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07-15-2009, 08:34 AM | #1 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
| forward throttle trim not working
i had this truck for a couple weeks now. It worked fine right out of the box during that time , but this morning i noticed the truck rolling backwards while running up an incline so I adjusted the forward throttle trim and to my surprise nothing happened except the normal buzzing sound that it makes. Adjusting the throttle trim for reverse works just fine, but for the forward motion nothing but the buzzing sound. I did noticed that I did move forward a couple of inches here and there on a level surface but that's about it. Any ideas how to fix this problem... Last edited by pcsourced; 07-15-2009 at 08:46 AM. |
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07-15-2009, 11:55 AM | #2 |
On the lookout for Rocks Join Date: Mar 2006 Location: Monroe, Louisiana
Posts: 3,711
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Try resetting up the ESC.
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07-15-2009, 05:46 PM | #3 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
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the trigger of the pistol controller works fine, its the throttle trim that doesn't work properly. I'm just afraid that resetting the ESC is going to give me more problems as i've been reading on other posts. Also, any ideas why something like this occurred in the first place?? |
07-15-2009, 08:27 PM | #4 |
RCC Addict Join Date: Jun 2008 Location: Fresno
Posts: 1,464
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when resetting the esc make sure to first center your throttle trim on your radio rsetting the esc wont give you more problems think of it as rebooting your computer if there is a problem w/ the trim knob a wire may have just gotten loose on the pot. |
07-15-2009, 09:51 PM | #5 | |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
| Quote:
I'll try this out, but any ideas why something like this happened in the first place. I would hate to reset my ESC everytime something like this happens. the loose wire problem on the trim knob may be a possibility because I did drop the controller once. But it worked fine after that until now. But for a $300 RC car, I expect the controller to be more durable. but looking at the bottom of the box the crawler came in, it says its made in china... sigh.... | |
07-16-2009, 12:15 AM | #6 | |
Rock Crawler Join Date: Mar 2009 Location: West of Eugene, OR
Posts: 942
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Deep breath. You're not even sure what the problem is yet, so don't be quick to bash the product. Dropping any kind of electronic device that is designed to be held in the hand is never a good thing. We don't do this with our cell phones or laptops, so we can't expect more from RC controllers - the car is what hits the rocks. Reset the ESC and take it from there (be sure all trims are at zero when you do this). Last edited by JeepinOR; 07-16-2009 at 12:20 AM. | |
07-16-2009, 08:54 AM | #7 | ||
RCC Addict Join Date: Jun 2008 Location: Fresno
Posts: 1,464
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trust me, for a relativly capable crawler the rtr losi mrc is a steal. there are couple of guys in this forum that have invested up to and past a grand on these mini's i take it you're fairly new to the hobby? as seasoned veterans know, ready to run electronics are usually the first to hit the bottom of a trash bin. just a heads up; you might want to start looking into threads about an aftermarket servos Quote:
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07-16-2009, 10:27 AM | #8 | |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
| Quote:
I just want to know if anyone else had a problem like mine. I've still haven't tried resettng the ESC. I'll try that first. then I'll investigate with my limited knowledge on RC stuff to see if the servo connected to the throttle trim knob is giving me problems. Aren't losi servos good?? | |
07-16-2009, 04:50 PM | #9 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
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well...i reset the ESC and the problem is still there. So I guess the next step is the contact horizon hobby and have them service this truck. What a hassle!
