just too weak to delivery power the motor needs at the time... that being said, check the esc settings for any obvious bad seettings.. start-up power on low is generally a good setting.. if you run 6cell nimh you proly don't even need a voltage cut off set.. I don't know much about the tazer esc, but I am sure others do. also try a different battery if you have access to some others.. just to see if yours is the problem..

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2x RC18R, RC18T (all hopped up)
2x MLST, Micro-T (stock)

(in reply to HeliStyle)
       Post #: 8

RE: cogging? - 7/15/2008 12:04:35 AM   
HeliStyle


 

Posts: 528
Joined: 7/1/2008
From: orlando, FL, USA
Status: offline 		try startup power at normal instead of low, sometimes starting at low, when starting out on throttle will go slow then fast, normal will prevent that

(in reply to peelin_out)
       Post #: 9

RE: cogging? - 7/15/2008 12:32:11 AM   
peelin_out


 

Posts: 247
Joined: 5/26/2008
From: tiburon, CA, USA
Status: offline 		I guess that would make sense if the esc is limiting the power too much.

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2x RC18R, RC18T (all hopped up)
2x MLST, Micro-T (stock)

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       Post #: 10

RE: cogging? - 7/15/2008 1:00:11 AM   
HeliStyle


 

Posts: 528
Joined: 7/1/2008
From: orlando, FL, USA
Status: offline 		that happens alot with the mamba escs

(in reply to peelin_out)
       Post #: 11

RE: cogging? - 7/15/2008 5:08:30 AM   
Dragonfly2k3


 

Posts: 92
Joined: 11/1/2004
From: , PA, USA
Status: offline 		the tazer has seriously limited settings, but i played with the throttle points during initial set-up and it seems to be working fine now. I also put in an 1800mah 2cell eflite battery.

(in reply to HeliStyle)
       Post #: 12

RE: cogging? - 7/15/2008 5:08:47 AM   
peelin_out


 

Posts: 247
Joined: 5/26/2008
From: tiburon, CA, USA
Status: offline 		not any more... cogging was an issue with the older firmwares.. but I have an old style mamba-25 with the 1.17 firmware and it works great...

edit: I am a firm believer in running a good strong battery to eliminate cogging..

< Message edited by peelin_out -- 7/15/2008 5:10:03 AM >

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2x RC18R, RC18T (all hopped up)
2x MLST, Micro-T (stock)

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       Post #: 13

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