mike gruenwald

will the spectrum module and rx work with a futaba 9zap? Remember that the 9zap has a ball joint, swivel, and if I'm correct, non removable tx antenna?

robert85614

Will the Hitec Optic 6 module be supported?

Bill Martins

In regards to the Lipo flight pack 7.4 volts, I believe I read in a thread on another forum that Paul Beard (DX 6 and 7 creator) has been using lipo packs in his aircraft for the last six months or so. The voltage range for Spektrum and JR receivers and servos is stated at 3 to 9 volts. So I am looking forward to using a lipo pack in my next plane. More speed and torque!

If the person in this thread was talking about any components other than Spektrum or JR then yes you will still need a regulator.

I have a DX 7 and 14 MZ, so I am exited to be able to use the programming features on my MZ with this new module. A little bummed that the model match and servo sync are not available.

May have to watch and wait a little while and see some field results. Hopefully Futaba will get it together soon.

Bill

flatlandmike

My Feedback: (17)

JR rx's are restricted to 4.8 to 6 volts; dont try to use a li-po on a jr rx with out a reg.

vintageflyer

My Feedback: (1)

What advantage would there be to not use I reg.? I don't understand.

DM

Bill Martins

Jan 06, 2007, 09:53 PM
beardp
Registered User

This is what I was referring to. He doesn't actually mention the receiver. Bill


Join Date: Nov 2005
Location: San Jose
Posts: 79 I use 2S lipos on my Heli directly. I have been running this setup for that last 6 months (since IrCHA).

I have a 5V regulator for the Gyro only.

The AR7000 and the JR Z9000S servos have no problem with this setup.

It is my understanding that all JR digital servos can run up to 9V. I have no direct experience with any other servo brand.

Paul

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Last edited by beardp : Jan 06, 2007 at 09:58 PM.

flatlandmike

My Feedback: (17)

with the jr there is no advantage since you would eventually burn it out. if a system coul dhandle high volts of an unreg li-po then you dont have to spend money on a reg you would have high torg and faster speeds.

The down side of no req on a system wether it could handle the high volts or not is that the torg and speed of the servos are constantly slowing and decreasing, changing the way the plane reacts . For this reason when the systems are made to handle the load i will just get a reg that has a higher out put maybe 7.5 or something close to it for that extra speed and torg.

flatlandmike

My Feedback: (17)

i just looked for that jr rx and i cant find it if it is a new rx thats being tested then that would explain it but other wise there is no jr rx that can handle anything other than 4.8 to 6 volts

to me though the name of it suggests itis the name of a spectrum rx that is misspelled maybe


Edit that is a servo by the post it makes no mention of a jr rx sorry just noticed ill look for that servo right now maybe they have it on their site

edit part 2 I found some dz9000s servos but it doesnt mention any volt range just what speed and torg it has at 4.8 and 6 volts

jstok

I have may have missed it on the thread,but as a proud 14mz and DX7 owner and what is
Futabas point of view on this conversion? by using this does the mfg run for cover if any problems crop up?

Bob Pastorello

My Feedback: (198)

Bill - I've been following that other forum's threads on this pretty closely, also. I believe what Paul is referring to is the setup he has been using in his helicopters (at least that's a reference from someone about Mr. Beard). The published data does state that the AR9000 can tolerate up to 9v input voltage to it.

The concern by some is actually what is the "max voltage" of various servos, as clearly that would seem to be the voltage-limiting system factor at this point. I know the JR digitals don't like the first few minutes hot off a charge from a 5 cell NiMh, but they don't burn up, either.

