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HomeRC & Power✈️Aircraft🚁HelicopterRadio - JR DMSS › JR Century 7 Single Stick Radio - Wounded Warrior
03-23-2015 04:10 PM  4 years ago
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Heli_Splatter

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USA

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JR Century 7 Single Stick Radio - Wounded Warrior
I managed to score a Century7 JR single stick radio. It has an amateur band module. 53mhz channel 1. BTW, I have a Tech License. Is it possible to use a 2.4module in this radio? I was planning to give it to a wounded warrior who lost an arm. Can anyone give me some more information on this radio. It sure is cool for an old radio.

Is it worth anything?... I have 3 non JR brand receivers that work with it. All three are FMA Direct.

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03-23-2015 06:00 PM  4 years ago
JuanRodriguez

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The Villages, Florida

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Radio South can convert that to 2.4

While it might be worth little to most (unless you're a collector), I'm sure it will be worth a TON to the person receiving it from you !
Been there, done that and old enough to know better.....
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03-23-2015 06:15 PM  4 years ago
Heli_Splatter

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USA

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It is module based, so I am hoping that buying/or trading for a 2.4 module will allow the radio to go forward. The radio will be ok for scale flight, but CP helicopters not so much. I might be able to move the gimbal to another JR radio and that would give me pitch and throttle curves... Work In Progress. It all starts with an idea.

If anyone is looking for some Futaba 53mHz band receivers, I have 7 of them plus some spare crystals and a transmitter module. Anyone?
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03-24-2015 01:35 AM  4 years ago
JuanRodriguez

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The Villages, Florida

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Don't be too sure about that .... I'm sure you've heard of Curtis Youngblood? He flies (or flew) single stick transmitter and I'm sure it had collective pitch ....😉Been there, done that and old enough to know better.....
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03-24-2015 01:39 AM  4 years ago
dgoss999

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UK - Lancashire

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His pitch control was done with a wheel on the side of the Tx..
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03-24-2015 01:47 AM  4 years ago
Dr.Ben

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Richmond, VA, USA

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Curtis won his first World Championship with that transmitter and conceived many of the 3D maneuvers we fly today with it as well.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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03-24-2015 02:07 AM  4 years ago
Four Stroker

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Atlanta

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There was a lot of discussion about how to build a 4-axis stick exactly for guys with one arm some years ago. It was suggested:

1) Sit in a chair and use foot pedals for rudder.
2) Rudder knob would also go up and down for pitch.
3) A car type pistol grip with trigger pitch on the end of the stick would also turn for rudder.

As far as I know none of this was really developed. Several machinists offered to help for free.
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03-24-2015 03:33 AM  4 years ago
Santiago P

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Dayton

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I have seen people plug in a DSM2 module on Century 7 TX with no mods.
The pin-outs are the same. Is a viable option.

Radio South can make a cleaner a better mod for current DMSX or even FASST modulation.

Santiago
Team Minicopter - PeakAircraft.com
FUTABA.USA - Team Kontronik - Scorpion Motors-
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03-24-2015 04:14 AM  4 years ago
dkshema

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Cedar Rapids, IA

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With single stick radios the stick yields aileron and elevator function while the knob on top controls rudder. Throttle and collective comes through a rotary lever operated either by thumb or forefinger of the opposite hand. The TX is cradled in your left arm with the left thumb and fingers controlling switches/sliders/levers on the top and right side of the box. The right hand runs the stick and knob.

The Century VII was a solid helicopter radio for its day.

By changing out the 53 MHz TX module, you can easily convert it to 35 MHz, or 72 MHz. With the 35 or 72 MHz RF module the transmitter will operate as a PCM radio. It will need a PCM receiver.

Conversion to 2.4 GHz may be possible, check with Radio South.

I don't believe there is a way to switch it from PCM mode to PPM mode. As such, you cannot switch it to 2.4 GHz by simply sticking a 2.4 GHz module in it as these modules are dependent upon being able to see the PPM data, not PCM coded data.

