[lurkingknight]

lipos are affected by cold... just not as drastically as nimhs.

vfcs have those ridiculous self shimming gears which are between too loose, too tight and just right depending on how you hold the gun. The only gear that's shimmed on both sides is the bevel gear.

Keep in mind this is airsoft... which means consistency even from the greatest manufacturers can be suspect. The motors they put in can be anything... whether it be different models, different production runs of the same model, different factories, different guy who wound the armature in the motor to how the magnets are aligned and balanced in the motor... the determining factor of what you get is more than likely based solely on price that the manufacturer bought that shipment of motors.

If you want to see how much resistance the vfc's scar wiring posts are adding, rig up a test rig and battery to the wire stubbs when you take the rear of the gun off to expose the shortened wiring harness at the rear of the gearbox and fire the gun. I guarantee you that you'll probably see at least 3-4 rps gain right away.