DX7 with 1500 3s1p FP Li-Po

[WillJames]

By Request, a photo of the 1500 EVO 3s1p pack in my DX7. I an fly a LONG time with this setup between charges.

[mx400]

Wow I bet you can get allot of flight time off of that lipo.

[WillJames]

Not sure how long, but long. Steve Rogers who works at FlightPower USA installed it for me and I am really happy with the setup. I remove it from the radio to charge/balance it. Pretty snug fit, but does fit.

[Gino CP]

Wow, I cannot bring myself to carve my name on the tx like you did he he. Just today, I dinged the case bad and it just killed me. I sure hope horizon has replacement casings.

[WillJames]

I did that with an Xacto to identify my radio at the Youth Masters event I vounteered to work with Bob Sadler on. It is an event where young kids come to the Joe Nall site and fly 40% airplanes to learn for a day then compete with the planes for 2 days. It is a hoot and really fun event to attend. Anyway, they needed an extra DX so I lent them mine. That was when I worked for FP and we took down a bunch of RX packs to run a couple of the big planes. Loads of fun, highly recommended. I'll always have the DX7, it will be my son's first radio. ;) He will be 7 in Nov. :thumbup:

[chadjay]

Hey Will,

How many hours....or should I say days...do you get with the 1500mah lipo? I just finished putting a 2100mah TP 3S in my DX6. I also installed the better voltage regulator from dimension engineering. I was just curious about the life of you lipo.

[WillJames]

I get a lot of flights, never pushed the limits....

[Rodney]

with the 2000mah ION mine runs over 15 hours easy.
And no pushing ot get it in. HEHEHE

[big-al]

from the jr 9303 manual, intro page G-26

"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 2.4 system will operate for over 15 hours
using a 2700mAh Ni-MH battery."

this is the first I've seen or heard that their transmitters don't like the higher voltages of a 3 cell li battery.

[ChasHeliCop]

They thought enough about it to include it in the manual ? Hmmmm, maybe I should rethink this. I know there are alot of people flying with LiPo's, has anyone experienced any system failures. I just came across a source for the White JR connectors JST EHR 2, for the radio, so you don't have to cut your stock lead off the pack. RADICALRC.com $2.00 each, just got mine in today.

http://www.radicalrc.com/shop/index.php?cat=100&shop=1&

http://radicalrc.secure-mall.com/shop/images/100494.jpg

[Rodney]

Wow sombody has a new name for the connector. Check with other sorces I get them for .99. But it must cost another dollar to repack it.

[sschulze]

where can I get one of these 1500 EVO 3s1p packs? I guess this is the consensus for best lipo for the DX7?

EDIT:
just saw this on flightpower's website:
http://www.flightpower.co.uk/Products/splitter.asp?currency=USD&cat=Evo_TX&aspAdv=true&searchWord=evotx

$55.99 for the EVO-TX 1500 3S

says it is a plug and play replacement that comes with the right connector, is this a good deal or is it cheaper somewhere else and better to just do the connection yourself?

[ChasHeliCop]

Man, that wasn't there the other day when I looked, I just ran across it too. So much for posting my mod.

I ran 6 packs today, and voltage only dropped 0.2 volts---I left the Tx on most of the time. 6 minute flights plus before and after spool down........ so I would say a good hour on steadily and it only dropped 0.2 volts with the FP 3s1p 1500 lipo :noteworthy

[sschulze]

I just got an e-mail back from ReadyHeli (3 min after I sent my question!!) that said they're going to get the FP 1500 EVO-TX batteries in stock sometime this week

just letting everyone know!

[ChasHeliCop]

Ready Heli just got in the Jr/ Spektrum FP Tx packs

http://www.readyheli.com/FlightPower_EVOTX_1500_mAh_3S1P_11_1v_Spektrum_TX_ p/evotx-15003s-spektrum.htm