The used zippy 8000 batterys were replaced by 2 new 4s SLS 10000mAh 25C packs. Thi resulted in a big jump in power output (from 5kW peak up to 7kW peak or 55A average to 90A).
For a short while i have used the castle blower but it was soon replaced by a custon cooling solution for the castle 2028 motor.
2 12v 80x80 fans wired in series and fed by the main batterys and a simple wind tunnel to optimise airflow somewhat.
This resulted in a way cooler motor.
To get an impression of the five-T i have uploaded a few videos:
Pushing the t-rex harder on a smaller grass field
A buddy of mine driving the car on the same grass field
More relaxed driving on my usual bash spot
To give you an idea of what kind of power is needed to drive a 16.6Kg (36.6lbs) like this.
When i'm pushing the car with lots of full throttle passes on grass like in the first video posted i'm getting th following read outs from the xl2 esc
- 91A (2.5kW) average
- 260A (7.1kW) peak
- 6500mAh used in 5 minutes (runtime would be around 7.5 minutes with a full charge
- ESC is already hitting 88.5°C (190°F) ... outside temp: 22°C (71°F)
- When pushing hard this setup is at it's limit
This is the read out of the third video posted
- 60A (1.7kW) average
- 206A (5,8kW) peak
- 5000mAh used in 5.5 minutes, Total runtime would be around 10-11 minutes.
- temps are all in check