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SPECTRUM RADIO

Old 04-04-2010, 08:26 AM
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gunneredwards
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Default SPECTRUM RADIO

Just picked up a spectrum dx7 with 2 receivers, but no battery pack or servos. What would be a good receiver pack and which servos will plug into the receivers? the receivers are: spectrum ar7000, jr r921 2.4
Old 04-04-2010, 08:33 AM
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Insanemoondoggie
 
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Default RE: SPECTRUM RADIO

Depends on the type of plane. For standard servos I use JR Sport ST47BB and for higher performance planes I use Spektrum DS 281's ,both work well with 4.8 and 6.0 volt and the speed and torque are pretty good.
I used some Towers JR ball bearning servos and had really good luck with them also. Sometimes they run a good sell on them
Old 04-04-2010, 08:54 AM
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gunneredwards
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Default RE: SPECTRUM RADIO

What brand of battery pack will plug into the receivers?
Old 04-04-2010, 09:00 AM
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Default RE: SPECTRUM RADIO

Any receiver battery will work there's nothing special about them.

I'd reccomend 5 cell 6v packs. hangtimes.com has a large selection
Old 04-04-2010, 09:04 AM
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gunneredwards
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Default RE: SPECTRUM RADIO

is there a specific name for the connector? I am used to using the futaba j connector and nothing i have will plug into these receivers.
Old 04-04-2010, 11:12 AM
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Default RE: SPECTRUM RADIO

Just shave the tab off if its a Futaba.
Old 04-04-2010, 05:21 PM
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carrellh
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Default RE: SPECTRUM RADIO

ORIGINAL: gunneredwards
is there a specific name for the connector? I am used to using the futaba j connector and nothing i have will plug into these receivers.
The following connectors are pretty much the same as JR and Spektrum
Hobbico - U
Hitec - S
Airtronics - Z
On occasion a corner or two may need to be shaved a little for a good fit. I've had a couple of Hitec servos that needed a slight shave to plug into a Hitec receiver. It was probably 'molding flash' but a few swipes of a #11 blade took care of it.
As noted, shave off the "J" tab and your Futaba stuff should plug in.

Carrell
Old 04-04-2010, 05:32 PM
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SeamusG
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Default RE: SPECTRUM RADIO

If you use a combination switch / charge port make sure that it has 3 wires. This will allow you to insert the Spektrum bind plug into the charge port when you bind the Tx with that particular Rx.

I use 4.8v 1500 mAh NiMH and 6.0v 1700 mAh NiMH batteries. When I replace batteries I will likely use 6.0v mAh packs from here on. Just a bit of protection should there be a significant momentary demand placed on the battery causing it to drop below 4.5v sending the Rx into a "reconfiguration" mode which may take a second or two without any Tx control over the plane. Not a big issue just a bit of insurance.


Old 04-04-2010, 08:17 PM
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Default RE: SPECTRUM RADIO


ORIGINAL: gunneredwards

Just picked up a spectrum dx7 with 2 receivers, but no battery pack or servos. What would be a good receiver pack and which servos will plug into the receivers? the receivers are: spectrum ar7000, jr r921 2.4
I have the JR x9303 2.4, and thats the same set up as yours. By the way , you have a good radio.

I use hitec 425BB servos with a JR plug on the end the JR plug end will fit your RX. As for the RX battery, I like 2500 mah MiMH battery and again get them with the JR plug on them. They will fly a plane all day.

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