| Quote: Originally Posted by grayuk | | | | |
| So if the failure temp is 167F/75C without any radiant heating or greenhouse effect the rx can take an ambient temp of 158F or 70C. | |
| | |
That is actually a high temperature tolerance. Majority of RC stuff can’t handle temperatures that high. JR doesn’t publish operating temperature range for its products but if you look at Hitec servos e.g.
http://www.hitecrcd.com/product_file.../HS-6975HB.pdf
Maximum temperature is
60deg C (140F)
And then there is the very popular but very reliable (better than JR gyro’s) Futaba GY401 gyro.
http://manuals.hobbico.com/fut/futm0807-manual.pdf
It has a mere 45deg C (113F) maximum temperature rating. The electronics are housed in a small black plastic case.
The gyro for the Raptor and Trex 600E is mounted on top at the back where it is exposed to full sunlight.
I have a few of those gyros and have on occasionally flown a heli fitted with one on a 38deg C (100F) day including a Raptor and Trex 600E. Mind you my heli's are under cover in the shade and then get flown 10 minutes then get placed back under shade.
On hot days like that though I tend to be in front of an air conditioner or out scuba diving rather than be doing RC.
People at the club generally tend to stop flying when it starts to get that hot and end up going home.
BTW the maximum operating temperature for Lipo batteries is 60deg C (140F).
The moral here is don’t just get fixated with the operating temperature range of the Rx but also consider the other electronics such as servos and voltage regulators and their maximum operating temperature rating and take appropriate action.
I mostly fly helicopters but still fly my planes on occasion. The temperature during summer can get as hot as 45deg C (113F) although usually it just goes to the high 30’s C.