Help my new 37% Carden fails range test  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> Carden Aircraft >> Help my new 37% Carden fails range test
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Help my new 37% Carden fails range test - 9/14/2006 4:35:23 AM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		I bought a fairly new Carden Yak 37%. I put my JR recievers in the plane and it has failed a range test. The elevators for instance do not go up and down together when you get about 50ft away from the plane. They get out of time with eachother. I changed the recievers and it still has the problem.
There are 4 8611As on the elevators. They do not have matchboxes as that is how they were initially set up when the plane was first built.
Any ideas would be helpful. I am running 2 JR S945R recievers. I also tried a couple r770 recievers to see if the recievers were the problem.
Thanks
Darren
Bonney Lake WA
       Post #: 1

RE: Help my new 37% Carden fails range test - 9/14/2006 2:45:33 PM   
ben beyer



Posts: 2339
Joined: 11/23/2002
From: College Station, TX, USA
Status: offline 		Are you using any kind of Powerbox or Power Expander type system with the radio?

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RE: Help my new 37% Carden fails range test - 9/14/2006 2:52:44 PM   
BBW Walt



Posts: 929
Joined: 1/13/2002
From: NWest, IN, USA
Status: offline 		Had a similar major situation with a big Ultimate", tried everything, took a year to eventually get a satificatory range check. Ended up going with one 945 receiver, through a power box and the problem was gone, plane fly's awesome. Your plane does not need 4 elevator servo's. I would eliminate 2 to simplify things. You might consider hooking up everything with one receiver for test check to see if it improves and go from there. These range demons are sometimes hard to find but in our case removing all the complexity straightened our problem out. Hope this helps, Walt

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       Post #: 3

RE: Help my new 37% Carden fails range test - 9/14/2006 9:08:59 PM   
Ricmussman


 

Posts: 244
Joined: 12/14/2001
From: Hamilton, OH, USA
Status: offline 		I had a similar problem and it turned out to be one of my extension cables had a little corosion on the terminal. I replaced the bad end with a new one and yoila all was good. The point is check your extensions for bad signal transfer, if one had more resistance than another it will change the output speed.

Ric

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       Post #: 4

RE: Help my new 37% Carden fails range test - 9/14/2006 9:40:30 PM   
as722


 

Posts: 963
Joined: 12/26/2002
From: MT Pocono, PA, ANGOLA
Status: offline 		Had a very similar problem that turned out to be a bad smart fly ignition kill device.

Albert

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       Post #: 5

RE: Help my new 37% Carden fails range test - 9/14/2006 10:00:04 PM   
cbk07


 

Posts: 537
Joined: 12/30/2001
From: farmington, CT, USA
Status: offline 		Darren, a few guys up here have had this same problem. Two of them went to one receiver and the problem was solved. The other finally gave up and sent his equipment back to JR and found his Tx module was out of tune.

Another thing....tape your crystals in. JR cost me a 40% plane this year when a crystal fell out. I thought it was an isolated incident until everybody and their brother told me they always fall out if you don't tape them in. Good luck solving it!

Craig

(in reply to as722)
       Post #: 6

RE: Help my new 37% Carden fails range test - 9/15/2006 12:18:01 AM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		Hi Ben,
No power expander that I know of. In fact the plane only has one matchbox and that is for the 4 servo rudder.

(in reply to ben beyer)
       Post #: 7

RE: Help my new 37% Carden fails range test - 9/15/2006 12:22:20 AM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		Walt,
You just gave me a great idea that might help me narrow this down. Maybe I dont need 4 servos for the elevators especially with giant ballancers. But if I do go with them at least I can try disconnectin a couple to see what happens. Maybe that will help to isolate where the problem is.
This plane can be seen here. http://www.aeroprotect.com/Workbench/Yak54/Index.html Maybe you could take a look to verify that I dont need so many servos.
Thanks
Darren

