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E-flite . Fast Lad Performance . Ace Hobby

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Radio - JR & Spektrum DSM > Is it o.k to put a lipo in my DX7?
 
 
Heli Davey
Senior Heliman
Location: springfield,mass

My Posts This: Topic  Forum		Hello,is it o.k to put a lipo in?

TREX 250*TREX 450PRO*TREX 500ESP*TREX 600NSP*TREX 700N LE*
10-30-2009 06:49 AM
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S76 Mech
Elite Veteran
Location: Hatboro, Pa.

My Posts This: Topic  Forum		yes. for added insurance against blowing the fuse, I added a Deans and charge thru it. I don't charge thru the charge port. never had an issue.



Rick Cotte
Team MRC Hirobo
10-30-2009 11:16 AM
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rcmiket
Heliman
Location: El Paso,Texas

My Posts This: Topic  Forum		I've had one in my DX7 for over a year with any problems.
Mike
10-30-2009 01:33 PM
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Heli Davey
Senior Heliman
Location: springfield,mass

My Posts This: Topic  Forum		Can i fully charge my lipo or leave it at around 11 volts?

TREX 250*TREX 450PRO*TREX 500ESP*TREX 600NSP*TREX 700N LE*
10-31-2009 01:40 AM
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Avropilot
Veteran
Location: Murfreesboro, Tennessee

My Posts This: Topic  Forum		Fully charge it and fly forever without recharging.

Sometimes your the bug......Sometimes your the windshield
10-31-2009 01:52 AM
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Mr.Green
Senior Heliman
Location: Kaysville, Utah

My Posts This: Topic  Forum		It should work fine. If I remebmer right I think the members name is Rodney who makes the red Li-Po pack shown above. They are great and last forever.
10-31-2009 02:29 AM
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CEGLOBAL
Heliman
Location: Lahaina, Hawaii - United States

My Posts This: Topic  Forum		Lipo

Heli Davey

I have been using the Rhino 2620 mAh Transmitter battery from Hobbycity in my DX7. Works great, inexpensive, charge lasts the whole month. Here is a link:

http://www.hobbycity.com/hobbycity/...ter_Lipoly_Pack

Here is another one that is available:

http://www.hobbycity.com/hobbycity/...ansmitter_Pack_(Futaba/JR)

Both batteries already come with the connector attached to use in either a JR/Spektrum or Futaba transmitter.
10-31-2009 03:56 AM
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Cameron
Key Veteran
Location: St. Johns, Florida

My Posts This: Topic  Forum		The only problem I have seen with a lipo in a DX7 is people think they can charge the lipo while it is in the radio through the charge port on the side of the radio. That is a big no no and will surely cause problems because the radios' electronics are not designed for the high currents that are involved with charging lipos.

Cameron
11-04-2009 04:10 AM
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skint eastwood
Heliman
Location: uk

My Posts This: Topic  Forum		forget the lipo and get a set nimh 2800 Mah.

1. Lasts as long if not longer than a lipo
2. wont invalidate your warranty
3. wont blow a fuse
4. can be charged through the charge jack
5. wont be worth zip if you accidently leave your tx on
6. wont puff destroying the plastic lips on the back plate
11-04-2009 04:48 PM
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Busher
Key Veteran
Location: Manchester, England

My Posts This: Topic  Forum
Quote 
forget the lipo and get a set nimh 2800 Mah.

1. Lasts as long if not longer than a lipo
2. wont invalidate your warranty
3. wont blow a fuse
4. can be charged through the charge jack
5. wont be worth zip if you accidently leave your tx on
6. wont puff destroying the plastic lips on the back plate

+1 to that, Why would you bother?

Good luck
Busher
11-05-2009 06:03 PM
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Chickenrun
Senior Heliman
Location: England UK, not RIP off Europe.

My Posts This: Topic  Forum		skint eastwoods right

Trex 700/600's, OSHZ, Futaba BLS 251-252-253, GV1's, GY520's, Spektrum, Bantam BC8DX8
11-05-2009 10:34 PM
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jrockstuart
Elite Veteran
Location: Allen, Texas

My Posts This: Topic  Forum		Add two diodes to the positive lead of the lipo to bring the voltage down to 11.1V when fully charged. Then fly every day for a month without recharging.

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies
11-06-2009 03:09 AM
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Heli Davey
Senior Heliman
Location: springfield,mass

My Posts This: Topic  Forum		jrockstuart
What diodes did you use?

