Transmitter battery mod to Futaba 9 ZAP

[Peter Pennisi]

Thanks for the tips guys
 
Regards,
 
Peter
 

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Tony Stillman
Sent: Wednesday, 26 February 2003 07:40 AM
To: discussion at nsrca.org
Subject: Re: Transmitter battery mod to Futaba 9 ZAP


Keith:

Yes, we sell quite a bit of 1650 NiMH packs for the 9Z and 10X radios.
 
Tony Stillman
Radio South, Inc.
3702 N. Pace Blvd.
Pensacola, Fl 32505
www.radiosouthrc.com
800-962-7802

----- Original Message ----- 
From: Keith  <mailto:khoard at midsouth.rr.com> Hoard 
To: discussion at nsrca.org 
Sent: Tuesday, February 25, 2003 2:41 PM
Subject: Re: Transmitter battery mod to Futaba 9 ZAP

Tony,
 
    Are you putting NiMH batteries in alot of Tx's??
 
 
Keith L. Hoard
Cordova, TN
khoard at midsouth.rr.com
 
"Going to war without the French is like... going into the ninth inning
without your place kicker"
 
 

----- Original Message ----- 
From: Tony  <mailto:tony at radiosouthrc.com> Stillman 
To: discussion at nsrca.org 
Sent: Tuesday, February 25, 2003 1:32 PM
Subject: Re: Transmitter battery mod to Futaba 9 ZAP

Troy:

Yes, the new 9Z's now come with 1100 mah packs.  
 
However, most ALL brands of transmitters use the same amount of current
to operate.  80% of the current requirements are created by the RF
module.  Since all systems are putting out virtually the same RF output
power, they are all about the same current draw.  A typical "computer"
transmitter will pull about 20 mah more than a "non-computer"
transmitter, no matter if it is a 4-channel or a 10-channel.  
 
What makes most people think they get less flying time is that they
don't run the tx down as far as it is designed to go, which is fine.
Most quite flying when the tx gets below 10 volts!  
 
Futaba does make a "jumper" plug that plugs into the back of the battery
pack when removed from the tx.  This will 'by-pass" the diode for
fast-charging or cycling purposes.  JR does not have a diode so
discharging and fast charging is not a problem.  However, they do have a
soldered in fuse that is really a bummer when it blows, because it is
not user-friendly to replace without soldering skills.  
 
 
 
Tony Stillman
Radio South, Inc.
3702 N. Pace Blvd.
Pensacola, Fl 32505
www.radiosouthrc.com
800-962-7802

----- Original Message ----- 
From: Troy  <mailto:troy_newman at msn.com> Newman 
To: discussion at nsrca.org 
Sent: Tuesday, February 25, 2003 11:59 AM
Subject: Re: Transmitter battery mod to Futaba 9 ZAP

Peter,
 
Futaba sells a little jumper than is inserted into the battery output
plug when the battery is removed from the TX. This will jumper the diode
and allow you to peak charge and cycle the battery but only when it is
removed from the TX...This setup works good and you can still have the
advantages of the diode. I fly the JE10X now but used to fly the 9Z and
I just had spare battery packs...The 9Z had way too small of a battery
pack and a really high current drain. The JR 10X is much better in this
aspect 1100mah and lower drain...Now I have heard the newer WC2 has a
bigger battery capacity but don't know...I never had one
 
 
Troy Newman 

----- Original Message ----- 
From: Peter Pennisi <mailto:pentagon.systems at bigpond.com>  
To: discussion at nsrca.org 
Sent: Tuesday, February 25, 2003 8:08 AM
Subject: Transmitter battery mod to Futaba 9 ZAP

I  would like to cycle the battery in my Futaba 9 ZAP WC2. I noticed
there is a diode incorporated in the batter pack. Is it ok to bridge or
short the diode so that I can discharge and occasionally peak detect
charge my transmitter or is there some other way. I am aware of the
consequenses of not having the diode there.
 
Thanks
 
 
Peter
 

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