| |
03-23-2010, 11:41 AM
| #1 |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
|  hitec 7950
I have a hitec 7950 i bought new for my losi im runnin a cc bec at 7.4 and im have issues with the servo tweaking out when climbing or when the front wheels are up to a rock it starts twitching. I just ordered a servo programmer Im hoping i can get it fixed before my first comp any ideas would be great thanks
|
|  |
| Sponsored Links | |
| | |
|
03-23-2010, 12:02 PM
| #2 |
| Rock Crawler Join Date: May 2008 Location: Sumter, SC
Posts: 619
|
What radio system do you have? Does it have frame rate settings?
|
|
| |
|
03-23-2010, 01:12 PM
| #3 | |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
| Quote:
| |
|
| |
|
03-23-2010, 01:36 PM
| #4 |
| Rock Stacker Join Date: Jan 2010 Location: Vacaville
Posts: 80
| curious
Im curious same thing. I have a DX3R and the frame rate is set for digital but servo is still extremely "noisy". If the programmer actually helps I would be willing to invest in one as well...
|
|
| |
|
03-25-2010, 09:25 AM
| #5 |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
|
Well I unhooked my bec and now I have no twitching. Could there be something wrong with my bec? I have the volts set to 7.4v but the servo should be able to handle that I guess im going to run it like this for now. 347oz tq should be good till I figure something out
|
|
| |
|
03-25-2010, 09:27 AM
| #6 |
| Rock Crawler Join Date: Jun 2007 Location: Arlington
Posts: 684
|
What battery are you running?
|
|
| |
|
03-25-2010, 09:29 AM
| #7 | |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
| Quote:
| |
|
| |
|
03-25-2010, 02:51 PM
| #8 | |
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
| Quote:
The truck will probably start shutting down without one though. | |
|
| |
|
03-25-2010, 03:39 PM
| #9 |
| Rock Crawler Join Date: Sep 2009 Location: Abbotsford BC
Posts: 563
|
are you using the bec just to power the servo or is it plugged into the receiver??? if your running it through the receiver, it might be the receiver not liking the high voltage. also, try playing around with the voltage, see if anything changes.
|
|
| |
|
03-25-2010, 05:10 PM
| #10 |
| Rock Crawler   Join Date: Jan 2009 Location: Christchurch, New Zealand
Posts: 501
|
Also, what C rating is your battery? I have found with my 3S 1500mAH 25C batteries that when they are nearing cutoff I start getting issues with my steering twitching. Occassionally, I would get a twitch in the steering, or stall out when really pushing the rig. This is with the BEC set at 7.4v and wired direct to the servo. With my 3S 1700mAH 35C batteries, no issues. Cheers, Mike. |
|
| |
|
03-25-2010, 10:16 PM
| #11 |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
|
I was using it just the servo I never thought of the lipo thing the pack i run are 20/30c Im confused with this stuff but im sure there will be more MONEY involved  Come to think of it would be twitchy with a fully charged packs
|
|
| |
|
03-26-2010, 01:37 AM
| #12 |
| Newbie Join Date: Feb 2010 Location: Ks
Posts: 41
|
i just got this sevro and man i hope i dont run in to this problem
|
|
| |
|
03-26-2010, 02:24 AM
| #13 |
| Rock Crawler Join Date: Dec 2009 Location: Lynnwood
Posts: 569
|
i have this servo and bec set to 7v no issues at all
|
|
| |
|
03-26-2010, 05:25 AM
| #14 | |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
| Quote:
 | |
|
| |
|
03-26-2010, 08:14 AM
| #15 |
| Quarry Creeper Join Date: Dec 2009 Location: Rocklin
Posts: 209
|
Mine will only do this if the BEC gets switched off. Could easily be a bad BEC or as mentioned low power from your battery.
|
|
| |
|
03-27-2010, 09:43 AM
| #16 |
| Quarry Creeper Join Date: Oct 2008 Location: Crawlin' in NorCal!
Posts: 416
|
I had this problem last week at a comp and I ended up unplugging everything and plugging it all back in. Worked fine after that. I run the bec hooked directly to the servo. Not sure if there was a loose connection or some sort of interference. IMO the servo is not enough, when funds get better I will definitely be going for something with a higher torque rating.
|
|
| |
|
03-27-2010, 09:05 PM
| #17 |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
|
iI racked my brain with this issue unplugged replugged checked all the wiring no kinks my only thought is the bec is bad The servo has no twitching when hooked to the rx so i think its the bec What you mean you need more TQ 480oz isnt enough
|
|
| |
|
03-28-2010, 10:35 PM
| #18 |
| Quarry Creeper Join Date: Oct 2008 Location: Stink Grove
Posts: 403
|
Im tryin to find a BEC wiring diagram to power steering servo and to run dig servo off the rx Thanks  |
|
| |
|
03-28-2010, 11:44 PM
| #19 |
| Rock Crawler Join Date: Sep 2009 Location: Abbotsford BC
Posts: 563
|
i don t have a diagram, however all you need to do is remove the power and ground wires from the servo plug at the receiver and wire them to the bec. dont remove the red wire from the esc. the esc will now power the receiver and the dig servo.
|
|
| |
|
03-28-2010, 11:55 PM
| #20 | |
| Rock Crawler Join Date: Jan 2009 Location: Christchurch, New Zealand
Posts: 501
| Quote:
is my BEC supposed to look like this? Cheers, Mike. | |
|
| |
 |
| |
Linear Mode
