rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 295 ONLINE 20 EVENTS SEARCH REGISTER  START HERE
 
1 page846 viewsPOST REPLY
Model Rectifier Corp . RCHover . RC-Direct

.
.
e-Zoom, Shogun, Dolphin > loss of signal, hitting the deck!!!!!
 
 
clicka
New Heliman
Location: cheshire england

hi, please help me. i have a zoom which has had many upgrades over the last two years im self taught and the only reason i crash at the mo is loss of signal when she is banked over on a turn. if arial is in plastic tube on right skid she looses signal on hard left turns. if its on left skid it falls out of sky on right turns!!! its not a glitch as only happens at range of 20 or so metres sometimes she kicks her tail as banked over but comes back into range and all is well. im using carbon blades is it possible they are cutting the signal out please help as im fast running out of money!!!!
06-19-2007 Over year old.
 
 
Jungle Bob
Senior Heliman
Location: Borneo, Malaysia

I suspect you have a break in or damaged ariel. Have you tried range testing on the ground? It sounds like a weak signal somewhere along the line so I would look carefully at you ariel, any breaks or nicks in the wire, then your receiver (crystal properly located and secure?) and finally, your transmitter. I am not an expert but these things would be how I tackle your problem. I know you said it wasn't a glitch but both my Shogun and Zap 400 (basically what you have there under different names) perform much better with PCM receivers (you don't say which type of receiver you have fitted but if it's PPM then consider a change) Good luck buddy
06-19-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

thanks for the reply, tried new reciever and crystal last year [yes its been falling out of the sky that long 4 times now] will look into getting a pcm if that will help [whats the difference?] have futaba ff6 and pulled apart to check ariel connection [fine].range check seems ok as cannot fly too far as you know they soon dissapear. problem only occurs when banked over as described so the blades are in the way of the ariel
06-19-2007 Over year old.
 
 
Rob_T
Elite Veteran
Location: Tualatin, OR - USA

For range checking you should check the range with the transmitter antenna collapsed. This greatly reduces the signal from your transmitter so it will show up radio problems more easily. You should be able to walk back from your heli about 30 paces and still have full control. (This is a ground test - you dont actually fly the heli!)

I'd also try using the original full length receiver antenna. If you route it from the receiver along one skid to the tail fin and back to the other skid that should use up the full length of the wire. I think that works better than any of the short antennas I've tried.


Rob
Eco8, Piccolo Fun, Shogun, HB Elite CP, Trex 450XL CDE, Swift
06-20-2007 Over year old.
 
 
puzzle
Senior Heliman
Location: Canada

Hi Rob

Just bought a used heli with a base loaded ant.
I would like to go back to full lenght, can you tell me the lenght for chanal # 52 or are they all the same.

also if full lenght is routed inside a fuselage can I expect reduction of signal at the RX.

JR 905S PCM

Thanks puzzle
06-20-2007 Over year old.
 
 
village_idiot
Senior Heliman
Location: Land of confusion

The short base loaded should be fine in a heli. If you put a full length receive antenna on there, you will have to do something with all the extra. If you let it flap, there is a possibility that it will get caught in the blades or tail. If you coil it up on the landing gear, you may have worse reception than the shorter base loaded antenna.

You should be able to get enough range that you can no longer tell which way your heli is pointed with the base loaded antenna. ANd it is much less likely to get caught in the blades.

I think the full antenna length is around 27-32 inches long. Far longer than you can easily deal with on most of the helis.
06-20-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

im using a gws 6 channel reciever [nano a really small one] lenght of antenna has not been changed at all just dont understand
06-20-2007 Over year old.
 
 
astroflyer
Senior Heliman
Location: Milford, Nova Scotia, Canada

Not familiar with 6 channel GWS receivers, but aren't they all pretty much park flyer stuff with limited range? you might well be simply be running out of range....??
06-20-2007 Over year old.
HOMEPAGE  
 
 
village_idiot
Senior Heliman
Location: Land of confusion

20 meters is not that far (60 feet). I'm using that same GWS receiver in the Shogun right now, but I haven't tried to fly far away at all (not a good enough pilot yet). Mine has a short base loaded antenna, and is JR shift. Im using my Futaba TX with a shift select modification. Now if anyone should be having problems, it should be me. I get a good range check with the TX antenna down though, so I don't forsee problems at longer ranges.