If servos were capable of tolerating the 7.4 of a 2S LiPo, then systems would not need regulators, which reduces multiple connection potential failure points. Often, simple (less parts) is more reliable. Just having an extra and usable "second battery" input in the AR9000 is quite a feature worth having. (The "data" port can be the second battery/switch connection)

Do you have some links to info on higher voltage servos?

kaastrup

Here is the information in German....Very nice servoes...

http://www.acteurope.de/html/7_5_volt-servos.html

Eric.Henderson

I was wondering if anyone knows how the DSC cord will interact with the new RX's. I use it quite a lot during set-up etc. in the workshop, but will most likey not need it at a club site because I won't be on anyone's frequency!

Please excuse all the questions but until I get one of my own I cannot find any deeper info on the subject.

Regards,

Eric.

Bob Pastorello

My Feedback: (198)

Eric - Mike McConville suggested (reminded) me that DSC cords are "obsoleted" by the DSM system. When you power up the TX/RX setup, it's going to act the same whether at home or afield. It is a "habit" I have to unlearn, too.

MMallory

My Feedback: (1)

Bob,

Just don't learn the Spektrum way and forget if you fly a traditional radio. We are going to need eyes in the back of our heads for the absent minded guys who switch back and forth.

Mark

BaldEagel

A Question I have not seen asked, forgive me if I have missed it, but If I have a 2.4 modual in my Zap can I still buddy with my FF7, for training.

Mike

Bob Pastorello

My Feedback: (198)

You're right, and I *hope* I'll always keep the head on a swivel!!

Mike Wiz

My Feedback: (2)

Our club is going to make several 2.4Ghz pins and require us to continue to use the "take a pin" and radio impound system just to keep continuity. I think it's a good idea even though personally I wish I wouldn't have to keep doing that.

davewallace

My Feedback: (29)

Baldeagle,
The power and RF come from the instructors transmitter and you don't turn on the buddy box. A buddy box doesn't even have to have an RF module of battery.

Dave

d_wheel

I am thinking of having a shirt made up with the message on the back "No, I'm not pinned. I'm on 2.4 ghz".

Later;

D.W.

vintageflyer

My Feedback: (1)

Yeah, but the Spektrum and Xtreme will be using the trainer output of these radios.
Very good question BaldEagle.


DM

Rabbitcreekok

When a JR is used as a buddy box, it has to have a battery to complete the circuit, but it does not have to be turned on to work as a buddy box.

Eric.Henderson

The problem is that the when radio RF is on it consumes a lot of battery. If you uset the DSC the battery consumtion is very small.

Bob Pastorello

My Feedback: (198)

THat's true of the 72Mhz stuff, but the 2.4 Ghz are VERY low power consumption. My DX 7 actually ran for almost 11 hours before the low battery alarm. Plus, it's perfectly safe to leave on, because the antenna is connected, and normal loading...normal rf output.

Food for thought....

rmh

It really isn't a very power hungry system -- -I think -at least 6 hours on a charge -flying- with std DX7 battery .
I am cutting up old DSC cords for extensions in smaller planes -also I have now made up some 123 flight packs and as soon as the weather permits I will fly em in various plane - I have 27%/ 33% and 42% sized toys (all on DX7 radios and the two cell packs just run wild - typical measured voltage once hooked up to rx is a bit above 6.6 volts the cells are 3.6 -also charged at 3.6 so 7.2 is what my model sees - this is same as my 4300ma 5 cell NIMH put out -in fact the initial installed reading on the NIMH is slightly higher - the big difference is weight - my new 2300 ma packs are 5.5 ozs with 3 wire setup to allow monitored ,balanced fast charge at field . A Cellpro 4 123 charger charges at 3 amps - actual usuable amperage is 2000 per two cell pack -afer that the cells take a real nose dive -so I will have to fly n try to really know if I recharge each flight - every other flight- whatever - doesn't matter --but I can recharge at 10 amps (really ) and fill em up as fast as I can fill up the gas tank.
Oh yeh next setup is a home made pattern thing- with the new ZDZF3a and the DX7 and 123 cells etc.
It's a new year --- why not ---

undertaker29

My Feedback: (1)

I am confused. Why is the Futaba 8U excluded???