Data Log from a typical 3D flight

[rza996]

Can anyone post a log of a 3D flight. I'm interested to see the data of the typical 3D flight, i.e. headspeed, PWM, timing, temp, amp draw. I'm new to all this logging data so I want to make some comparisons.

My setup is a Logo 700, 713mm blades, 19T pinion, Kosmik Cool 200HV, Pyro 850 compeition 500Kv, running 12S with 45C batteries. Anyone have a setup similar to mine that could share their 3D flight, I would appreciate also.

Thanks!

[rza996]

No one have a log they want to share?

[rza996]

This is from a mild 3D flight and some circuits. Are the drops and spike in headspeed typical of such a flight from my kind of setup? The the PWM and timing normal? Or Can I tune the kosmik more?

Any input is much appreciated. Thanks

[galensk]

Hi,
Do you run 2300 rpm ?
/Kurt

[rza996]

Yes, the headspeed right now is at 2300

[smsodhi]

Your PWM is maxed out at 100% What have you set your throttle at? It should not be above 80 and I suspect it is way over this. Your Timing is maxing out as you do not have any headroom and the GOV will not be able to maintain HS as it has no where to go and that is why your amps are spiking.


If you want to run at this RPM your gearing is off. You need to increase a tooth or two in your pinion and drop your throttle to 80.

[Jesse Kavros]

It is up to the user, but for what it's worth, 2300 rpm isn't really needed to get the performance out of this helicopter. I get the feeling that it is just burning up flight time. I myself fly at 2050 rpm and the helicopter can do anything I throw at it. 2100 would be about max that I feel would be needed, but to each his own, there may be reasoning behind it that I don't know. I just figured I'd offer some info with the testing I have done. It may also help with your issue of maxing out your throttle values at this gear ratio, if you lower the headspeed.

Hope this helps

Jesse

[OnTheSnap]

I think I saw this Logo flying at the Vegas FF at 2300 RPM?

Sounded scary as hell. ;-)

[rza996]

Looks like the issue is the motor. It's a kontronik pyro 850 compeition. This motor is so power hungry that I had to move up to 14s batteries. I got the throttle at 78% and the pwm looks like it's spiking normally, but the voltage dip on the batteries are still demanding. I've attached a log with a 14s flight. It's still drawing a lot of amps even at 14s and 78% throttle