I'm puzzled

[joeling]

I had a little mishap with my buggy system a couple of weeks back. I let the smoke out of my MMM . My setup was :

1) MMM
2) Neu 1512 2650KV
3) Polyquest 4S 6000mah 25C Lipo
4) HN X1 CR
5) 13/48

So, did a little revamp thinking that it will be better :

1) MMM
2) Neu 1512 2000KV
3) Polyquest 4S 6000mah 25C Lipo (tried 5S 5000mah but uncontrollable)
4) HN X1 CR
5) 14/48

Well, after a 10 minute heat under the hot sun yesterday :

1) Esc temp. - 50+ deg C (low fifties)
2) Motor - 99 deg C !
3) Battery - 51 Deg C !

I was getting lower temps in the setup (especially the motor) I smoked. I'm kind of puzzled. I thought I can get better temperature using a suppposedly milder setup but apparently not.

I want lower temps for the battery & motor. What should I change ? I am thinking perhaps I should revert back to 13T. What do u think ?

My track :


Track right


Track left


Track center

The straight is in front of the drivers' stand & obscured.

Regards,
Joe Ling