Techniques > Radios
Which Servo
Happy Days:
Unfortunately your Tx uses 9.6v (not 12v) and your Tx battery has to be charged in a certain way Cha so,....as you put it, there needs to be some electronic gizzmos. (Can't simply connect straight from your car battery :( )
There are may "field chargers" (chargers that run on 12v input) on the market.
SMC have one just for charging 9.6v NiMH batteries for a 12v source for £5.99 plus shipping. ( www.sussex-model-centre.co.uk click on r/c equipment, click on chargers. First one on the list is ACE Quick Charger £5.99 ) :)
I suggest this is likley to be your cheapest option Cha,.............IF you're sure you are gonna be flying for more than 3 hours at a time. :?:
That's a lot of flying! :clap:
K.
Happy Days:
Sorry Cha, the first line of my previous post should have read
Your Tx battery runs at 9.6v (not 12V).....ect :oops:
haydenc:
Hi Keith
Field chargers they are called.
Thanks for that.
So I am on the right road now.
Will have to get one of them.
Had a look at the Sussex Models site but the Ace Quick Charger is out of stock.
The CG 335 Pro seems to be able to charge TX and RX batteries at the same time ?
That looks a better option.
I know 3 hours is a lot of flying but I often set out on a spur of the moment, so the transmitter is not always fully charged.
So I start off from a weak position.
A FIELD CHARGER (now that I know about them) is what I need.
Though, it would be great to have a Lipo setup and, like Fred, not worry about discharged batteries.
. :oops:
Last Tuesday evening, spur of the moment, I flew my Stargazer. Started off with RX battery indicator showing down 2 dots on a 10 dot system.
No problem I thought as it is an 1100mAh battery.
50mins later the glider literally went mad. Developed a mind of its own. Piled into a heap of stones on the beach and cracked off its tail section.
Up till then I was a really happy chap.
I now know that I should check the battery condition under load.
Repairs now completed. waiting for wind to abate.
Thanks again for the help
Cha
Alan_Perse:
You can buy a charger that will work with a 12V battery and off the 240V mains. I have one. I's made by Graupner and it's called the Ultramat 14. It will charge NiCd and NiMh cells as well as Li-Io and Li-Po cells. But you need to buy a balancer to charge the Li-Io and Li-Po cell (but I think the latest version has the balancer built in). There are also more advanced versions such as the Ultramat 16 and the Ultramat 17 but they are much more expensive.
Happy Days:
You're very welcome Cha.
Sorry to hear about your little mishap last Tuesday :( ;
Tip: (If you don't already know it) When you use one of those 10 dot battery testers.........wiggle the control sticks to make the servos work while the tester is connected. The number of dots that light up will go down and you will get a better idea of what the actuall working voltage of the battery is.
Rule of thumb; If the number of dots that light up when the servos are working is half the total number, (or less)....DON'T FLY!
Unfortunately you've already found this out the hard way :wink:
Hope you're a Happy Chappie again now :lol:
Good luck Cha.
K.
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