Synergy Electric Helicopters > Synergy 516

First Flight Today! Tuning Help?

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M.Schmavs:
To start, I never thought taking my thumbs off the sticks on a maiden flight was a possibility. Sure, I could have just done it, but it only happened because I was immediately comfortable. The model was just holding there practically on it's own. First shot. Barely needed any correction as it left the ground. Wow.

Now, I digress, because that's probably what happens today with flybarless controllers. This is my first non-flybar experience so I don't know exactly where to give praise... The model, the controller, the settings? All of the above? Either way, I'm ecstatic about it.

With that said, pitch pumps were a bit laggy and "twitchy". Meaning, when descending and trying to pop back up, the model felt like it wanted to keep falling but with hesitation until finally catching and ascending. I'm trying to figure out if I should look at the governor or possibly the gyro settings for that. Forward flight acceleration and slowing showed no signs of lagginess.

Tail was rock solid no matter what I gave it.

Throttle curve is a flat 85% and cyclic gyro gain is 50%. Throttle was at 80% but I turned it up. Gyro was at 55% but I turned it down. Maybe I went the wrong way but cyclic does feel more connected at 50%.

This is also my first time trying to use a governor. I always set my flybared models up with linear throttle curves. I just didn't like the feel of governors ~12 years ago but I assume they are better performing these days.

I opted for a 1200KV motor with 16T main and 18T tail pinion. I want to keep my headspeed lower than what you pros are running while I relearn everything. This has me thinking I might want to increase the throttle percentage but I was under the impression to leave 15% headroom.

To sum it up, I guess I'm asking for generic tips on what to look at when the heli behaves certain ways during flight. Tuning Tips so-to-speak. Or maybe just link me to a useful site, haha. I've been searching with no luck.

If it matters, my ESC is a HW 120a Platinum and gyro is CGY760R.

Thanks in advance for any help!

Wolf51:
The 516 won't disappoint, its a great model.

About the pitch pump hesitation:
according to my headspead calculator with 1200kv motor, 16t pinion and 85% throttle you'll be around 2150 headspeed. The heli will perform fine at that, but higher headspeed would help to sharpen the response in that situation.

The hobbywing esc has an excellent governor, but your setup and battery charge at startup can make a difference. Can you tell us what governor settings you're using.

Cheers

Sent from my SM-G930F using Tapatalk

M.Schmavs:
I wouldn't mind more head speed if need be... Is it advisable to go above 85%?

I left the governor parameters at their default settings. Looking at the manual, Parameter P is set to 4 and Parameter I is set to 5. To be honest, based on the descriptions, I don't even know what those parameters do haha.

I did change the Governor type to Store mode.

Wolf51:
Governor store mode is best for consistent governor performance.
There is a basic procedure to do when you first set it up to optimise governor operation. If you haven't done that have a look at this video by Kyle Stacey
https://www.facebook.com/KyleStacyRC/videos/583050965441244/

As for increased headspeed, I'd suggest using the std 18t pinion which should give about 2400 rpm at 85% throttle setting with your motor.
You could increase your throttle to 90% with existing gearing but that will only get you 2200 but reducing the governor headroom at the same time.


Sent from my SM-G930F using Tapatalk

M.Schmavs:
Super Helpful Video! Thank you! I'm glad I watched that before wasting my time messing around with the parameters.

18T it is! Placing an order now. With that said, should I put the stock 20T tail gear back on when making that change?

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