DX7 Lipo Conversion Programming
Plugs right in, no problem. Diode drops the voltage, though most are not doing it. You will not regret the $20.
You can reprogram so your lipo does not go too low, easy:
Ensure the Aileron D/R switch is in the UP position.
Press and hold the DOWN and SELECT buttons and turn on radio. Now you're in the setup menu.
Scroll up/down until you get to the screen that says [Model Reset]
Press the Adjust Descrease button (r/h side of LCD)
Flip the Aileron D/R switch down
Press the Adjust Increase button
Flip the Aileron D/R switch up
Press the Adjust Descrease button
Keep alternating this Aileron D/R up/down and Adjust Increase/Decrease sequence (about 5 cycles)
The radio will 'beep' and the LCD will go dark. This is the LCD test.
Scroll Up/Down (left side of LCD screen) through the Service Menu
Go to alarm menu, set alarm to 9.5V,and voltage to 11.5, ( if you have a fully charged 12.6 3S in there).
Scroll to "all settings ok?" push clear.
Now updated.
mlucia wrote ...
Thanks for the info. Mark B. So, do the tx lipos simply plug into the DX7 or do you have to attach a special plug? I guess that is where I am unclear. Also, are you running a diode inline or no? I have read people are not and it has been 2 years without issues? Appears the slight over voltage does not cause issues?
Did you recalibrate the power meter as I have read?
Seems as if people want to place an order for some? I wont be able to order until after IRCHA (Saving my pennies) which is August 10-14th. Someone else may want to take on that.
In the Process of creating a more permanent page for this topic I have created a youTube Video of the process.
http://www.youtube.com/user/GreenMountainRC#p/a/u/0/mIqSn2QVKsk
Later I will make a formal page with Pictures and this video.
I might have asked this on the old site, but will this same set up procedure work on the 6i as well?
The DX6i runs off a much lower voltage, somewhere around 6 volts? i think? this would put you in the 2S battery range, there isn't a whole lot of info out there on converting a DX6i, it seems like a few people have done it, but it sounds like it is a lot more involved where you would have to put Diode's, new voltage regulators, etc. Definitely not a "plug-n-play" situation like the DX7.
Also in my search on this topic, I found that while the DX7's voltage regulator can handle the 3S the heatsink for it is supposedly undersized. Some people opt'd for installing new voltage regulators in the DX7's to fix this.
Great! Thanks Matt...
Can you add at the top of the post the links here for the actual lipo for the TX? Here is the original.
http://hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6955&Product_Name=ZIPPY_Flightmax_2500mAh_Transmitter_Pack_(Futaba/JR)
or this one:
http://hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=7346&Prod...
You can install a diode from radio shack to drop the voltage your TX sees, most folks don't do it.
Cautions, tape the plug on the side of your TX so you don't use it to charge, and now use 10.5V as the low voltage to charge your lipo.
Mine lasts a long, long, long time.......................
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