FTX outlaw Brushless cogging

[Manuel Costa]

Hey guys!

 

I'm having a bit of an issue with my Outlaw - it is cogging when its on the ground I have checked the spur and pinion to see if they where meshing correctly and it seems to be I used the paper trick and it looks ok - While in the bench without any contact with the ground accelerates forward and back without any issue, when on the ground it makes a sound that it's slipping/cogging.

 

I've tried to read several topics around this but theres never any answer - I have a turnigy 2s Lipo 5000MH brand new this is running a turnigy Motor/ESC 3250KV, 80A, I tried a lot of options to no solution I have ordered a new spur gear and a pinion just in case. Spur Gear 62T and Pinion 17T these are the original ones that come with the brushless motor.

 

I've tested the motor on it's own and all the connections and theres no loss in continuity and it works fine - I'm a bit lost here on what to potentially do next to have the car fine.

 

Thanks in advance guys!

[ovrkll]

If the electronics are not Sensored it will always cog...

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[Alex97]

What's been said above, sadly at a low speed they will always cog. Not ideal however when bashing it shouldn't be an issue.

[Manuel Costa]

2 hours ago, ovrkll said:

If the electronics are not Sensored it will always cog...

Sent from my SM-G950F using Tapatalk
 

 

thank you for getting back to me! Sorry im quite new to the hobby can you tell me how can I see if the Electronics are sensored? 

[Manuel Costa]

1 hour ago, Alex97 said:

What's been said above, sadly at a low speed they will always cog. Not ideal however when bashing it shouldn't be an issue.

Hey! From what I saw from product reviews out of the box this is something that does not happens - Granted I did bought the car second hand with some updated parts that includes.

 

Motor 3250KV ESC 80A Turnigy

CVD shaft

and other bits and bobs.

 

I've attached a little video of what I was talking about - I can't seem to understand how to overcome - Any suggestions are welcome.

 

Thanks!

 

[ovrkll]

 
thank you for getting back to me! Sorry im quite new to the hobby can you tell me how can I see if the Electronics are sensored? 

Most brushless systems have 3 wires powering the motor. A sensored system has an extra cable from the ESC to a port on the end of the motor informing the esc the exact position of the poles. This allows for precise inputs to allow smooth low speed control.

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[Manuel Costa]

I see, this one is not sensored but I have a programming card that allows me to fiddle with the motor timing - I need to research more about that as I don't know much details about that and online theres not much info about this product - Thank you for your help!

[ovrkll]

Glad to help.
For timing my suggestion is to set it at zero.
If you have starting force parameter, set it at low along with a high punch control.
This in theory should give you the smoothest start up but at sacrifice of pure power and acceleration.

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[Manuel Costa]

Thank you for the suggestions, I did mess around with the programmer to see if I could have a better solution - But today I had the time to strip down both diffs and realize that they are not in the best of shapes so I have 2 Diff spurs coming my way - Plus I discovered that the last owner did not stated that he tried to lock the rear diff with some interesting gue that was making the inner gears not be aligned, but there were actually in good condition.

 

After 2h of cleaning all that **** and putting a good amount of grease they sound better but I will give it another go once the new bits arrive - a few more days it will be ready for a proper bashing session!!