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HomeAircraftHelicopterRadio - Spektrum DSM › Question : Help-Radio Programming for 1st attempt IDLE Up flight
03-14-2010 03:20 AM  8 years agoPost 1
RobotronskiRR

rrNovice

Mississippi

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I am ready to try some inverted flight. Flying a Trex450 and am comfortable with fast forward, nose-in and figure-8s.

I have a JR8103 that has a Normal Stunt1 Stunt 2 capability

Since my pitch curve for normal flight only has about 4 degrees negative
pitch and a throttle curve that has zero RPM at low stick

What do I need to do?

Honestly, not interested in hard 3-d at the moment.

Want to work on inverted hovering, do a loop and a roll maybe.

I know I'll need about 10 to 11 degrees pos/neg pitch

Not sure about throttle curves mostly...and gyro gain ...

Have a Castle Creations Motor Controller

I'm a little worried that I'll flip the switch and the helicopter will fall out of the sky or go into some wild high speed piros !!!!

Any links to an already established thread would be fine as well...

Thanks to all in advance - Bruce

Take-Offs are Optional ; Landings are Mandatory!!!

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03-14-2010 06:17 PM  8 years agoPost 2
dkshema

rrMaster

Cedar Rapids, IA

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First plan would be to set up the heli for an overall pitch range of something like -11 / 0 / +11 degrees (linear pitch curve).

Second step would be Normal mode pitch curve of something on the order of -3 / +6 / +10.

An Idle UP 1 of about -6 / +6 / +10

And and Idle up 2 of -11 / 0 / + 11.

The radio can fill in the points in-between, and you can fine tune them later, if you want to.

----

Normal throttle curve could be something like 0, 70, 80, 90, 100.

Your idle up 1 could be +85 (or more) across the board.

Idle up 2 could be +100 across the board.

-----
Dave

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

Team Heliproz

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03-16-2010 04:46 AM  8 years agoPost 3
RobotronskiRR

rrNovice

Mississippi

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Thanks for the detailed reply.

I will try those numbers.

One other question though... Do the servo trims I have set for normal, carry over to Idle_1 and 2 on a JR 8103 TX???

Wind here has been abnormally high for 4 days. Could actually land my plane with no rollout on touchdown yesterday all day long.

Will program radio tonight and fly a few packs Tues. afternoon.

Thanks again for the help.

Take-Offs are Optional ; Landings are Mandatory!!!

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03-18-2010 04:10 AM  8 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

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Each flight mode stores its own trim settings. None carry over from one mode to the next, they are separate.

Make sure your RUDDER trim setting in ALL flight modes is set identical or your HH gyro will give you fits.

-----
Dave

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

Team Heliproz

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03-21-2010 02:45 AM  8 years agoPost 5
RobotronskiRR

rrNovice

Mississippi

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Thanks !!!!!
So today was the day. Light wind and a lot of courage. Practiced a lot of inverted bail outs from all angles on the sim just in case. Flew three full packs and all went well. I love the reliability of electric power to be honest. No problems or surprises when I went to Idle-Up from normal. Curves were real close just past mid-stick. I did a few loops and some terribly sloppy rolls but had all the negative thrust I needed while inverted. I love the sound the rotors make when you really get aggressive with the sticks.

Now all I need is a lot of practice, practice, practice...

You really helped me out!

Thanks again, Bruce

Take-Offs are Optional ; Landings are Mandatory!!!

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03-21-2010 04:47 AM  8 years agoPost 6
dkshema

rrMaster

Cedar Rapids, IA

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You're welcome. Enjoy.

-----
Dave

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

Team Heliproz

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04-03-2010 11:26 AM  8 years agoPost 7
ChrisMoore

rrApprentice

Bay Village, OH

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I have noticed that at higher headspeeds I need less trim than is required in normal...this might just be a fluke because I put in some trim when it was very windy and I do not know for sure that my heli needed it. Its simplest to trim it by adjusting the links...and its worth getting right.

Also, I recommend running the same pitch in all three curves. A fella at my field did this to me when I had training sticks on the Raptor50 I have been flying. It gets you used to flying with the -11/0/+11 pitch curve. Basically you spool up on the ground to just about hover then hit the Idle Up and get the headspeed higher...this means you are ALWAYS in ST-1/ST-2 when you fly which means you will never accidently flip over in normal mode and loose headspeed (and crash).

It also is a safety thing, so I am told, so you can pull the helicopter on the ground with a lot of negative pitch when your skids land.

Chris. AMA 497715 IRCHA 3351

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04-04-2010 02:51 AM  8 years agoPost 8
ZAC ATTACK

rrKey Veteran

Hamilton Ontario, CANADA

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You have to decide which position you prefer your hover at before you set-up your helicopter.Do you wanna hover at mid stick or3/4 stick? Do not set-up your normal mode to hover at mid-stick and your Idle UP's at 3/4 stick.Not a good plan. Good luck.

MAAC#77677 Medicated daily for your protection

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