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-   -   Cogging issue with set up (https://www.rctech.net/forum/radio-electronics/516823-cogging-issue-set-up.html)

jnelson214 05-24-2011 08:28 PM

Cogging issue with set up
 
Well I have changed out the motor and still same cogging issue.. I can help the cogging by turning down my expo and slowly hitting the throttle.. if I go from nuetral to full throttle it just puts/hesitates...

MMP (Mamba max pro) 1.26 version, dual mode on
spektrum reciever Micro
Hitec 965 servo
Tekin redline 8.5
Novak 5.5 (2nd motor same issue)
3 seperate sensor wires
6000mah saddle pack 25c (if it matters)
with OR without novak glitch buster same issue.

any one????? THANK YOU!!

burnineyes 05-24-2011 08:40 PM


Originally Posted by jnelson214 (Post 9161236)
Well I have changed out the motor and still same cogging issue.. I can help the cogging by turning down my expo and slowly hitting the throttle.. if I go from nuetral to full throttle it just puts/hesitates...

MMP (Mamba max pro) 1.26 version, dual mode on
spektrum reciever Micro
Hitec 965 servo
Tekin redline 8.5
Novak 5.5 (2nd motor same issue)
3 seperate sensor wires
6000mah saddle pack 25c (if it matters)
with OR without novak glitch buster same issue.

any one????? THANK YOU!!

In my experience, a full throttle cogging like that is almost always caused by a weak battery or poor connections somewhere between the battery and motor. The fact that it starts better when you give it throttle slowly tells me the problem happens when current draw is high. 6000mah 25C should be enough to power either of those motors assuming it is in decent condition, so I would look to connections first. What kind of battery and motor connectors? Have you replaced any of them? Sorry if this has been covered, it sounds like you have posted something about this before but I am not familiar with it. Is this a problem that started all-of-a-sudden or did it start with all new components?

jnelson214 05-24-2011 09:23 PM


Originally Posted by burnineyes (Post 9161304)
In my experience, a full throttle cogging like that is almost always caused by a weak battery or poor connections somewhere between the battery and motor. The fact that it starts better when you give it throttle slowly tells me the problem happens when current draw is high. 6000mah 25C should be enough to power either of those motors assuming it is in decent condition, so I would look to connections first. What kind of battery and motor connectors? Have you replaced any of them? Sorry if this has been covered, it sounds like you have posted something about this before but I am not familiar with it. Is this a problem that started all-of-a-sudden or did it start with all new components?

I have had some other issues with this set up but the cogging issue is new with the battery and buggy. I am using bullet connectors with both motors and its a gen's battery that is brand new. I thought the battery as well... I might buy a new one and see or try someone elses.. the connections on motors were both same in other vehicles and worked fine. esc is new.
thanks

Duster_360 05-25-2011 08:57 AM

Just a suggestion, but you might try rolling back the esc firmware to an earlier version ans see if that helps.

I read about a similar prob that was solved by rolling back to 1.21....

TOM MAR 05-25-2011 11:35 AM

In your settings, did you try high power starts ?

jnelson214 05-25-2011 07:32 PM


Originally Posted by burnineyes (Post 9161304)
In my experience, a full throttle cogging like that is almost always caused by a weak battery or poor connections somewhere between the battery and motor. The fact that it starts better when you give it throttle slowly tells me the problem happens when current draw is high. 6000mah 25C should be enough to power either of those motors assuming it is in decent condition, so I would look to connections first. What kind of battery and motor connectors? Have you replaced any of them? Sorry if this has been covered, it sounds like you have posted something about this before but I am not familiar with it. Is this a problem that started all-of-a-sudden or did it start with all new components?

You were 100% correct... I used a stick pack just for the hell of it and it was fine.. charged the saddle pack and it was fine.. it was at 3.9v per cell which you would think was fine but it wasnt... checked the mmp settings and it was auto lipo cut off which is 3.0v default... not sure but THANKS EVERYONE for the help...


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