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11-25-2008, 08:00 PM
| #1 |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
|  AX10 buzzing loud at 1/2 throttle
I just got my (lightly used) rtr ax10 in the mail today and noticed that at anything under 1/2 throttle the motor seems to buzz kinda loud. Is this normal for this type of truck/motor/esc? Everything else seems great. It runs and drives fine. I'm just not sure if the motor or esc might be on its way out. I've been out of the r/c stuff for about 16-17 years and totally new to this rock crawling stuff. Thanks |
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11-25-2008, 08:05 PM
| #2 |
| TEAM MODERATOR   Join Date: May 2004 Location: Tennessee
Posts: 10,855
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Could be a chip on a few teeth on the spur gear. Sometimes you can't even see them.
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11-25-2008, 08:08 PM
| #3 | |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
| Quote:
I'm not sure thats the problem. It buzzes when i'm holding the throttle slightly to hold the truck from sliding backwards and i'm not moving. It will even buzz standing still if i barely touch the throttle. It doesn't buzz at all when i am completely off the throttle. | |
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11-25-2008, 08:19 PM
| #4 |
| TEAM MODERATOR Join Date: May 2004 Location: Tennessee
Posts: 10,855
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Ahh,the way you stated it first,sounded like maybe a spur. With the new evidence...it definitely sounds like something in the motor or ESC. Can you see the comm? Shiney brass/bronze color or purple? Honestly,it's kinda hard to tell without hearing it. Allot of crawlers will "whine" or "buzz" a little under little throttle input. Outrunners or Cobalt pullers are even more prone to making a little noise. |
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11-26-2008, 01:55 PM
| #5 | |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
| Quote:
I actually found a few ax10 video's that didn't have blaring background music and they seem to have the same whine/buzz as i have. This is probly the best one i've come across. It gets loud when he comes close to the camera http://www.dailymotion.com/video/x5zg9m_axial-ax10_auto | |
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11-26-2008, 05:49 PM
| #6 | |
| TEAM MODERATOR Join Date: May 2004 Location: Tennessee
Posts: 10,855
| Quote:
That sure does sound like an outrunner in the video,pretty sure it is. Do you have a temp gun? Might run it a while and see if something gets hot. I could be of more help if I had the truck here. I know thats not possible though.  I know we've kindly ruled out the gears,something to keep in mind though,tight gear mesh on the spur gear will make noise and cause heat.It's a RTR right....is it all stock? If not,what motor/ESC/battery and servo? If it's got an outrunner,I'd bet your good. You'll want to put a brushed motor in it soon anyway. That noise from a crawler with an outrunner is pretty much normal.
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11-26-2008, 10:56 PM
| #7 | |
| Newbie Join Date: Jun 2008 Location: Piscataway
Posts: 32
| Quote:
Check the magnets in the motor! Could be cracked, and spinning around in the can!  | |
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11-29-2008, 01:39 PM
| #8 | |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
| Quote:
Yes its a RTR version and from what i can tell everything is stock. The motor is the green axial one. I see a number on the side that reads ax24004 if thats of any help. I really only get the noise at part throttle or when i am trying to creep slowly up something. At wot no buzzing at all. | |
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10-10-2010, 08:22 PM
| #9 |
| Rock Crawler Join Date: Oct 2010 Location: Ontario
Posts: 579
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Most RC cars and trucks make that noise. Try a drill at part throttle. from what i can tell from your description its normal. Just a motor under load. One fix might be to try a 55t motor, it could be that the 27t thats in it is working to hard.
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10-11-2010, 08:53 AM
| #10 |
| Quarry Creeper Join Date: Sep 2008 Location: Kuala Lumpur, Malaysia
Posts: 372
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Brushed motors like that are usually very smooth on start up and low speed, one of the reasons we still use them for crawling. I'd suggest take it out and open it up, check and clean the brushes and commutator. Some ESC's can be a little rough, is it still the stock one? Cheers. |
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10-11-2010, 09:59 AM
| #11 |
| Sometimes, I make things.   Join Date: May 2009 Location: Mt. Upton
Posts: 1,043
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Just run it wide open all the time |
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10-11-2010, 12:57 PM
| #12 |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
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Holy Old Thread Guys!!! Lol  This truck is long gone.
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10-12-2010, 09:19 AM
| #13 |
| Rock Crawler Join Date: Dec 2009 Location: Beaumont, Tx
Posts: 507
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See what happens when you dont put a resolve to the problem? Well at least we know someone can use the search. . . |
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10-12-2010, 12:48 PM
| #14 | |
| Rock Stacker Join Date: Nov 2008 Location: W. Springfield
Posts: 58
| Quote:
I do suppose that selling the truck did resolve the problem | |
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