N Spektrum 9 channel RX designed just for Giant Scale

[Eury]

Damn, right after I bought a new AR9000. That's an awesome setup, exactly what we've been needing.

[airborneSGT]

So any word on those RC car packs for planks?

[bodywerks]

	Quote: Originally Posted by airborneSGT
	So any word on those RC car packs for planks?

Someone already answered your question. I have been using those batteries in my H9 260 with GREAT success - no regs needed, as they stabilize at 3.3V per cell. The nice thing is that they maintain a VERY stable voltage throughout their entire useful capacity, which is about 2,000mah. I will never run li-ions or lipos for rx power ever again, period!

[airborneSGT]

Sweet! I didnt see that post. No more lions for me either! This saves me some serious $$ and makes setup simple.

[Reza]

Using 8711 or 8611a without regulator on Li-Ion will substantially shorten the life of servos. Depending how much you work the servos, you can easily burn the motors I would think. I have not done this myself but know of some people who have and burnt the servos. Please make sure to check with Horizon Hobby tech support people before you take any chances on your investment. If they gave you the OK then this would be sweet! No worries about regulators, that would be awesome!

Receiver looks killer BTW. :-)

[Wayne]

Reza,

Mike Mc and Jason Noll have been using 8711's with Li-poly's and no regulators for sometime now with zero issues.

[airborneSGT]

I am curious as how unregulated A123 cells at 6.6volts will kill my servos. I usually run them at 6.5 anyway.

[Reza]

Hi Wayne,

I think best bet would be to check with HH customer support. If people start using them and see failures while it is not recommended by HH(if that's the case, I don't know), not only they will be at risk of loosing their investment but also HH won't be able to help them as they voided the warranty!

I have no doubt in what you are saying is the Truth but I am just not sure if those servos are designed for 8.4v! and I have seen failures! My case holds true as yours. Boils down to the specs of the servo and operating condition they are designed for and most of all if HH recommends such procedure or not!!

Again I am sure you have knowledge of those cases using them and I have seen the opposite as well but it is extremely important that everyone follows and operates within the spec product is advertised and designed for.

I deal with Structural analysis of real aircraft. Depending of the structure I am doing analysis on, margin of safety that we consider in our analysis varies. Let's say my analysis showed something is going to hold 10,000lbs with 15% margin of safety. If the customer ignored the condition and kept loading that part well over what it was designed for, if it doesn't fail immediately, I assure you, it will fail a lot sooner than its life span. I am not an electrical engineer but IF those servos are not designed for 8.4, they will fail a lot sooner than their normal span when mis-used!

Sorry for the long post but people read these things and will do what is recommended by trusted people in this hobby. If we make any mistake we can cost someone else a loss. I rather be safe than sorry. I would still suggest who ever wants to do it, to check with HH. I would not take a border line answer as a yes either. Please make sure you are good to go before you do this!

Again sorry for the long post. Have fun guys, Reza

[Reza]

Li-Po are 8.4v

	Quote: Originally Posted by airborneSGT
	I am curious as how unregulated A123 cells at 6.6volts will kill my servos. I usually run them at 6.5 anyway.

[aviti]

This receiver addresses so many issues. If you are a gadget geek you might be disappointed though. Sure, you get one new gadget (the receiver) but you eliminate all kinds of other expensive gadgets like fancy dual switches, dual regulators, bat shares, power expanders, fail safe swithces, etc, etc. While it was fun doing show and tell at the flying field while assembling my airplane, I really won't miss telling everyone who looks inside my plane what all the little gadgets are for. Our big planes will look just like the inside of a trainer. 2 Batteries, a switch and a receiver....

[gareth.ky]

Oh goody goody, I can cross something else off my radio wish list:

• 2.4Ghz, no frequency board, no shoot downs.
• Lithium Ion Tx batteries
• Tie the Rx to the Tx model memory (aka Model Match)
• 16+ gauge lines into the Rx power bus
• New high current (10A) servo connector standard
• Servos/Rx work on 7.4v lipo packs
• Better than 10 bit resolution
• Tx works as a USB powered] PC controller/charges on USB

Radios still have a long way to go but this is one step in the right direction.

[bodywerks]

	Quote:
	Lithium Ion Tx batteries

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?