Espritmodel.com Telemetry Radio
Gadget01's blog
Posted by Gadget01 | Jan 16, 2011 @ 06:59 PM | 2,178 Views
I'm deployed to Iraq for a few months flying on a C-130 doing communication relay duty for convoys, so I'm on a bit of a hiatus from the hobby. I brought along my Blade mSR to keep from getting totally rusty.
Posted by Gadget01 | May 30, 2010 @ 06:20 PM | 2,838 Views
A friend of mine was telling me how cool it is having a 3s lipo to power his Spektrum DX7 since the pack would run for a month and beyond and leaving it on overnight without having to recharge. I was very tempted to do the same. Then I remember seeing this on page G-26 of the x9303 manual:

"5. Q: Can I use a 3-cell Li-Po pack in my transmitter?

A: No. All current JR and Spektrum transmitters are designed to operate using a 9.6-volt transmitter pack. A fully charged 3-cell Li-Po pack puts out 12.6 volts. This higher voltage can overload the power-regulating transistor causing damage and or failure, possibly in flight. Many of our customers have experienced failures using 3-cell Li-Po packs and their use in JR and Spektrum transmitters is highly advised against."

The x9303 isn't exactly free, and I would rather tolerate the inconvenience of the stock battery vs void my warranty. I wasn't exactly having any problems with the oem nimh pack other than it made the it necessary to run a nimh capable charger or use the included wall wart charger overnight- bleh.

So a couple of my friends and I are doing a shelf-check at the LHS and noticed this A123 Tx pack from Eagle Racing. I figured I'd give it a try at about the cool price of $50. I soldered a mini-deans connector on it, and did a balance charge. When I first powered on the Tx, voltage was reported at 10.1v. After flying all afternoon yesterday, 10.0v.

I think I like it