Having trouble setting up the flaps on the X9303  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> JR Radio & Spektrum Radios Support Forum >> Having trouble setting up the flaps on the X9303
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Having trouble setting up the flaps on the X9303 - 3/18/2008 6:41:41 PM   
Birman


 

Posts: 422
Joined: 9/3/2006
From: Racine, WI, USA
Status: offline 		I can't seem to get the flaps to operate properly on my X9303. I have them set to NORM U100%, MID D25% and LAND D85%. When I put the flap switch to the MID position, the flaps drop down way more than 25%. I would guess that they drop down about 50 or 60%. When I set the switch to full DOWN, they seem to go down the correct amount (the 85% that I set them to).

Just for fun I set the MID position setting to 0% and the flaps appeared to drop down about 20 or 30%.

I'm not using AUTO LAND for flight modes.

I have the servo just sitting on the work bench observing the movement of the arm. I wanted to check it out before I installed it in the wing. I did try other servos with the same results.

What am I doing wrong?

Birman

< Message edited by Birman -- 3/19/2008 1:22:14 PM >

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       Post #: 1

RE: Having trouble setting up the flaps on the X9303 - 3/18/2008 8:20:18 PM   
danfield4


 

Posts: 8
Joined: 9/29/2004
From: , CA, USA
Status: offline 		I had to look,,, oh power. I had to switch over to ACRO to see what is going on. So, you are using the Left 3W only to control flaps. I do Gliders but.... I would give this a go.

I don't know if this is 2 or 4 servo wing, Ailerons as Flaperons or Ail & Flaps.

Depends how when you built the model what you did for any offset of the Servo and or including Servo Arm offset and the linkage. With a 4 servo wing Glider, it is normal to Offset the servo subtrim away from the direction needed to lower flaps ( might be Top Drive or Bottom ) so you have more servo rotation in the down flap direction, saving a bit of the other direction for reflex and any ail/flap mix. There are pictures in the manual for Offset for both Ailerons and Flaps systems.

Flaperons Only, you may not Offset as much so it works for Ail UP as well. You will have to decide what you want to have happen.

Either way. I would consider the NORM position to be In Section, surface as the airfoil was designed - unless you run some reflex. :-)

I assume you set up the arms and the servo subtrim equal ( could be offset from zero but equal, then you adjusted the linkage so surface is in section.

You didn't say what Norm U100% did, but I would imagine they went up a lot. So on any of the 3 pos you don't have a normal flight mode. So what do want it do? 3 pos, say Norm, Some Camber, and 85% down for landing?

1. Check the Subtrims, Arms at the same start point. Both straight, layed forward or back , what ever you want or need, just equal.
2. Zero out on the Norm, Mid and land you already have.
3. Check the Flap and Flaperon Trim Switches and make sure they are equal, should be zero for now. The two switches on the top face.
4. Adjust linkage as needed first, get as close as you can so you use a bit of Subtrim to be perfect.
Some use the Subtrim to correct a bad install. That's sort of OK, but it will present problems with Diff and other items later as the Arms are on a different Starting point and the Arc will be different.

Now go back to your Flap Sys - Norm should be zero I would think.

5.Mid is some Camber, so put the Switch in the Mid pos first, then adjust the percent to where you want the flap to actually be. Just entering a percent won't work here, different arm lengths at either end and such, 20% for one plane might be 40% for another.

6. Land - same deal, but you must have the switch in Land to SEE the change as you make a percentage change, adjust to where you want it.

You could also turn on the side sliders for variable flaps as well. I assume you need the Spoiler stick for Throttle.

Dan

(in reply to Birman)
       Post #: 2

RE: Having trouble setting up the flaps on the X9303 - 3/25/2008 4:29:30 PM   
Bob Powers


 

Posts: 1
Joined: 2/27/2008
From: San Antonio, TX, USA
Status: offline 		Hi Dan. Bob P here. I'm flying a 3 meter electric sailplane and I'd like to have the flaps on the left slider with some down elevator compensation varying with the amount I put the flaps down. I currently have the flaps programed to fixed positions on the upper left 3 position switch. After flying the plane I realised that having to compensate trim by pushing the stick forward is NO FUN.

By the way the plane is an Art Hobby 3 meter with an AXI 2810 and a 4400mah LiPo

Thanks for your help.
P.S. I like this radio a lot, but it's tough getting the answers out of the manuals and Horizon Hobby articles. I must be computer impaired

(in reply to danfield4)
       Post #: 3

RE: Having trouble setting up the flaps on the X9303 - 3/25/2008 6:06:21 PM   
danfield4


 

Posts: 8
Joined: 9/29/2004
From: , CA, USA
Status: offline 		Hey Bob

Sorry, I don't do electrics, well I do have a couple but not that familiar with it. I don't even know without looking as to how to turn on the sliders. I don't like em as I never got used to using them, but then I get to use the Throttle/spoiler stick for variable camber no elev comp and Butterfly with elev comp.

So you need to know how to turn on your sliders but it sounds like you already have that going. Then I would guess you could use Elev/flap mix and assign it to your slider, you have to fly and adjust the elev comp as needed.

Plan B - Turn off, hold the ENT button as you turn on. Go to Device Select. Look in the lower left corner, "Trim" choices are either COM or FM. If in COM ( common ) all your trims , elev, rud, ail are equal in any of the 3W switch pos, change a trim and it will be the same in any flight mode. In "FM" mode, you get to have any trim you want in all 5 flight modes. You must be careful and on the Ground, switch through all 5 flight modes to make sure you don't have something like say a bunch of Down Elev or something that would crash your model.

Once there, you could say flip the left 3 way to your first camber and while flying trim your Elev for level flight, Switch to your next Camber and trim the elev and so on. Now any time you switch the elev with be level or climb or what ever you wanted. You should be able to get close enough so holding the elev won't be annoyingly too much.

Only problem with this method is the Elev comp will only be correct when flying at the same speed you set it at, where as if you find the magic way to attach elev comp to the slider, it should be variable. Here you would set up the comp at max slider/flap and when say in the middle of the slider it should be near half the elev comp.

Dan



(in reply to Bob Powers)
       Post #: 4

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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> JR Radio & Spektrum Radios Support Forum >> Having trouble setting up the flaps on the X9303
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