2200 Combo running hot !

[othello]

A buddy of mine was running his MBX5T with a Neu 2200kv, MGM 16018 and 6s2p A123 (around 5s lipo). His truggy must have been heavier than yours (Battery wheight around 900gr/almost 2lbs) and at the end he used a 13t pinion. During hot sommer days the ESC shut down due to thermaling and the motor reached up to 85°C/185°F. He used crimefighter tires also on rulux wheels.

Problem is the motor revs too high with 5s (around 40700rpm). A nitro motor revs between 30000-35000rpm. With a 14 pinion your gearing is 1:15,11 and without ballooning your top speed should be around 74km/h / 46mph. Way too fast for a truggy on a track and when pushed too hard temps will be high.

Your best bet is to decrease load on your motor and use smaller pinions. Cut holes in your body to increase airflow. I would start with a 12t pinion which should reduce speed somewhat above nitro truggy level.

[GREYGHOST]

I have an Mbx5 buggy converted with 36 60 medusa ,mmm same gearing and runs 40ish on 4s and is almost cold to touch after running for 10 mins.I have run the same 5s pack in that one too and it did get a little warm,but not that hot like the mmm combo did, different wheels and tires though,and of coarse,lighter.I need some more mod1 gears to try gearing up or down,kinda seems like it could be geared up with everythingelse being so cool and all,but I'll try both ways. I reset the timing to low and will give that a shot today and will try all that was suggested .If it continues to run hot,I might have to pull it and try a 70 or 80 can medusa,they seem to run very cool and strong.And yes the 2200 runs very well indeed,with the front end pulling up anytime you want to, real torque monster.I did do the diffs at 7k 10k 3k,not so sure this is right for a truggy with this kind of power,but turns and burns well enough,with the front unloading a little when you put full power to it.

[GREYGHOST]

Tried it with timeing set to low,and it cooled things down to 160.Next I'll try bigger pinion and smaller pinions,still lots of torque but slow top end,about 34mph.