Check to make sure the crystal is tight in the socket, if it is loose and loses contact while flying I could see a crash happening. Maybe even try a new crystal, they can become damaged.

How close is your ESC to the receiver? Could this be causing your problems? Is the BEC big enough for the draw from the servos (you will want 2 amps at least).
06-20-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

hi idiot [if i can call you that ] thanks for help, ill try a new crystal as you suggest its not loose at all but has had a few impacts, im running a cc 25 and 400 dh [its awsome] esc is under heli and reciever up front off a 2200 mah lipo. is bec part of the esc? i know it runs the servos but im not that up on the electric side of it,btw had a cnc head arrive this am so want to sort problem out before fitting it. if its a range problem why does it only happen when banked over? as it will hover at that distance no prob STRANGE!!!
do you know if signal is weaker if it has to pass through the disc [carbon blades?] when its at 90 degrees to the ground on a turn
thanks clicka
06-21-2007 Over year old.
 
 
village_idiot
Senior Heliman
Location: Land of confusion

If it passes through the disc, then maybe somewhat weaker. But you are talking so much weaker that it shouldn't be happening! The other thing you might think about is just getting a new receiver, those GWS receivers are usually pretty cheap. If not an new one, then for piece of mind I think I would solder a new wire on your current receiver. I know there is a post over at RCGroups in the Radios forum that list common antenna receiver lengths, just about any wire that you have should do the job.

As far as the placement of your receiver and ESC, sounds like they are in the exact same spots as my receiver and ESC, so I don't think that is an issue.

It really sounds like some kind of fault with the receiver so you might be best off with a new/used working receiver. Know anyone that would let you borrow a receiver for trouble shooting? I'm over in the USA, so I can't help much in that area.
06-21-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

thanks for the tips idiot [that just does not sound right does it} i thought it may of been reciever last year so i got a new one but it was same make so maybe its a gws problem. ill try new reviever [ what type are you running] unfortunatly im the only person i know who flies helis [maybe its time to join a club] so no chance of a borrow but they are much cheaper than a repair job. so how long you been flying? 3d yet?
06-21-2007 Over year old.
 
 
village_idiot
Senior Heliman
Location: Land of confusion

I have that exact same GWS receiver and no problems with it. If you want to try a different brand, the Berg receivers seem to get a lot of recommendations, but I've never used them. All I have is one JR 610M, and few of the GWS Naro receivers (one 6 channel and a couple of 4 channel). They all seem to work about the same for me. But all mine are on 72Mhz, your's are what 35Mhz??? The different band could be why we are seeing a big difference.

As for how long I've been flying, it should be more like how long have I been crashing. It's hard to call what I do flying yet.
06-21-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

yes we are on 35mhz over here, going the local heli shop [well i say local 30 miles away] so ill pick up different reciever thanks for all your help and good luck with the crashing! when i finally get this sorted im going to take the heli by the horns, give it a good thrashing and try a loop as thats where im upto in the learning curve. ill be taking a bin bag of course!!!!!
06-22-2007 Over year old.
 
 
village_idiot
Senior Heliman
Location: Land of confusion

I've been told that flying over very tall grass can help prevent crash damage. Might be a suggestion for you...
06-22-2007 Over year old.
 
 
clicka
New Heliman
Location: cheshire england

good thinking, maybe i should wait until it snows before trying a loop
06-23-2007 Over year old.
 
 
1 page846 viewsPOST REPLY
HeliDirect . Heli Wholesaler . 3D Heli Depot

.
.
e-Zoom, Shogun, Dolphin > loss of signal, hitting the deck!!!!!
 PRINT TOPIC Advertisers 

Subscribe to This Topic

Sunday, November 23 - 10:26 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie