JR-9303 2.4 Field Results

[ec121]

I have been electronics since vacuum tubes, core memory, and punched tape loader radar systems. Am I giving my age away ;-). However,I'm no RF wavelength expert, but thinking about the plane coming at you with the motor blocking the Rx plus a carbon fiber prop creating a big 2.4 diffusion disc in front of the motor could be a worst case situation for a hold. Also a while back I read about a fellow who put some of those metal flake stickers on the side of his plane and his Spektrum had problems. Might an urban legend sort of thing but that is how radar chaff works.

[grayuk]

	Quote: Originally Posted by GooseF22
	We had a Fasst system go in when it was hit by a video system, and we saw one glitch, when the ground plane was too close to a satellite receiver, but that was fixed. folks pay attention to where your sattelite antenna leads are run, and try to isolate them from servo wires or ignition wires. There is some discussion if that is possible to cause issues in the input side versus the output side. not sure at this point. g

FASST does not have satellite recievers, or am i not understanding you?
Paul

[JohnVH]

	Quote: Originally Posted by Propstriker
	Ok, Lost my 35% 260 on its 3rd flight with the X9303 Spectrum system. This plane has been Flawless for 3 seasons and over 800 flights!! Tossed and Turned all night about this...If the plane had gone in because it was my fault I would be OK. All range checks and Data Log Numbers were excellent.....The plane trimmed well and I was just starting to get comfortable with the Radio when I decided to Land at the end of the 3rd flight and it was pointed directly at me about 200 feet away, about 20 feet off the ground....NO RUDDER was the first sign I didn't have any control. It went in and just before impact I heard the engine throttle up. All my other electric models are flying fine...so Now what do you do when You don't trust your NEW Equipment? I will be talking to Horizon This morning....other than that, I surely dont want to lose My Comp Arf Extra. Not sure what to do at this point.................

What was the verdict?

[Javier Marquez]

Has anybody had any problem with getting noise into the rx due to gas ignition system? I have a buddy here in Mexico who just switched to a 9303 on 2.4 on his H9 Edge 540 and everything works great until he fires up the engine and all goes haywire. He's going nuts trying to figure out what to do. Any help will be appreciated.

[agshane]

Absolutely! I lost a 25% YAK with an SPE 26CC with CDI because I had two receiver switches and the ignition switch (battery) next to each other! Strange however, only the elevator (both servos) only glitched when the engine was at 2500 rpm or less.

Anyway, once the components were separated by moving the ignition battery as far forward as possible, along with the battery everything settled down.

Happy Landings!

[JohnVH]

	Quote: Originally Posted by agshane
	Absolutely! I lost a 25% YAK with an SPE 26CC with CDI because I had two receiver switches and the ignition switch (battery) next to each other! Strange however, only the elevator (both servos) only glitched when the engine was at 2500 rpm or less. Anyway, once the components were separated by moving the ignition battery as far forward as possible, along with the battery everything settled down. Happy Landings!

what servo's were you using?

[agshane]

I was using JR821's. Hope that help's!

Happy Landings!

[JohnVH]

thats odd, of the 3 2.4 setups I run, the only one I had a glitch in was a hitec servo equipped airplane.. I have since taken out all the hitecs and replaced with better name servo's.

[agshane]

	Quote: Originally Posted by JohnVH
	thats odd, of the 3 2.4 setups I run, the only one I had a glitch in was a hitec servo equipped airplane.. I have since taken out all the hitecs and replaced with better name servo's.

What's the point? You solved the problem by installing different servos? Actually I was incorrect, I do have an JR821 on the throttle and the remainder are Hitec 475's. The bottom line, CDI and any part of the igintion system, if located to close to other servos or receiver wiring, may cause problems.

[GooseF22]

	Quote: Originally Posted by Javier Marquez
	Has anybody had any problem with getting noise into the rx due to gas ignition system? I have a buddy here in Mexico who just switched to a 9303 on 2.4 on his H9 Edge 540 and everything works great until he fires up the engine and all goes haywire. He's going nuts trying to figure out what to do. Any help will be appreciated.

two things.
change the spark plug, check the ignition module and wires for breaks or for where it may touch something. Make sure you do not have metal to metal all the way from the servo to the motor on the throttle. Move the receivers to the rear of the plane away from the motor area.


make sure the radio wires are isolated from the ignition, especially the receiver wires from the satellite receiver. You are getting high energy from somewhere.

A simple test will see. Power the ignition with a separate battery and disconnect the throttle servo, and get a servo driver. If you stll get noise, it is an ignition issue.

I have seen many issues resolved with a new resistor spark plug

[The Dirt Doctor]

	Quote: Originally Posted by GooseF22
	If you still like that radio you can buy the module and transition slowly by buying receivers, and when you finally decide to get 9x or 12x JR, you wont have anything else to buy. then sell the 9C with the module or give it to your wife to support your habit....you know kinda like the shotgun thing.....

GooseF22, I plan on converting a couple of my planes to 2.4 when my 12X finally arrives. I have a plane where I use 9 channels (4 ail, 2 elev, 1 rud, 1 thro and 1 kill switch). Will I be able to convert directly from the current JR 2100 to the JR 921? My main plane with use the 1221 that comes with the 12X.

Bobby aka TDD

[GooseF22]

	Quote: Originally Posted by The Dirt Doctor
	GooseF22, I plan on converting a couple of my planes to 2.4 when my 12X finally arrives. I have a plane where I use 9 channels (4 ail, 2 elev, 1 rud, 1 thro and 1 kill switch). Will I be able to convert directly from the current JR 2100 to the JR 921? My main plane with use the 1221 that comes with the 12X. Bobby aka TDD

it will take a different mix and servo port selection. do it from scratch.

[The Dirt Doctor]

	Quote: Originally Posted by GooseF22
	it will take a different mix and servo port selection. do it from scratch.

Thanks.

Bobby

[GooseF22]

its because the switches are different. the mixes will be more like a 9303. most of the mixing is done in the setup menu. You may or may not change channels depending on where you want things. Not all switches can activavte all channels, but its pretty good.

[backroadrider69]

	Quote: Originally Posted by JohnVH
	thats odd, of the 3 2.4 setups I run, the only one I had a glitch in was a hitec servo equipped airplane.. I have since taken out all the hitecs and replaced with better name servo's.

John...ouch, that hurts!!!

I have used a JR 9303 2.4 since October in 4 planes all using Hitec 5955TG servos and have NOT had a glitch on any of them!

CARF 3.3 Yak - 3W200TSCS - Seiko rudder servo, 10 5955's, 1 5245 throttle, Powerbox, JR921 with 2 remotes on 36" leads mounted in rear of fuse.

CARF 3.0 Yak - DA 150 - 4 JR 8711's (2 rudder & 2 elevator), 4 5955's on ailerons, 1 5245 throttle, Powerbox, JR921 with 2 remotes on 36" leads mounted in rear of fuse. ONE OF THE REMOTES CAME OFF OF THE FUSE AND THE LEAD WRAPPED AROUND THE RUDDER CABLES ABOUT 5 TIMES AND I HAD NO GLITCHES AT ALL EVEN THOUGH I HAD 900 FADES ON ONE ANTENNA AND OVER 500 ON THE REST WITH ONLY A FEW FRAME LOSSES AND NO HOLDS!!

CARF 2.6 Yak - DA 100 - 8 5955's, 1 5245, Powerbox, AR7000 with 1 remote on 36" lead mounted in rear of fuse.

AM 33% Yak - BME 110 - 8 5955's, 1 5245, Smart Fly Power Expander, AR7000 with 1 remote on 36" lead mounted in rear of fuse.

Hope this helps!

Butch