e-maxx 3905 motor question

[Jason]

Hey guys im going to bought a 3905 e-maxx and I need to know I got some brushless motor in my hands but I cant use it all dont have proper gearing pinion for it ... so I got a :

feigao 8xl

neu 1515 2.5d 1700kv

neu 1509 2.5d 2700kv


I dont have any gearing on my hand for run the neu 1515 2.5d 1700kv how about running the neu 1509 2.5d 2700kv ? it is enought torque for push it without overheating @ 4s on mamba max esc with bec disabled ? here some config :

Differential Ratio: 2.8461538461538463
Transmission Ratio: 1.8333333333333335
Other Ratio: 1
Spur Tooth Count: 68
Pinion Tooth Count: 17
Total Voltage: 14.8
Motor KV: 2700
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0082
Spur/Pinion Ratio: 4 : 1
Total Ratio: 20.87179 : 1
Tire Circumference (inches): 17.28 inches (438.88 mm)
Total Motor Speed: 39960 RPM
Vehicle Speed: 31.33 mph (50.32 km/h)
Effective KV Value: 2700
KT constant: 0.5 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...



NEU1509F/S
1000 Watts Continuous
2000Watts - 30sec
Max rpm: 60,000
Stator Dia. 1.5"
Magnet/rotor length 0.9"
Shaft: 5mm
Shaft length: .75"
Weight, S 212g, F 225g
Dimensions 2.1"L x 1.56" dia.