smithhayward
Large Child
Hey All! I'm new to this board and the hobby, but I've been learning quickly. I built the thrust meter that Josh shows in one of their videos and while running a 2200kv A2212-6 brushless with a 9x6 prop it just cuts out after 30 seconds. I still have to see if it will run longer or until a batter is depleted at a lower throttle. The first (more expensive one with a nicer heat sink) 25A ESC went into "oh crap" mode and rebooted, the second 20A/30A SimonK ESC doesn't have any fail-safes so it just died (RIP) it also doesn't have a very good heat sink. I have 3 more of that ESC, but now I'm afraid to use them.
I went back and my more expensive ESC (25A) is still working. I ran it for a while through my watt meter and was getting the following data...
11% Throttle (when it starts) I get .62 A and 7.3W
15% = 1.6A and 19.9W
27% = 7.8A and 94W
I then bumped it up to 33% and it quickly shut down. ESC was CRAZY hot and it's as in the flow of air as possible, without building a platform behind the prop so the ESC is directly in the line of thrust; right now it's on a post in front of the blade (not blocked by the post, as in the incoming air as possible...
Should I try a smaller or slower prop? Anything else?
I went back and my more expensive ESC (25A) is still working. I ran it for a while through my watt meter and was getting the following data...
11% Throttle (when it starts) I get .62 A and 7.3W
15% = 1.6A and 19.9W
27% = 7.8A and 94W
I then bumped it up to 33% and it quickly shut down. ESC was CRAZY hot and it's as in the flow of air as possible, without building a platform behind the prop so the ESC is directly in the line of thrust; right now it's on a post in front of the blade (not blocked by the post, as in the incoming air as possible...
Should I try a smaller or slower prop? Anything else?