09-02-2011, 09:34 PM | #1 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
| Electronic problem
Ok so here is the problem I'm having and what I'm running. Xr10 Dx3r Jr8711 Dual sidewinder Ccbec Wannadig Holmes 35t motors So the truck runs really good and smooth for about 5 minutes then the front motor will stall then power back up and then runs fine for a few minutes then does it again and sometimes it will do itto the rear. Everything is charged calibrated and set up. The escs aren't hot either. We are lost and can't figure it out. Sent from my LS670 using Tapatalk |
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09-02-2011, 09:45 PM | #2 |
I wanna be Dave Join Date: Sep 2009 Location: n. palm beach
Posts: 4,123
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The only thing that comes to mind is the CC Bec, is it new or used? Does it power up, do the lights power up. Do you have another bec that you could try. Could be the bec itself or maybe a bad connection, check all the connection. Hope this helps. |
09-02-2011, 10:12 PM | #3 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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The bec powers up lights are on and it is directly wired up to the servo so we don't think thats the bec Sent from my LS670 using Tapatalk |
09-02-2011, 10:13 PM | #4 |
Rock Crawler Join Date: Oct 2007 Location: Grants Pass
Posts: 806
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Are they sv2 or sct sidewinders? Reason I ask is i have gone through a bunch sending them back and forth with castle. What you describe is the exact same thing I was encountering. They would stall out and lose power. My front and rear would go back and forth and sometimes both stop. I still haven't gotten it quite straightened out yet and actually sent my whole truck with the last 2 bad ones to castle finally so they can see whats going on.
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09-02-2011, 10:50 PM | #5 |
Rock Crawler Join Date: Apr 2010 Location: Central FL
Posts: 509
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I had a similar issue with my sv2s... from my experience, it seems to be an issue with the throttle curve on the latest firmware. when I reset mine to linear, the stalling problem went away.
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09-02-2011, 11:12 PM | #6 |
Rock Crawler Join Date: Oct 2007 Location: Grants Pass
Posts: 806
| I never touched the throttle curves. I left it stock to linear on all of them.
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09-02-2011, 11:14 PM | #7 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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Ok awesome thanks for the info guys. They are the sv2 escs. We will try that and see if it works Sent from my LS670 using Tapatalk |
09-02-2011, 11:47 PM | #8 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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Ok so we reset them to linear and still the problem comes after about 5 minutes. I tempted the escs when the problem occurred and they were at about 140 degrees each. Is it heat Sent from my LS670 using Tapatalk |
09-03-2011, 12:09 AM | #9 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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I dont think being 140 would cause any problems but that sure is hot for a 5 min run. What is your gearing like? Also since it seems to happen more on the front esc try swapping escs and see if the problem is still the front or if it moves to the rear. How old are the motors? What battery are you running? Whats LVC set to? |
09-03-2011, 12:30 AM | #10 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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ya thats kinda what were thinking is that it is a heat problem. the lvc is set for auto lipo and we have also tried tons of different bats to make sure that isnt it. the motors are less then a month old. they have hardly any run time at all on them so i cant imagine that being it. im running 3s 1300mah batterys. the gearing is 14tooth gearing and the axles are brand new everything about them. so its not gears binding. everything seems to work well for 5 mins or less then the problem starts. im thinking its heat. if its hiting 140 that quick then something is wrong. we did remove the heat sinks on the escs to make them fit in the chassis since the escs are so large so that might be the problem. were going to stick the heat sinks back on in the morning and give that a try to see if that takes some heat off of them. were trying to figure this out asap cause we are headed to nationals in a few days. and of course something like this has to happen this close to a major comp. |
09-03-2011, 12:56 AM | #11 | ||
Rock Crawler Join Date: Oct 2007 Location: Grants Pass
Posts: 806
| Quote:
Quote:
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09-03-2011, 02:17 AM | #12 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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Doubt you will get a hold of anyone on Monday unless you have their home number... You could try dropping to like a 12t pinion and see if that helps, if the motors are cool and the ESC is that hot then the ESC is getting overworked. Also possibly switch to a value for LVC rather than auto, maybe it is glitching or something and hitting cut off before it is supposed to...I can easily get 10 min out of a 1000mah in my berg so you shouldnt be close to LVC yet. Also I havent explored the sidewinder v2's programming options, not sure if this applies to brushed as well as brushless, but if it has current limiting or anything like that try messing with that. I have read that sometimes limiting the current can actually build up more heat (doesnt make sense) so it is worth messing with both unlimited and limited. |
09-03-2011, 02:40 AM | #13 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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Thanks guys. We will see what we can come up with in the morning. They don't freak out it just stalls one out then if you let off the throttle and pull iyt again it's fine. Then a few minutes later it does it again. We will play with the castle link a little more and see if we missed something. We will put the heat sinks back on and see what that does also. I would call them but for right now that isn't going to get me anywhere by wednesday Sent from my LS670 using Tapatalk |
09-03-2011, 08:19 AM | #14 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Yeah, sounds like an ESC issue. Otherwise I would say maybe a hung brush.
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09-03-2011, 08:42 AM | #15 | |
Rock Crawler Join Date: Oct 2007 Location: Grants Pass
Posts: 806
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That was my first thought also but my motors were new from you. I did give the comm a cut and install new brushes but that didn't help. Even switched out the motors and the problems still occurred. | |
09-03-2011, 08:52 AM | #16 | |
Rock Crawler Join Date: Oct 2007 Location: Grants Pass
Posts: 806
| Quote:
http://youtu.be/Nu2B10zsRJU | |
09-03-2011, 10:08 AM | #17 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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Really seems to be "luck of the draw", Karma, or something like that for who gets good ones vs. crappy ones. | |
09-03-2011, 11:49 AM | #18 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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What firmware are you running? I had similar issues until I updated to the newest firmware. Worth a shot.
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09-03-2011, 11:54 AM | #19 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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Ya I thought maybe it was a brush to but we checked them and still does it. if we can't figure it out by tomorrow then the punk is going back in for now until I have more time. I would overnight 2 new escs but we would be pushing time bad Sent from my LS670 using Tapatalk |
09-03-2011, 11:56 AM | #20 |
Quarry Creeper Join Date: Apr 2008 Location: st. george
Posts: 218
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I'm running the newest one out from what I know. Sent from my LS670 using Tapatalk |
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