TREX 250*TREX 450PRO*TREX 500ESP*TREX 600NSP*TREX 700N LE*
11-07-2009 01:50 AM
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turboomni
Elite Veteran
Location: 63 Rambler Down By The Dumpster

My Posts This: Topic  Forum		It is so obvious to many of us lipo in a tx users that the use of lipos in your tx not only complicates charging and the warranty is thus voided BUT the FEEL OF THE TX AND HELI is so much better.
I can really tell the difference in the PERFORMANCE Of the Heli with these different electrons running my tx!! I think its faster...I feel more connected,,it is awesome,,,
good grief

Setup is everything, All my heli's can fly better than I can pilot them
11-07-2009 05:26 AM
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ckd
Senior Heliman
Location: Saugus CA

My Posts This: Topic  Forum
Quote 
It is so obvious to many of us lipo in a tx users that the use of lipos in your tx not only complicates charging and the warranty is thus voided BUT the FEEL OF THE TX AND HELI is so much better.
I can really tell the difference in the PERFORMANCE Of the Heli with these different electrons running my tx!! I think its faster...I feel more connected,,it is awesome,,,
good grief
No but my 9303 is lighter with a lipo and I no longer have to worry about using all different types of chargers. Everything being lipo makes my life easier.
11-07-2009 05:45 AM
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turboomni
Elite Veteran
Location: 63 Rambler Down By The Dumpster

My Posts This: Topic  Forum		YOUR 9303 DIDNT COME WITH A CHARGER?? Stock run times are about six hours. Maybe a neck strap is in order to cope with the extra weight with the stock NMH battery.

Setup is everything, All my heli's can fly better than I can pilot them
11-07-2009 06:00 AM
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jrockstuart
Elite Veteran
Location: Allen, Texas

My Posts This: Topic  Forum		I explained how to modify a lipo for use in a transmitter in this thread:

http://rc.runryder.com/helicopter/t464089p1/

I think a lipo is much better than the stock "brick" NiMH pack. The transmitter weighs considerably less, so you do not need as big of a neckstrap balancer anymore. Charging is easy since you only need to do it once a month. You can buy rubber caps at Lowes or Home Depot to cover the stock charging jack if you are concerned you might accidentally try and connect a wall-wart to your lipo. If you install the diodes, then the voltage is no different from the NiMH pack so nothing will be damaged. Before you send the TX in for service, remove the lipo and reinstall the NiMH pack so you won't "void your warranty".

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies
11-07-2009 01:34 PM
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ckd
Senior Heliman
Location: Saugus CA

My Posts This: Topic  Forum
Quote 
YOUR 9303 DIDNT COME WITH A CHARGER?? Stock run times are about six hours. Maybe a neck strap is in order to cope with the extra weight with the stock NMH battery.
Yes it did come with a charger but who wants all these different chargers laying around. I do use a neck strap and your going to tell me if you had 1 pound or 2 pounds hanging on your neck you wouldn't tell the difference? If you want I can send you my charger so you have 2.
11-08-2009 12:14 AM
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Rob P77
New Heliman
Location: Middletown, DE USA

My Posts This: Topic  Forum
Quote 
I explained how to modify a lipo for use in a transmitter in this thread:

http://rc.runryder.com/helicopter/t464089p1/

I think a lipo is much better than the stock "brick" NiMH pack. The transmitter weighs considerably less, so you do not need as big of a neckstrap balancer anymore. Charging is easy since you only need to do it once a month. You can buy rubber caps at Lowes or Home Depot to cover the stock charging jack if you are concerned you might accidentally try and connect a wall-wart to your lipo. If you install the diodes, then the voltage is no different from the NiMH pack so nothing will be damaged. Before you send the TX in for service, remove the lipo and reinstall the NiMH pack so you won't "void your warranty".
Im trying to figure out how a diode or two diodes is going to drop the voltage. How in the circuit are you connecting the diodes? Series? parallel? I can see a big enough resistor dropping the voltage to 11.1 but a diode is merely a check valve for electricity. Explain please.
11-08-2009 12:29 AM
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jrockstuart
Elite Veteran
Location: Allen, Texas

My Posts This: Topic  Forum		Garden variety diodes drop forward voltage about 0.7v each irregardless of the size or capacity of the diode. Two of them in series will drop the forward voltage by 1.4V which drops a 12.6v pack down to 11.2V. You can buy other kinds of diodes which only have a forward voltage drop of 0.4V, but they are expensive.

A diode is like a one-way valve. There is some resistance in the valve, thus the voltage drop.

If you could make a diode with zero voltage drop, you would be a billionaire.

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies
11-08-2009 12:31 AM
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Radio - JR & Spektrum DSM > Is it o.k to put a lipo in my DX7?
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