Heli beginner badly needed help!!!

Heli beginner badly needed help!!!

Post by Aznan Sa » Wed, 18 Dec 1996 04:00:00



To any experience RC pilot,
Ive just bought a used heli, Concept 30DX. Have not fly it yet. I
bought a used Airtronic heli radio that comes with 600mah Rx batteries
to go with it. Since I already have one other 600mah Rx battery from
my old airplane, I intended to use both batteries using Y-connector to
give 1200mah.(2 batteries in parallel connection), to power all 5
servos and the gyro. I think I can save some bucks here.

Now,I have got everything connected but have no gut to switch it on,
afraid that I might blow the Rx.

Please advice me, AM I doing it the right way.

Aznan Saad

 
 
 

Heli beginner badly needed help!!!

Post by Wayne D. Hillenbra » Thu, 19 Dec 1996 04:00:00


Bad idea. You should not connect nicads in parallel do to the
different charecteristics of each cell and battery pack. You can hook
the second up as a "standby" if you have a diode in line, but my
suggestion is get a 1200 MAH pack and be safe.

Wayne

Quote:

>To any experience RC pilot,
>Ive just bought a used heli, Concept 30DX. Have not fly it yet. I
>bought a used Airtronic heli radio that comes with 600mah Rx batteries
>to go with it. Since I already have one other 600mah Rx battery from
>my old airplane, I intended to use both batteries using Y-connector to
>give 1200mah.(2 batteries in parallel connection), to power all 5
>servos and the gyro. I think I can save some bucks here.
>Now,I have got everything connected but have no gut to switch it on,
>afraid that I might blow the Rx.
>Please advice me, AM I doing it the right way.
>Aznan Saad


 
 
 

Heli beginner badly needed help!!!

Post by CASO » Fri, 20 Dec 1996 04:00:00


you have a 500.00 dollar investment in the helo ,another 350.00 in the
radio and you are going to scimp on the batteries BAD IDEA . helos EAT
BATTERIES you have 5 servos and a gyro  by setting it up like you are you
are exposing yourself to two times the chance of a cell going bad etc etc
. you can by a jr pack for 22.00 these are called extra cells and they are
great               dave

 
 
 

Heli beginner badly needed help!!!

Post by David Turnbu » Tue, 24 Dec 1996 04:00:00


Quote:

>To any experience RC pilot,
>Ive just bought a used heli, Concept 30DX. Have not fly it yet. I
>bought a used Airtronic heli radio that comes with 600mah Rx batteries
>to go with it. Since I already have one other 600mah Rx battery from
>my old airplane, I intended to use both batteries using Y-connector to
>give 1200mah.(2 batteries in parallel connection), to power all 5
>servos and the gyro. I think I can save some bucks here.

>Now,I have got everything connected but have no gut to switch it on,
>afraid that I might blow the Rx.

>Please advice me, AM I doing it the right way.

Yes, you can use the batteries in parallel.  This works fine providing the
batteries are of similar types, as flight packs are.  However, putting SCRCs in
parallel with SCs wouldn't be a good idea, but probably wouldn't show any
adverse effects other than the lower resistance cells draining first and wearing
out first due to cadmium migration.

While you are at it, why not install a second switch also.  Switches often go
bad and the extra weight isn't much.  Besides, you won't need to buy the Y
harness and you will then have two charge cables.  Also, don't leave the
batteries in parallel when the heli is not powered on as you would have to do
with only one switch and a Y harness, they will self discharge faster than
normal.

In case it isn't obvious, you must test the packs separately with your ESV.

Flames are always welcome, but be warned that I have extensive knowledge of
Ni-Cd technology.  Also, I'd be happy to answer any questions while I'm here on
the newsgroup.  I'll be sure to keep subscribed here for at least a few weeks.

David  AMA# 543851  FCC# N9OMH

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