View Full Version : Flight time with full charge...
12-24-2003, 10:39 AM
I have a JR 421 and I would like to how long I can fly or work with a full battery charge on the recever and the transmitter?
If it's not to much, How can I get a fast charge in the field?
I'm a newbie, so I ask!
12-24-2003, 03:48 PM
it really depends on what batteries you have now. What is the Mah rating? Are they Nicad or Nimh? The transmitter can last anywhere from 30 minutes up to a few hours depending in part on time of year (winter vs summer), battery specs and how you fly. The plane, as a rule of thumb is approx 4 flights with a 6-700Mah pack but again depends on type of servos, amount of control you fly with, how often you move the control surfaces etc etc.
I'm not trying to be difficult but there are many factors involved in flight times.
For a basic trainer, the flight pack (plane battery) is 3-4 flights before a charge is needed (this is summer times, winter time is less as batteries deplete quicker in the cold.)
To fast charge at the field you will need a fast charger (e.g .Hobbico Field Charger MK II), the proper leads and a 12 volt power source.
Hope this helps some, if not I'm sure someone else will pipe in :)
12-24-2003, 04:51 PM
I found that when I was learning to fly with my eagle 2 trainer and 600 MAh plane and transmitter packs that I could get 7 to 8 20 minute flights with no problem. mind you this was in the months of June and July when the temperature was warm. As Nuker said a lot depends on the type of servos etc. You should always carry a meter with you and check your aircraft batteries after 3 to 4 flights. That will give you a pretty good idea as to the draw on your batteries and how long you can fly
I have seen up to 10 demo flights on a Kadet LT-40 in the middle of summer and have been assured that you can pretty well fly for a couple of hours if all charged up.
As mentioned depends on pack mah, condition and operating temperatures.
Won't the transmitter warn you? Mine has come close but never has sounded the alarm at the field.
A good basic quick charger is the Hobbico Quick Field Charger MKII. The MKII is for nicads plus whereas the original is for nicads.
12-25-2003, 07:46 AM
You really help me on the life of a charge, I gone begin with the pack I get with my new JR 421 and when I get my wing I'm gone look for a fast field charger.
Best wishes for Christmas ans New year
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