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07-16-2009, 05:01 PM | #10 |
Rock Crawler Join Date: Mar 2009 Location: West of Eugene, OR
Posts: 942
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The wait may suck, but you should be set with that car being so new. By any chance, have you tried good, fresh batteries in the Tx? It may not help in this case, but those controllers are known for doing screwy things when the batteries are starting to die. (I've also read that they can be kind of picky about battery types. I have great luck with Rayovac Hybrid rechargeables.) Good luck, man. Last edited by JeepinOR; 07-16-2009 at 05:04 PM. |
07-17-2009, 12:01 AM | #11 |
Rock Crawler Join Date: Mar 2009 Location: Cottontown
Posts: 880
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Definatly give some new batts a try. I stick with sanyo 2700mah rechargables... Seems to be about the best AA on the market. Have you tried to wiggle the knob some, in every direction, pulling it out and pushing it in while turning it... if its a broken, or loose contact then that could solve your problem right there. Also, you say that the truck just all the sudden started acting up...? by any chance did you get it wet...? Does it drive forward at all, or only in reverse? Try to switch the throttle switch on the top of the radio to the reverse setting and see if when you push the trigger forward (as you would to drive in reverse) if the truck moves forward... let me know how that round of testing goes... |
07-19-2009, 09:59 PM | #12 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
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i tried everything....reset the ESC. Batteries in the transmitter are new so that's not an issue. Batteries in the truck are stock and fully charged. I also tried the throttle switch on the top of the radio to the reverse setting. The throttle trim just does not work in the clockwise direction. This truck has been kept indoors only and not abused. Its been five days since i emailed horizon hobby with my problem and still no response by them. I think this truck has a thirty day waranty and that time is coming up really fast. I'm very disappointed that my first real expensive RC truck is no different in terms of realibility than the ones should in toys r us! |
07-19-2009, 10:15 PM | #13 | |
Rock Crawler Join Date: Mar 2009 Location: West of Eugene, OR
Posts: 942
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You might try calling Horizon; definitely stay on it (and be careful not to drop the next Tx ;)). Last edited by JeepinOR; 07-19-2009 at 10:17 PM. | |
07-20-2009, 03:47 PM | #14 |
Rock Crawler Join Date: Mar 2009 Location: Cottontown
Posts: 880
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Well, not to rain on your parade or nothing, but horizon is gonna tell you something thats really gonna piss you off about the warranty. They say that the truck is only warratied until you take it out of the box. The second you remove it from its packaging all bets are off. However, they will attempt to fix whatever problem that you have. You will absolutely have to call them. I tried the e-mail thing, and after about a month with no response i gave up and used the phone. It sucks, but thats the way it is. Good luck tho |
07-20-2009, 04:09 PM | #15 | |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
| Quote:
What do you mean by attempting to fix the problem? In order for them to fix the problem, I have to ship the truck to them. If they think they can fix this problem over the phone they are mistaken. Something is wrong electronically. I don't want them to attempt to fix the problem, I want them to fix it. Also, when I called the horizonhobby support telephone number their automated call center gave me the option of leaving my telephone number with them to call me back at a later time when their support representative. Update. They actually called me back! They are sending me a replacement transmitter! They believe its the turn dial that is defective! They don't even want the old one back. They told me to throw the old one in the garbage. I'll keep everyone updated! | |
07-20-2009, 04:39 PM | #16 | |
Rock Crawler Join Date: Mar 2009 Location: Cottontown
Posts: 880
| Quote:
Darryl | |
07-20-2009, 06:07 PM | #17 |
Rock Crawler Join Date: Mar 2009 Location: West of Eugene, OR
Posts: 942
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07-28-2009, 08:26 AM | #18 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
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so I got the new radio in the mail yesterday. Binded the new radio to the losi mrc....and the same problem! The throttle trim just will not work properly in the clockwise direction. I contacted horizon hobby and they told me to send the whole truck+the two radios+the sales receipt back to them. So I'm off to the post office....i hope they just send me a new one. Its a nice truck perfect for my son because its not too fast and perfect size for indoor play. Just about crawls over all the toys that he places in front of the truck. He even made it crawl over his baby brother, but he got a earful for doing that! LOL!
Last edited by pcsourced; 07-28-2009 at 08:32 AM. |
08-03-2009, 09:31 PM | #19 |
Newbie Join Date: Jul 2009 Location: woodbridge, ontario
Posts: 11
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i think it may either be a receiver or ESC problem. The only servos are the ones for the front wheels for steering. Those were working fine. Here my theory: When I turn the throttle trim in the clockwise direction. A signal is sent to the receiver on the truck. That receiver then processes this signal and relays it to the ESC for the main drive motor to run. I don't think there are servos controlling the speed of the main drive motor. Its done through the ESC. But then again it may be something totally different because my theories may be wrong. I asked the hobby horizon repair guys to write down the problem and ship it back with the truck. Last edited by pcsourced; 08-03-2009 at 09:38 PM. |
08-03-2009, 10:04 PM | #20 |
Rock Crawler Join Date: Mar 2009 Location: West of Eugene, OR
Posts: 942
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It must be a bad Rx...? You--and your son!--will like the MRC once you get this bad apple out of the mix. Sucks that you have to wait again, though, of course... |
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