Robot having internal heat problem

[Gene]

Originally Posted by KenWittlief

OK then, bullet holes would work too :^)

BTW, what is it thats producing the heat? the motors or the electronics?

most small hobbie motors have built in blowers. If they dont get fresh air for cooling it defeats the purpose.

If its the electronics, are you sure you really have a problem? If it runs for 2 hours its pretty much heat-soaked to steady state. If its still running at that temp it might be ok.

Most electronics will operate at 95°C without failing (too hot to touch).

Good question Ken. The motors venting heat into the container; the radiant energy coming off the “desert” floor (which can go up to 120 F.) and the direct sunlight. Remember, this is the place where you can’t go barefooted in the summer because you’ll burn the bottom of your feet (second degree burns!!). Moral of the story - If you live in the southwest – live near the ocean or in the mountains.

Anyway, if he insulates his ammo-bot, he protects it from the direct sunlight. If he draws in outside air, he pulls in the hot air radiating off the ground. If he insulates the entire unit, he protects it from the radiant energy – but bringing in outside air is a no-no because the outside air is merely heats the electronics.

He also asked how they’re keep the electronics cool in Iraq. Needless to say, he didn’t like the answer. But I assured him, I had found a great web-site used by some of the brightest minds in the world and since I was at a loss (short of redesigning the ammo-bot) . . . . the forum is his last and only hope.

You see how much faith I have in you guys!!