Building some oil/liquid a no. I just can justify it to myself There is a lot of work.
But there is one thought that I can cool down pushed in air. I could make some 1 liter pocket out of aluminium outside of the motor, where this thin 1mm aluminium is. And then just put dry ice inside at the start, that ice will make the whole side of that aluminium extra cold and in therory colder air should enter the motor. But in reality air is a very bad heat exchanger so this could only bring some 5 degrees down if that much. But that is one thing that is easy to do.
But the second problem is distance. If only 7-9 laps then I can drive with 60% and motor is 130 degrees at end.
But when more than 12 laps, I also have battery capacity problem, because I use like ~2,2Ah per lap, so 10 laps is 22Ah (add here warmup laps 2 of them 2,2Ah also) and it's already 24,2Ah. And 30Ah is max from LiPo if I want that this lipo will last also.
So this will make 12 laps max (24,2 + 2x2,2 = 28,4Ah) and cooldown lap ~1Ah will make ~30Ah.
We raced 14 laps in wet and used 33Ah and that was already hurting that LiPo
But there is one thought that I can cool down pushed in air. I could make some 1 liter pocket out of aluminium outside of the motor, where this thin 1mm aluminium is. And then just put dry ice inside at the start, that ice will make the whole side of that aluminium extra cold and in therory colder air should enter the motor. But in reality air is a very bad heat exchanger so this could only bring some 5 degrees down if that much. But that is one thing that is easy to do.
But the second problem is distance. If only 7-9 laps then I can drive with 60% and motor is 130 degrees at end.
But when more than 12 laps, I also have battery capacity problem, because I use like ~2,2Ah per lap, so 10 laps is 22Ah (add here warmup laps 2 of them 2,2Ah also) and it's already 24,2Ah. And 30Ah is max from LiPo if I want that this lipo will last also.
So this will make 12 laps max (24,2 + 2x2,2 = 28,4Ah) and cooldown lap ~1Ah will make ~30Ah.
We raced 14 laps in wet and used 33Ah and that was already hurting that LiPo