Gearing = if the temps are all fine, then the gearing is fine basically. The motor shouldnt excede 180*f max, esc about 140-150, and batts... well, they're nimhs, so... dunno.
Ideal temps would be 120-140 on esc and motor- working them hard but not so hard that they are over heating.
Looks like there is enough room to mount the esc on the opposite side of the chassis to the rx- that will lower the CoG a touch, and place the esc in a more protected location should the rusty end up upside down. Industrial grade velcro works wonders for mounting, especially with a lightweight esc like that
