Hyper 7 1/8 Scale cogging Issues
 

Was up everyone,
I am wondering if someone can shine some light on my situation. Just completed my first Ofna hyper 7 nitro to electric. My current set up is listed below:

MOTOR
Turnigy brushless 2100KV motor.
Motor Specs:
Turns: 2.0D
Poles: 4
RPM/v: 2100
Voltage: 3~5s Lipoly
Continuous Current: 80A
Peak Current: 140A
Resistance: 4.7mΩ
No Load Current: 3.7A
Dimension: 43 x 63.4mm
Shaft Length: 20mm
Shaft Diameter: 5mm
Weight: 308g

ESC:
Turnigy 150A.
ESC SPECS: Specs:
Constant/Burst Current: 150A / 950A
Motor Compatibility: Brushless sensored and sensorless
Car Compatibility: 1/8 on road, off road and 1/8 crawlers
Motor Limits:
2~4S LiPo: KV<3000, 2~6 poles
2~6S LiPo: KV<2400, 2~4 poles
Resistance: 0.0002ohm
Battery Cell Count: 6~18S NiMH or 2~6S LiPo
BEC Output: 6V @ 5A
Dimensions: 58x41x38mm
Weight: 95g (without wires)

Battery:
Turnigy 4s 6600mah lipo battery.
Battery Specs :

Capacity(mAh) 6600
Config (s) 4
Discharge (c) 60
Weight (g) 818
Max Charge Rate (C) 2
Length-A(mm) 164
Height-B(mm) 51
Width-C(mm) 52



Current Gearing:
Spur gear - ( I think it’s a 51 metal tooth not sure at this time)
Pinion gear – (15 tooth)

Pictures
See my album.

My Issue:
Currently I am experiencing some coging issues with this setup from a stand still. Sometimes It will run for a little while but then stop. I've experience the motor, motor wires and bullet connectors get hot at times and I wondering if I have the correct motor for this ESC?
As it stands right now the buggy has some weight to it, so I don’t know if that maybe a factor .
I have read TONS!! of related issues and so far doing the process of elimination it boils down to either gearing or motor timing. The radio that I’m currently using is the (Flysky gt3b). I did some research also on battery amps but still a little green so I am still learning how the brushless amperage works.
Anyway if anyone out there that is willing to help me out
Please any advise will be much appreciated .

If its a Hyper7 it should be a 46 spur I believe ? Is it plug and play or self soldered contacts ? Are you running a non sensored motor in sensored mode ?

Is it a sensored setup? If it is verify you connect the A-B-C wires from the ESC to the motor are right, if something is crossed over it will cause issues. Also unplug the sensor wire and seat it back down, if there is any hint of damage on it replace it. Still having issues just replace that and see what it does for you they are cheap and they do fail often.

As for the heat, that can be the A-B-C wire issue being out of sorts, but I would make sure the bullet connectors are nice and snug, if they have any slip or spin to them will get an arc and that will cause heat in the connector.

beyond that it does help to get another set of eyes on things. After you hit 10 post you can link in pictures or videos. But if you have a local hobby shop or track that may be good option for those extra eyes.

He does have pics. in his album. And motor leads appear to be connected properly . not shure on ESC . I dont know HW leads . Im guessing ESC settings ...sensored-un sensored

Hi bob,
thanks for the hep. To answer your question it's soldered connections . I did them my slef , but after looking at my soldered connection that could be it. It's a sensored motor and ESC. the ESC has A, B ,C connections for the motor.

Also FYI.....cold solder joints cause elecrical resistance.......creating heat . :tire:

Cogging update
 

Bob, GREAT news .. it was my bullet connector from my motor was loose . Man that is so crazy how that can cause so much issues. Anyways , I am cooking on gas now . Thanks again Sir.:nod:

Cogging update
 

Ben you are awesome,
it was my "B" bullet connector from my motor was loose . the heat shrink was holding it in place . ahh!! relieve at last . My brushless build is final . Thank you again I will post some picks when i get my body for it:nod:

Your welcome.......Anytime. :tire::tire::tire: