[cjohndavies]

Finally got my own ‘tricopter in the snow’ photo :3

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[cjohndavies]

Thanks for all the input, finally had a chance to do some more investigating.

I clamped the ‘copter down to the bench so that I could test the tail motor with the propeller attached. It behaved fine as I punched the throttle up & down a lot more aggressively than I ever would when actually flying, so I think I’ll try flying it on 4S again next time I go out.

What I did notice though, is that all 3 of the motors emit a high pitched squeal when they reach about 1800 throttle input on 4S (calibrated 1000 to 2000). I’ve read that this can be due to ESC timing, so I tried all 5 options in BLHeliSuite under ‘Motor Timing’ but they all still made the squeal. Is this just normal for these motors? Should I try to oil the bearings?

[cjohndavies]

And all wired up 🙂

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[cjohndavies]

Spent ages last night trying to work out a neat way of attaching a HS1177 to my v4 build & looked through this thread for inspiration, so I figured I would post some pictures of my solution in case anybody else comes looking! Haven’t had a chance to test it yet to see if vibration is an issue, because it’s raining all weekend here 🙁 I don’t have a 3D printer so I just rolled out a sheet of thermoplastic. I want to be able to fly the tricopter via fpv even when I don’t have my GoPro or Yi attached, hence why I’m not just using them as the fpv camera.

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[cjohndavies]

Thanks for the response David. My solder joints look fine, not my best work because there isn’t much space to work with on the F3FC, but all shiny & with good continuity according to the multimeter.

If it is an ESC sync issue, should I be able to recreate the issue on the workbench if I take the props off & repeatedly punch the throttle? Or might it only happen if there is actually resistance on the motor from a prop? I’ve tried this & couldn’t get it to stutter at all.

No resistance on turning the back motor, even after it’s little crash!

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