HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Nov 22, 2001, 05:53 PM
Lance Armstrong- 7 times!
flybike's Avatar
Madison, Wisconsin
Joined Sep 2001
1,335 Posts
reciever glitching- please help!

I am having problems with my plane losing contact. I have a GWS pico reciever and a Tower Hobbies transmitter. The following has happened twice- once in a Litestik and once in a TM. I suddenly lose directional control, the motor shuts down, and it free flights to the ground, damaging the plane. I had plenty of battery left. I know of no interference in my area. While it is on its way down, I can switch the transmitter on and off with no results. Once I walk over to the pile of pieces, I unplug and plug back in the battery on the plane, and everything works good. I have made sure to keep the antenna away from pushrods and full length, trailing out the back. I don't think the transmitter is the problem because it flies my slimer planes fine. Does anyone know how I can fix this?
Thanks, Hans
flybike is offline Find More Posts by flybike
Reply With Quote
Sign up now
to remove ads between posts
Old Nov 22, 2001, 06:18 PM
Registered User
Canada, NS, Lunenburg
Joined Oct 1999
3,866 Posts
At what distance from you does this happen? I believe the GWS Pico receiver has limited range under ideal conditions.

Have you tried a range check on the ground with transmitter antenna down and with motor running? How far away can you get before you lose contact?
DaveSawers is offline Find More Posts by DaveSawers
Reply With Quote
Old Nov 22, 2001, 06:28 PM
high-speed freak
opualuan's Avatar
San Jose, CA
Joined Sep 2001
3,863 Posts
I have a similar glitching prolem also mine twiches 10ft away with tx antenna down, ~60ft with antenna up... so you have the right-angle plugs or the ones coming straight up from the circuit board? is your rx antenna 19" or 39"? some people with 39" antennas cut them to 19" and the glitching went away...

I am going to contact horizon hobby and hopefully return mine for a new one... I have heard a lot of people on this board having problems with the gws rx, if you plug it in wrong gws4ceo said a capacitor can fry, and I've heard if you crash (large shake to the rx) the crystal can get damaged...

if your rx is completely cutting out it may be an esc bec cutout problem... try using a different esc if you can...
opualuan is offline Find More Posts by opualuan
Reply With Quote
Old Nov 22, 2001, 06:43 PM
Lance Armstrong- 7 times!
flybike's Avatar
Madison, Wisconsin
Joined Sep 2001
1,335 Posts
The problem occurs quite close- maybe 100 feet. I have the longer antenna, should I cut it down? The plugs are on the face of the board, not the end. I have a GWS 5 amp esc.
flybike is offline Find More Posts by flybike
Reply With Quote
Old Nov 22, 2001, 07:12 PM
high-speed freak
opualuan's Avatar
San Jose, CA
Joined Sep 2001
3,863 Posts
try clipping your antenna to 19" first, helped some people...
opualuan is offline Find More Posts by opualuan
Reply With Quote
Old Nov 22, 2001, 08:07 PM
Registered User
Singapore
Joined Nov 2001
802 Posts
I've similar glitches with my GWS rx too although not as bad. I'm using JR 3810 Tx and Rondo ESC. My pico rx comes with the plugs facing straight up. I do get glitches at about 100 ft away as I notice my pylon racer sometimes pitches up abruptly uncommanded. It's quite violent although I managed to keep it from crashing so far by flying higher. I think I'll try clipping the antannae to 19". Anyway my buddy has similar problem s well with his.
Joe Yap is offline Find More Posts by Joe Yap
Reply With Quote
Old Nov 23, 2001, 10:15 AM
Registered User
Northampton, UK
Joined Jan 2001
340 Posts
Flybike, what do you have in the plane in the way of servos, what is your motor and ESC, are you using BEC? Could the ESC be shutting down due to too much current draw? it seems odd that you have to unplug/ plug in the battery in the plane before you get the radio to respond again. I'd check that your motor current and servo current are within specs. If you are using a BEC try using a separate battery for the radio.

Hope you get it sorted before you kill the plane.

Brian
FlyinBrian is offline Find More Posts by FlyinBrian
Reply With Quote
Old Nov 23, 2001, 07:50 PM
Lance Armstrong- 7 times!
flybike's Avatar
Madison, Wisconsin
Joined Sep 2001
1,335 Posts
Brian, I am using a GWS "A" drive motor, GWS pico servos, GWS 5amp esc, and am using BEC. 7.2 volt 1200 mah lithium ion battery- flies the TM for an hour! Any other ideas? Thanks
flybike is offline Find More Posts by flybike
Reply With Quote
Old Nov 25, 2001, 02:35 PM
Senior Member ??
ETKing's Avatar
Southern California, USA
Joined Sep 2001
388 Posts
Hans;

It's your battery.

Do a search in slowfliers on lithium.

Basically you are pulling more current than the battery protection circuit will allow. Get another battery (300 mah NiMH), reduce prop size, or bypass the protection.

I use that battery on a litestik, but without the protection circuit. Read the cautions before modifying the battery.

Good Luck!
ETKing is offline Find More Posts by ETKing
Reply With Quote
Old Nov 25, 2001, 03:38 PM
hem.bredband.net/b254298
Nicke's Avatar
Sweden, sthlm
Joined Nov 2001
325 Posts
I have had that problem too. Used the gws4p on my picostick, and at 100-150 feet, the motor cut off, but never lost control completely, so it could still be whole (hadn't it been because the bamboo wing sticks broke... )

Well, back to topic... When i use gws4n, the range is just fine, no glitching or motor cutoff. So i wouldn't say it's the esc, it's probably the reciever.

Anyway, i bought a new transmitter, a cocpit mm, to replace my really old focus 6, and now range has increased a lot, maybe 400 feet before glitches and motor cutoff. So could be the transmitter too.
Nicke is offline Find More Posts by Nicke
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
UBEC vs SBEC vs Seperate Reciever Pack... Please help me decide jbj620 Power Systems 31 Nov 15, 2004 02:04 AM
Putting a new reciever in TM problem...please help! cincyfler Parkflyers 5 Aug 12, 2002 07:58 PM
Please help w/ glitching rx DennisG Electric Plane Talk 5 Aug 06, 2002 05:37 AM
PLEASE help. Glitching planecrash Electric Plane Talk 33 Apr 03, 2002 08:43 PM
My reciever is glitching!!!!!! help JStory Electric Plane Talk 1 Jan 08, 2002 01:38 AM