Quick recovery during pitch pump

Steve Evans · 06-18-2012, 04:26 PM

I decided to emulate a rocket this evening, but 3.5 seconds of fully pitch was as much as my courage would allow. Interesting how the YGE recovered the head speed during the climb.

The head-speed dropped from it's average 2707 RPM, dipping to 2539 RPM but then rapidly recovering to 2640 RPM, slowly increasing for the remainder of the climb. It then overshot to 2770 RPM before settling back.

I've not given the ESC quite such a burst of power before and it was good to see how it handled it.

Steve

urgno · 06-19-2012, 12:03 PM

how high had gone the heli after 3.5 sec ?

Steve Evans · 06-19-2012, 03:20 PM

Quote:

Originally Posted by urgno

how high had gone the heli after 3.5 sec ?

Hah, you may joke, but as I had a camera on board I can say that the view looked exactly like this...

Steve

urgno · 06-20-2012, 12:23 AM

holy cr**

kimmik · 06-23-2012, 07:09 PM

What an idyllic landscape! Do you have a current log? It would have a peak followed by plateau then a short ring at the end. would be interesting to see its shape, and to see how much lower a precomp gov would lower the peak.

Btw are you still using shallow v curve for the gov?

I'm doing it now and seems to work really well. 72-71-70-71-72

Steve Evans · 06-26-2012, 05:14 PM

Sorry, no current monitoring! I've not played around with a V much more. I tried using the CGY750 gov with minimum gain controlling the YGE in gov store mode, and even though there wasn't much correction going on, the tail suffered.

If and when Futaba release new CGY750 firmware I'll give it's gov another try but for now I'm just enjoying flying!

Steve

06-18-2012, 04:26 PM	#1
Steve Evans Registered Users Join Date: May 2007 Location: Leighton Buzzard UK	Quick recovery during pitch pump I decided to emulate a rocket this evening, but 3.5 seconds of fully pitch was as much as my courage would allow. Interesting how the YGE recovered the head speed during the climb. The head-speed dropped from it's average 2707 RPM, dipping to 2539 RPM but then rapidly recovering to 2640 RPM, slowly increasing for the remainder of the climb. It then overshot to 2770 RPM before settling back. I've not given the ESC quite such a burst of power before and it was good to see how it handled it. Steve Attached Thumbnails __________________ Trex 450SEv2/HS65-MGs cyclic/Spartan Quark/DS520 tail Trex 450ProV2 DFC/CGY750 FBL/DS410s cyclic/DS520 tail Trex 500ESP DFC/CGY750 FBL/YGE-120LV ESC/DS510s cyclic/DS650 tail Futaba 8FG 2.4GHz

06-19-2012, 12:03 PM	#2
urgno Registered Users My HF Map location Join Date: Jun 2007 Location: near Venice - Italy	how high had gone the heli after 3.5 sec ? __________________ my Prôtos twins & Acrobat Shark ............... To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

06-20-2012, 12:23 AM	#4
urgno Registered Users My HF Map location Join Date: Jun 2007 Location: near Venice - Italy	holy cr** __________________ my Prôtos twins & Acrobat Shark ............... To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

06-26-2012, 05:14 PM	#6
Steve Evans Registered Users Thread Starter Join Date: May 2007 Location: Leighton Buzzard UK	Sorry, no current monitoring! I've not played around with a V much more. I tried using the CGY750 gov with minimum gain controlling the YGE in gov store mode, and even though there wasn't much correction going on, the tail suffered. If and when Futaba release new CGY750 firmware I'll give it's gov another try but for now I'm just enjoying flying! Steve __________________ Trex 450SEv2/HS65-MGs cyclic/Spartan Quark/DS520 tail Trex 450ProV2 DFC/CGY750 FBL/DS410s cyclic/DS520 tail Trex 500ESP DFC/CGY750 FBL/YGE-120LV ESC/DS510s cyclic/DS650 tail Futaba 8FG 2.4GHz

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06-23-2012, 07:09 PM	#5
kimmik Registered Users My HF Map location Join Date: Sep 2011 Location: Australia	What an idyllic landscape! Do you have a current log? It would have a peak followed by plateau then a short ring at the end. would be interesting to see its shape, and to see how much lower a precomp gov would lower the peak. Btw are you still using shallow v curve for the gov? I'm doing it now and seems to work really well. 72-71-70-71-72