View Full Version : Anyone want to compare Eagletree data?
03-07-2009, 11:24 PM
I've had my Eagletree for a couple weeks now and I'm loving it. I have the brushless RPM sensor and a temperature sensor. I'm interested to see how my setup compares to everyone elses. I don't want this to become a contest, but I'm interested to see how well the Zippy's compare to the more expensive packs.
First, here's my current setup:
CopterX/T-Rex 450S hybrid
Scorpion 2221-8 V2 Motor (12t pinion)
Scorpion 60A V2 ESC
GY401 + 9650
Zippy-H 2200mAh 20-30C 3S1P Lipo (http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=6330)
This first graph is from a new Zippy-H on it's third discharge.
And this one is from a pack that's about 9 months old. Still doing pretty good, but voltage drops a little more by the end of the pack.
03-08-2009, 05:35 PM
Surely someone else here has an Eagletree. Anyone have some data for the Flightmaxes, Rhinos, Outrages, etc?
03-08-2009, 05:54 PM
I don't use a flight logger, but I've flown enough packs to know what to expect for cycles and performance roll offs.
10-15 cycles before max performance. 50 cycles of phenominal power. Every cycle after that will be a downslide to the packs demise. 250 cycles and you did well. I've got some still hanging on after about 300 cycles.
The Kong 2600 packs for my 500 are dying some of the most abrupt performance roll offs of any pack I've seen. (3) of them have died similarly - they don't want to behave on the chrager at 1C (trigger over charge or under severe balance issues) and are good for maybe 2/3 of their expected flight time.
I just started some Zippy 3300's (for 500) and 5000's (for 600). I'm already starting to see some roll offs after about 40 flights. I'm hoping to get at least 200 decent cycles out of them. Time will tell.
I think it's pretty good training in the grand scheme of learning to fly electric heli's to know the stamina of your pack and fly (not only within your own ability) but within your pack's capability and pay more attention to collective management for your weaker packs.
03-09-2009, 10:43 PM
That's good to know about the lifespan of the packs. I'm keeping better track of my batteries now so I'll know exactly how it's doing over time. I've recorded every flight since I got the Eagletree, which is maybe 20 or so by now. I'm interested in how the peak amps and pack volts under load changes over time.
I'd really like some objective data to compare to. What feels good to someone might feel weak to someone else.
03-10-2009, 01:12 AM
It's kind of hard to compare unless someone has the same setup as you. But, there's a bunch of us that have Eagle Tree eLoggers that belong to the ETUG (http://www.helifreak.com/group.php?groupid=142) and more that have yet to join up. (I just started it a month ago.) Post you stuff there and see who can compare.