N Spektrum 9 channel RX designed just for Giant Scale

[gareth.ky]

	Quote: Originally Posted by bodywerks
	Delete that off your list, particularly if you run JR. I don't know about Futaba, but JR specifically states NOT to use li-ions in ANY of their transmitters. Like Reza, I am sure others have been doing it successfully, but others have had failures. A 2100-2700 nimh will last 12-15 hours, so why do you even need li-ions?

If the manufacturer doesn't sanction the usage of a particular voltage/battery you do it at your own (and possibly others) risk.

Its a *wish* list. Not everything on the list is available or sanctioned by the manufacturer. But it should be. Thats the feature of a bog standard 6 channel radio system. Futaba has some high end radios with Li-Ion batteries but not a single 2.4Ghz radio from anyone has that feature.

NiMh self discharge and, unless you use a special charger, take a long time (12 hours!) to charge back up. Li-Ion maintain their charge level and charge in about an hour. You charge it after flying and forget about it till next time. Its much more convenient. Cell phones have used them for years, its time Tx's caught up.

[Mark Davis]

It appears you will still need either matchboxes or a power expander for proper power distribution to multiple servos per surface...

[jaybenson]

Certainly not throwing my powerbox's out for this. It don't regulate, Expand or match servos. Why run all that power if your just going to run a single lead to a matchbox and then have that single lead/matchbox/equalizer/Y harness feed 2 or 3 high power servos. I want my servos eating power from the source on there own individual lead.

[Wayne]

	Quote: Originally Posted by bodywerks
	A 2100-2700 nimh will last 12-15 hours, so why do you even need li-ions?

Because they will be lighter...

[aviti]

	Quote: Originally Posted by Torqued-Up
	It appears you will still need either matchboxes or a power expander for proper power distribution to multiple servos per surface...

Well we are using less servos per surface with higher power servos so many 40%ers are now using 8 servos for ailerons, rudder, elevator. Once the 12 channel receiver comes out you be able to run separate channels for each servo like people already do with the 14 MZ. I already mix 4 channels with my 10X and AR9000 to run 4 aileron servos with no matchboxes. The servo matching is done in the transmitter.

[airborneSGT]

Reza,

I think you might be confused. I was NOT talking about unregulated lithium ion packs. Lions have a nominal 8.4v.

I was talking about A123 cells. Running them at 6.6v is possible without the use of any regulators. I tihnk you might have confused what I was talking about.

Yes I have heard that people run un regulated Lion packs. However at 6.6v that the A123 cells offer I cant see the need for the use of regulators. Using A123 cells at 6.6v without regs going straight to the power box or RX is ideal especially considering they can handle 30C burst which is possible with a 40% plane.

[Reza]

No I am not! Post#5 and 18 were talking about Li-Po, Li-Ion batteries.
In your case at 6.5v I don't think you would have any problems either

	Quote: Originally Posted by airborneSGT
	Reza, I think you might be confused. I was NOT talking about unregulated lithium ion packs. Lions have a nominal 8.4v. I was talking about A123 cells. Running them at 6.6v is possible without the use of any regulators. I tihnk you might have confused what I was talking about. Yes I have heard that people run un regulated Lion packs. However at 6.6v that the A123 cells offer I cant see the need for the use of regulators. Using A123 cells at 6.6v without regs going straight to the power box or RX is ideal especially considering they can handle 30C burst which is possible with a 40% plane.

[yakwrecker]

This thing is sweet. Im so glad spektrum stepped up and dropped something that will totally eliminate the need for alternate power for those who just want to run an RX. I saw this unit in QQ's big python at the DOGS show and i kinda scratched my head for a while then it hit me just exactly what they were doing. I know what will be going in my Carden now!!!!!!!

[bodywerks]

	Quote: Originally Posted by Wayne
	Because they will be lighter...

Ha! I'm a weight freak and even I won't buy into that!
Just for everyone's info, I know this isn't in all of JR's tx manuals, but it was in my 9303 2.4 manual and specifies ALL JR transmitters:
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 2.4 system will operate for over 15 hours
using a 2700mAh Ni-MH battery.

[aviti]

The other day I was re-positioning my Spektrum AR 9000 receiver higher up in my fuselage. I was amazed at how much better results I got from my data logger on the main receiver antennas by raising the receiver 3 inches. Then it came to me, why not have all remote receivers and the main unit just be the place you plug in your servos. That way, it won't matter where you mount the thing. I just figured Spektrum thought of this before me. I was right but I am surprised at how soon this thing will be available. It is much easier to position the remote receivers that just have one wire coming out of them. Now get us a 12 channel unit like this to go along with the 12X and I'll be totally happy. Soon I hope.

[dick hanson]

	Quote: Originally Posted by aviti
	The other day I was re-positioning my Spektrum AR 9000 receiver higher up in my fuselage. I was amazed at how much better results I got from my data logger on the main receiver antennas by raising the receiver 3 inches. Then it came to me, why not have all remote receivers and the main unit just be the place you plug in your servos. That way, it won't matter where you mount the thing. I just figured Spektrum thought of this before me. I was right but I am surprised at how soon this thing will be available. It is much easier to position the remote receivers that just have one wire coming out of them. Now get us a 12 channel unit like this to go along with the 12X and I'll be totally happy. Soon I hope.

I was surprised when I saw guys burying rx down on expander boards or in belly of plane
was I the only one who looked at those tiny whiskers for antennae and said - "It would be best to put this thing where it could see the TX."
so that's how I started - and continued - and with 8 setups -no problems. I did same thing with the 33% EDGE /Cap etc..

[dick hanson]

	Quote: Originally Posted by bodywerks
	Ha! I'm a weight freak and even I won't buy into that! Just for everyone's info, I know this isn't in all of JR's tx manuals, but it was in my 9303 2.4 manual and specifies ALL JR transmitters: 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 2.4 system will operate for over 15 hours using a 2700mAh Ni-MH battery.

LiPos is fer foamies
period.