You have an excellent find on your hands.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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03-24-2015 04:46 AM  4 years ago
JEEPWORLD2002/2

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Blue Bell, Pa

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I wonder if there is a way to modify the gimbal to have a ribg type axis which can move up down to the single stick for collective and maybe a left to right axis on top or turn left right for rudder then just fly electric so u can set a slider for throttle ?? Hum such a great cause maybe talk to the guys at jr America's for advice as far as retro fitting or possibly trading for a modded xg6/7 to single stick. Or a xg14 gimbal to retro fit the 7 to the new XG gimbal to give you 5 axis ?? Wow nostalgia good luck Trex600n,Trex500,MR25,MikadoLoGo5003d/KDE,Goblin 380XNova,CastleCreations,Ys,JR XG8,Tags Mini XBus Dmss//FAA# FA3NYC9TAP
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03-24-2015 06:09 AM  4 years ago
rcheli808

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Mililani,Hi-USA

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If I remember correctly, JR made an airplane and helicopter single stick radio. I believe you have the airplane version. I'll dig up my instruction booklet to make sure.
Nice find...

Tim
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03-24-2015 06:57 AM  4 years ago
rcheli808

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Mililani,Hi-USA

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Me again...found my booklet. Here's a picture of your version in the booklet and a picture of my old still working radio.

Tim

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03-24-2015 10:58 AM  4 years ago
Heli_Splatter

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USA

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Hey... guys thanks for all the replies. Keep in mind, the warrior has one arm. He lays his left hand over both sticks and controls throttle/ rudder with the palm of his hand.

I was not bagging on this GREAT radio. I just did not know if I could get the throttle / pitch mixing that I would need for inverted flight... wow we can fly the Youngblood radio, that could make us as good as him! (not) I managed to get three working receivers meant for this radio.

I have the user's manual that came with the radio... the guy was meticulous in keeping his things nice. This is wonderful technology for the day. Yes it is PCM modulated. Two of you have suggested Radio South, so I will get a hold of Tony. I have done business with him in the past. The warrior does not have a ham license, so changes will have to be made.

Still, it might be better to just purchase a more recent single stick radio... I am not into this for much at the moment.
I also have Futaba ham receivers and a module to trade if someone has something. I know this stuff is not worth much. It is cool. I know that I would have been drooling over this radio in the hobby store glass case and never afforded it.
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03-24-2015 01:02 PM  4 years ago
dkshema

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Cedar Rapids, IA

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There really is not an option of buying a more recent single stick transmitter these days. Your best bet is mod what you have. 72 MHz PCM is an excellent option. I have an RF module for a JR radio on channel 59 that you can have.-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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03-25-2015 02:34 PM  4 years ago
Four Stroker

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Atlanta

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Instead of a machinist, someone with a 3D printer could make the parts for a 4-axis stick.

Yet another idea: a handle on the end of the stick that pivots for pitch and rotates for rudder. Maybe 30 degrees forward would be zero pitch to fit your hand.

As Dave has pointed out, a single stick (3-axis) transmitter still requires two hands.
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03-25-2015 03:17 PM  4 years ago
Ace Dude

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USA

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The warrior does not have a ham license, so changes will have to be made.
My girlfriend got her technician license after only studying for one week. Perhaps amateur radio would open up another hobby as well.

You have several receivers as well too....

Just a thought.
  
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03-25-2015 06:20 PM  4 years ago
Heli_Splatter

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USA

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Got ahold of RadioSouth... I can stuff a 2.4ghz module in the radio and be flying... That is great, but there is still problem of mixing and high/low side of throttle for 3D.

It costs about $500 to have a current radio modded for single stick use. I will be looking at that option.

Yes, it is a great idea to get the Tech license. Never hurt anyone and it is not that difficult. I am sure not getting much use out of mine-yet.
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03-26-2015 01:22 AM  4 years ago
rcheli808

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Mililani,Hi-USA

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Check out Ron's Rc Helicopters, I think he may still has some Transmitter Modules and Receivers that work with the model you have and then you won't need a ham license.
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03-28-2015 06:50 AM  4 years ago
TMoore

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Cookeville, TN

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Airtronics has been doing SS 2.4ghz radios that have the collective either on a foot peddle or up and down on the single stick through a slider.Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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03-28-2015 06:51 PM  4 years ago
Four Stroker

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Atlanta

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So Terry;

Who should wounded warriors or their mentors or just one armed guys contact ?
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HomeRC & Power✈️Aircraft🚁HelicopterRadio - JR DMSS › JR Century 7 Single Stick Radio - Wounded Warrior
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