Mamba 6900 on ZX-5

[jefierro]

Greetings all.

Having a little problem with my new Kyosho Lazer ZX-5 SP version. in one word ... HOT!
how hot? ... is melting the body and gluing the heat shrink from the motor connectors together.

The setup:
This is a 1/10 scale 4wd buggy weights aprox 1650g.
MaxAmps 5000mAh 2s lipo on traxxas connectors.
Mamba Max 6900:

• Forward to Brake To Reverse
• Brake Amount "40%"
• Reverse Throttle "50%"
• Punch Control "80%"
• Drag Brake "disabled"
• Start Power "Low"
• Motor Timing "Low(5)"

Differential ratio 2.63.
Temps:

78/15 (Lowest pinion that can mesh)
Motor:186°F
ESC:172°F
Batts: 112°F

78/18
Motor: 189°F
ESC: 196°F
Batts: 117°F

Ambient temperature is hot 86 to 90°F
i'm not driving like a mad man, but several asphalt speed runs, off-road bashing and small jumps, nothing out of the ordinary . after 20 min in one run i had a termal shutdown ESC was ~200°F
I guess the drive line is free, as i cant find any binding, but this is my first kit build i could have done something wrong but most unlikely, feels pretty smooth.
Heck not even my HV4.5 on 4s lipos is this hot, run the same day, same torture 145°F on the esc and motor.
I'm new to the MM so I have played with some settings but other than cooler batteries I haven't fixed this problem.
I want to shorten and eliminate the motor connectors and direct solder the wires this my alleviate some resistance there, but i want to consult this before i go further.
today i've made some air vents in the body but temps still to high.

HELP PLEASE!