| |
| |||||||
 |
| | LinkBack | Thread Tools | Display Modes |
09-12-2010, 04:07 PM
| #1 |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
|  ~hs7980=glitching..BAD!~
just installed a hs7980 on my 2.2 comp rig...now I got some major gliching..it ran fine for 1 pack then half way through the 2nd pack it started twicthing and gliching pretty bad then it would shut down and not steer at all...I thought maybe it was getting hot, but after checking the servo it was barely even warm  system specs... 4pk Brxl esc x2 CC BEC@7.4v hs7980 the servo is powered stright(hardwired) off the BEC the only other thing I have changed was I stuffed the RX antena inside the futaba rx case...maybe it's got some weird interference?? thoughts??? |
|  |
| Sponsored Links | |
| | |
|
09-12-2010, 04:48 PM
| #2 |
| Hateraide   Join Date: Dec 2008 Location: Mission BC
Posts: 1,538
|
sounds possible maybe move it farther away if not did u change any settings on your remote how are the remote batteries things like that?
|
|
| |
|
09-12-2010, 04:51 PM
| #3 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
Posts: 6,116
|
Mine was having similiar problems, and it was a bad amplifier, check it on another car, if it still does it send it into hitec they have warrantied my 7955 twice both from burnt amplifiers, my warranty is up so i'm going to be buying a new 600+oz servo here soon once the 55 burns up again, lol
|
|
| |
|
09-12-2010, 06:18 PM
| #4 | ||
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
| Quote:
4pk just came off a fresh overnight charge 4pk volts @6.8v I did have the rig apart for some rebuilding....maybe I got some setting's in the tx screwed up some how?? I know I did have the esc's in the wrong channels at first....then when I relized I did not have rear dig I swapped them back... Quote:
| ||
|
| |
|
09-12-2010, 07:00 PM
| #5 |
| Quarry Creeper Join Date: Jan 2010 Location: Dearborn Hts
Posts: 211
|
I used mine for the first time today and it was GREAT, however I'm running my BEC at 6 volts. Now a question, do you need to program the servo to use it at 7.4 volts, and did you program yours? Maybe running the BEC at 7 and not programming the servo causes the glitching? |
|
| |
|
09-12-2010, 07:45 PM
| #6 | |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
Posts: 6,116
| Quote:
But yea hitec should warranty it, they have mine twice and it was having similiar problems just one day it started jittering/glitching really bad (day of the comp), i made it through a whole comp with it though | |
|
| |
|
09-12-2010, 07:53 PM
| #7 | |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
| Quote:
  pretty sure you dont need to program the servo it's self...? I have never programmed my other hitec servo's for higher voltage..? | |
|
| |
|
09-12-2010, 09:37 PM
| #8 | |
| Quarry Creeper Join Date: Jan 2010 Location: Dearborn Hts
Posts: 211
| Quote:
Guess I can't help ya... | |
|
| |
|
09-13-2010, 10:39 AM
| #9 |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
| Updated with a bit of tech....
so I made some calls...hitec and castle.. hitec was telling me the 7980 is a AMP HOG!! they are suspecting that with my 4s lipos and cc bec that i'm simply just not giving the servo enough amps to run properly..they highly suggested that I run a straight 2s lipo for the servo only..being a crawler and already tight on space I did not really see this happening. so I called CC to ask them what kinda amps the smaller bec would put out on 4s lipos...it's only about 6 amps on a 4s lipo NOT even close to the 10 amps that hitec suggests.. I inquired about the CC bec PRO..and they said it would work fine...but they suggested that I just run a servo extension and solder the extension on my lipos...since I run 2x 2s lipos CC says I could run the servo off one side of the lipo and should be golden...AND it will be much cheaper and cleaner then having a BEC  so I'm off to the LHS to get a few servo extensions so I can power my 7980 on a full 2s I will keep this thread updated as I find out if this works or not.. |
|
| |
|
09-13-2010, 10:50 AM
| #10 |
| Rock Crawler Join Date: Oct 2009 Location: SO CAL
Posts: 598
|
sounds like the battery direct is the way to go if you're only running 2s packs. how come you're running 2 2s packs? to achieve 4s voltage or what? |
|
| |
|
09-13-2010, 10:51 AM
| #11 | |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
| Quote:
| |
|
| |
|
09-13-2010, 10:59 AM
| #12 |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
|
to add a bit... the reason I'm thinking most guys have not seen the same issues is that with 3s lipos(less volts) you can get more amp's out of the cc bec..the higher the volts through the bec...the lower the amps.. |
|
| |
|
09-13-2010, 03:08 PM
| #13 |
| Quarry Creeper Join Date: Jan 2010 Location: Dearborn Hts
Posts: 211
|
Another reason to run it with the BEC set to 6v, less power needed, hell it's still got 500 oz @ 6v  |
|
| |
|
09-13-2010, 04:11 PM
| #14 | |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
| Quote:
| |
|
| |
|
09-15-2010, 08:23 PM
| #15 |
| I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
|
Well I hard wired a 2s lipo to the 7980...still glitching like a mofo... Hitec is gonna send me a new one/replacement.. |
|
| |
|
| |
Linear Mode
