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09-21-2009, 05:04 AM
| #1 |
| Basher Join Date: Jun 2009
Posts: 59
|  Gearing Help with 3900KV motor I ordered a Turnigy/EZRun 60 amp ESC and EZRun 3900KV (10T) motor combo. I need some help to sort out gearing before it arrives. I have the stock 18/87 RTR gearing right now. What should I run with the brushless? Do I need the 75 tooth spur like the kit comes with? Please let me know what you have had success with. Thanks |
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09-21-2009, 09:54 AM
| #2 |
| Addict Join Date: Jun 2009 Location: RI
Posts: 997
| I say your close, now it depends on your running area. Get a 16, a 17 and a 19 maybe a 20-21 if where your running it is smooth and wide open. 16 if it's rough and or tight area, 20 would be smooth and open.  I'm running 18/87 with the 3500 vxl motor. Plenty fast, good torque. Track I went to is not to tight so gearing was great. |
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09-21-2009, 01:39 PM
| #3 |
| Newbie Join Date: Jul 2009 Location: Sandy, UT
Posts: 25
| Really? That sounds kinda low. I was running 22/81 on my VXL and it stayed cool, even after 20 minutes of HARD running. This was bashing in a pretty open area though...might drop it a little for the track. I've actually geared it up for now though...24/81. Haven't tested it yet, but I expect it to work well. I dunno if I'll like it as much, but I figure I might as well try it since 22/81 didn't get the ESC or motor very hot. |
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09-21-2009, 01:53 PM
| #4 |
| Basher Join Date: Jul 2009
Posts: 79
| I am runnin a ezrun 13t, and I have mine at 17/87. It gets a little warm, but nothing to be worried about. |
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09-21-2009, 02:29 PM
| #5 | |
| Basher Join Date: Jun 2009
Posts: 83
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09-22-2009, 08:14 AM
| #6 | |
| Basher Join Date: Jul 2009
Posts: 79
| Quote:
Well, honestly, I just got it about a month ago. I have ran it 2 or 3 times at the track.. and a handfull of times in front of the house. | |
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