New Jammin crt .5 motor question

[E-Revonut]

I'm running the Medusa 36-50-4800-5mm on 2s and love it. Gearing for mid-upper 30's it handles it without a problem. I use a 15t ( for some reason on other posts I beleive I may have been saying 19t but it's a 15) with stock tires and I have an 11t I use for running some bigger slash tires. I'm running MA 6000mah 2s packs and get 20-25 minutes of mostly full speed runs. After the first pack I do need to let it cool a little, motor is fine at 125* but esc gets a bit warmer, around 170* after a long hard run. I'm running a MM with no mods, no fan, and using the internal BEC.