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jr 622 radio

Old 03-18-2006, 12:07 AM
  #1  
timothy thompson
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Default jr 622 radio

i fly my rex with that radio it has a 3 point throttle curve set at 0 50 100 my pitch curve is set at 25 65 100 I do not want 3-d flight just a nice stable heli. pitch gauge tells me im ok but every flight is different some very stable some not. i do not want so much pitch that a slow down my head speed she tachs at 2200 with optical tach. anyone else use a 3 point and if so what are your values

tim
Old 03-18-2006, 11:13 AM
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RCS FOR ME
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Default RE: jr 622 radio

This is the charts I use off Trex tuning.com . Hope it helps.

5 Pitch Curve Depending on how many points are available on the curves in your transmitter, set the pitch curve percentages as follows:
Number of Points available on Transmitter Low Mid High
3-Point Curve 50 83 100
5-Point Curve 50 69 83 93 100
7-Point Curve 50 63 73 83 90 95 100
13-point Curve 50 57 63 69 73 78 83 86 90 93 95 98 100


6 Throttle Curve Depending on how many points are available on the curves in your transmitter, set the throttle curve percentages as follows:
Number of Points Low Mid High
3-Point Curve 0 65 100
5-Point Curve 0 30 65 85 100
7-Point Curve 0 20 41 65 80 90 100
13-point Curve 0 10 20 30 41 53 65 73 80 85 90 95 100


Old 03-18-2006, 11:35 AM
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timothy thompson
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Default RE: jr 622 radio

wow thanks i go there all the time but never found 3 pt values
Old 03-18-2006, 07:51 PM
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Default RE: jr 622 radio

tried those settings and the rex would not fly went back to a pitch surve of 0 50 100 and throttle o 50 100 linear and she does ok. what am i doing wrong
Old 03-19-2006, 05:26 AM
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Airotica
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Default RE: jr 622 radio

I have the same radio, well a JR Max 66 anyway and a 450SE V1

Are you sure you haven't got too much positive pitch and too low revs? Mine doesn't handle well like this. Feels sloppy and hard to correct. Does it start to hover before half throttle?

I see no reason to have 100 at the top of the any of the curves when learning. I think I had mine at something like 40 60 80 on the pitch and 0 70 80 on the throttle.

Each click of the throttle stick while trying to hover scared me before that because I was moving the pitch a great deal with each movement. You might want to try moving the pitch endpoint down without touching the throttle settings. Maybe try 90% first? (0 50 90)

Also I noticed it was harder to keep straight if the revs are going up and down all the time with the throtle movement. The torque reaction from speeding up or slowing down the main blades wants to turn the chopper one way or the other. It's much better to have the middle and end point on the throttle reasonably close together for learning in my opinion so only the pitch changes not the revs.
I found it handled much better if the head speed was around 2500. It sounded scarier but was easier to hover

Make sure you're not using the stunt position on the radio because on mine you can only have 100% on the end of the throttle curve. You can only change the first 2 points when in stunt mode.

Once I ventured outside of my workshop and started throwing the chopper around I found I didn't have enough pitch to catch it when doing silly things so bumped up the pitch curve to 40 70 100 and throttle to 0 80 90.

So basically what I'm saying, try leaving all the 0 points the same but bring down the middle points a little and the end points a little more.

You might want to try some exponential on the aileron and elevator. This calmed mine down for easier hovering but I could still catch it.
Old 03-19-2006, 01:27 PM
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timothy thompson
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Default RE: jr 622 radio

im not in stunt mode when i set the trottle curve out of being liear the esc wont arm. align 35 amp. i will try 90 on the top of the pitch curve. if i move bottom end pich curve from 0 to 10 i see a lot of collective movement . it brings the pitch so high the heli bogs down. when it is in the air all controls work properly very crisp and not sloppy its just getting the right curves. this is my first electric heli that i had to set up. i have an electron 6 rx with hitec servos h 56s
Old 03-19-2006, 02:09 PM
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Default RE: jr 622 radio

well here are my latest curves it flies a lot nicer this way! any further help appreciated i can play with these all day and not get them correct. at these settings she actually can be nhovered in my garage and fly around a bit under full control too windy outside. my batts seem to last longer two! thunder power 2100 mah 3 cell lipo


thr 0 40 100

pitch 10 50 90
Old 03-19-2006, 04:59 PM
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timothy thompson
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Default RE: jr 622 radio

how long should i be able to fly on a fully charged pack?? BTW i bought the new we flite p-47 uses the same pack with a outrunner moter it is awesome. what is the relationship between throttle curve and pitch?? i can fly these thing but im determined to learn how to do a proper setup
Old 03-20-2006, 11:42 AM
  #9  
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Default RE: jr 622 radio

what pinion are you using im using the 15 would i do better going with a 13 that came with the heli??

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