(in reply to BBW Walt)
       Post #: 8

RE: Help my new 37% Carden fails range test - 9/15/2006 12:27:51 AM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		Thanks everyone for all the advice. I will be going home soon to work on the plane and it sure helps to here from some experienced experts and especially what you said Craig regarding taping in the crystals. I will definitaly be doing that for sure. Lots of money on the line here.
Thanks again
Darren
Anymore advice will be appreciated. I will update everyone on this post. Hope to fly the plane in IMAC this weekend at Richland WA

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       Post #: 9

RE: Help my new 37% Carden fails range test - 9/15/2006 2:16:20 AM   
quist



Posts: 1606
Joined: 1/8/2002
From: Glendale, AZ, USA
Status: offline 		Do a range check with only one rx powered up. It would also help to have detailed pictures of the interior.

Was this range check with the engine running or not? What mufflers are on the plane? Make sure all servo extension are plugged in tight. Where are the antenna's mounted?

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       Post #: 10

RE: Help my new 37% Carden fails range test - 9/15/2006 3:10:50 AM   
ben beyer



Posts: 2339
Joined: 11/23/2002
From: College Station, TX, USA
Status: offline 		I read where one guy built a 150cc class plane and put the 14MZ in it. He had range check problems and then they all went away when he installed a Smart Fly Power Expander. I'm using one on my 35% Extra 260 that i'm going to build. Matchboxes are just a method so that the servos don't fight each other.

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RE: Help my new 37% Carden fails range test - 9/15/2006 7:56:18 AM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		Thanks everyone for the advice. I believe the problem is solved. I put the 2 Futaba recievers that came with the plane back in and borrowed my friends 9cap. Everything is much better. No more troubles that we can see running or not.
Before this, I had tried 2 sets of JR recievers so if all goes well at the field I will know almost for sure my 9303 is a bit out of tune. I will send it in.
I had to do my latest range testing at my house. I will make sure I do a good range test again at the field tomorrow.
I will be flying the plane at Imac on Saturday and Sunday. This will be my fourth time flying sportsman. Still very green. Hope to do well with this plane. Maybe it will fly it for me?
Thanks again. Everything everyone wrote was very helpful!
Darren

(in reply to ben beyer)
       Post #: 12

RE: Help my new 37% Carden fails range test - 9/15/2006 2:56:49 PM   
ben beyer



Posts: 2339
Joined: 11/23/2002
From: College Station, TX, USA
Status: offline 		Cool! Good luck.

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RE: Help my new 37% Carden fails range test - 9/15/2006 11:07:20 PM   
quist



Posts: 1606
Joined: 1/8/2002
From: Glendale, AZ, USA
Status: offline 		You dont have to send the radio in, just the module.

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       Post #: 14

RE: Help my new 37% Carden fails range test - 9/18/2006 5:20:36 PM   
dqman40rock


 

Posts: 13
Joined: 2/22/2005
From: BONNEY LAKE , WA, USA
Status: offline 		The Carden flew like a Carden. I took it to the IMAC at Richland WA. After we worked on the plane I had enough time to fly it once before competition. Very windy for a first flight with a Carden but all went well. I got better scores then ever. (the Carden did it) Second out of 4 people. That was my fourth time flying sportsman so I was happy with that.
Small turn out but we had a great time. It still does the out of time thing but not as bad. Some of the other Carden guys rewired parts in the plane to isolate the ignition wires from the battery to reciever wires.
We checked another Carden to see if it would do the same thing. A new extra with the same servos. It did the same thing.
I have a smart fly power expander. I will try it and see if it takes away the problem. If not I am sure it will be fine because you do not normaly operate your elevators continuously up and down during flight. Even in 3D it would be a strange thing to go up and down, top to bottom with the elevators. That is the only time it got out of cync. There are no glitches.
I will post again after I try my power expander.
Thanks
Darren

(in reply to quist)
       Post #: 15

RE: Help my new 37% Carden fails range test - 10/4/2006 1:34:04 PM   
Flyfalcons



Posts: 6100
Joined: 7/27/2002
From: Bonney Lake, WA, USA
Status: offline