[NSRCA-discussion] Electric Data Logger

[AtwoodDon at aol.com]

I have been testing one of the new Jeti Spin 75 controllers and it records  
max rpm, max temp of controller, max amps, min voltage and a few other  things. 
 Works well, easy to use and doesn't weigh anymore than it's  predecessor, 
the Jeti 77.  It doesn't give you any ability to see  continuous values for the 
entire flight like the Eagle Tree, just minimums and  maximums and controller 
temps, flight times, etc.
 
Don
 
In a message dated 12/3/2006 11:28:51 A.M. Pacific Standard Time,  
joddino at socal.rr.com writes:

I've got quite a bit of in-flight data from the  full blown data logger with 
telemetry.  It is an excellent way of keeping  track of your batteries 
especially on a new plane.  I had a helper  watching the mAh used while I was flying 
so I wouldn't exceed 80% of the  capacity.  After a number of flights I found 
the consumption was very  consistent from flight to flight and I eventually 
could see I could  depend on time of flight to predict battery usage.  The peak 
current is  normally slightly lower than that during the run-up on the ground 
before  taking off.  The current graphs are very interesting.  I find I'm  
only over 40 amps for about 8 seconds at a time and then well below 40 for the  
next 10 to 30 seconds.  The average Watts during a flight is about 900 so  the 
motor and ESC stay quite cool. 
 
Jim O 
 
 
----- Original Message ----- 

From:  _Ed White_ (mailto:edvwhite at sbcglobal.net)  
To: _NSRCA Mailing List_ (mailto:nsrca-discussion at lists.nsrca.org)  
Sent: Sunday, December 03, 2006 10:22  AM
Subject: [NSRCA-discussion] Electric  Data Logger


Anybody tried this on their electrics?  

_http://www.eagletreesystems.com/MicroPower/micro.htm_ 
(http://www.eagletreesystems.com/MicroPower/micro.htm) 

Seems  like a good way to track how much of your batteries you are using in  
flight.  I'm also wodering about if there is a significant difference  between 
current measured on the ground and in the air.

Ed
 
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