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11-16-2007, 10:42 AM
| #1 |
| I wanna be Dave  Join Date: Feb 2006 Location: Campbell, CA 4 hrs 2Rubicon !
Posts: 2,044
|  help on Mamba x BM16 , loosing power with crawlin up slow
Why does the power cut off? Bran new setup , Mamba x and BM16 outrunner motor 6 cell or 8 cell sub C 4500. The mamba max beeps when inching forward and as I get about 1 foot up of crawling it stops and starts rolling down ? How do I fix ? Custom super thanks |
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11-16-2007, 10:55 AM
| #2 |
| owner, Holmes Hobbies LLC   Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Are you using a BEC? What is your Gearing? Do you have a voltage cutoff set?
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11-16-2007, 03:25 PM
| #3 | |
| I wanna be Dave Join Date: Feb 2006 Location: Campbell, CA 4 hrs 2Rubicon !
Posts: 2,044
| Quote:
 Have a BEC straight from battery to servo. Have not yet swapped out for your castle Bec . only the Mamba provides power to AR6000 rec. The BEC has a switch for 6 volt or Power -?all power or 7.2 volt not sure) 8 tooth, can't go smaller, using RC4wd 2 speed tranny. But I will try bolting up my Puller 4:1 tranny between motor and RC4WD trans If I bolt in my puller tranny should I go with a 14 tooth pinion to the 4wd tranny  Thanks a million rocks | |
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11-16-2007, 03:41 PM
| #4 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Ahh, your tranny is the cuplrit I bet, the two speed doesn't have much geardown. Throw the 4:1 on there with the 8 tooth, use the 8 cell pack. That should fix it. Then start to gear up or volt up to get wheelspeed back. a 14t pinion might be pretty good, but I would still try it first with the 8t to make sure the problem isn't elsewhere.
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11-16-2007, 03:56 PM
| #5 |
| I wanna be Dave Join Date: Feb 2006 Location: Campbell, CA 4 hrs 2Rubicon !
Posts: 2,044
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Oops I made a mistake  Im using a emaxx tranny 78 spur 6 pinion, stalling with this one sorry wrong build, I've been back in forth with trannies But I will be changing to the rc tranny soon, still building |
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11-16-2007, 03:58 PM
| #6 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Throw the 4:1 on there anyway and see what happens. Probably overgeared or undervolted.
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11-16-2007, 04:13 PM
| #7 | |
| I wanna be Dave Join Date: Feb 2006 Location: Campbell, CA 4 hrs 2Rubicon !
Posts: 2,044
| Quote:
What do you think now? maybe brushless or bm16 is not the way to go | |
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11-16-2007, 04:47 PM
| #8 |
| I wanna be Dave Join Date: Oct 2005 Location: Columbia TN
Posts: 6,154
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The bm-16 likes a 3 cell lipo for sure.
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11-16-2007, 06:33 PM
| #9 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
|
Brushless takes more time to get it right, you have to gear and volt it to match the vehicle. If there is too much load on the motor the ESC can't control it. If a bit of work is too much for you then brushless is not the way to go for you.
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