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11-17-2009, 04:28 PM
| #1 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
Posts: 6,116
|  HH esc questions
do i need to run a bec with a hh esc, i'm running dual hh 7t pullers and a hitec 7955tg , my servo stalls out alot so i'm sure its because there is no bec because it never did this when i had fxr and bec
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11-17-2009, 04:48 PM
| #2 |
| owner, Holmes Hobbies LLC   Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Has your servo gotten really hot? Can you describe the stalling, if the rest of the rig shuts down or if the steering just gets weak?
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11-17-2009, 05:16 PM
| #3 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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well i'll be drive and while i'm driving my lcc and i have my car in a small bind and i go to turn my wheel the steering will stop for about 3-5 seconds i don't remember if the car stopped to, i was more thinking about the steering, and no the servo wasn't hot, and i did notice when it did this the buzzing stopped then it turned back on once i regained steering, it did this mostly while i was driving so thats what led me to conclusion of having bec problems
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11-17-2009, 05:34 PM
| #4 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Could be the BEC cutting out under higher loads, or your servo may have been previously overheated and it is pulling the big amps.
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11-17-2009, 05:37 PM
| #5 |
| RCC Addict  Join Date: Jun 2009 Location: California
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John, have you had many reports of this problem with your TM? People not running BEC's? |
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11-17-2009, 05:38 PM
| #6 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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i don't think its the servo, i didn't do this last time i drove the car as a shafty, so do i need to get an external bec, or i'm not sure if it this esc, but i think it is, can i program the bec through the computer, and do you mean big amps from the battery or the esc, because that battery should have plenty of amps to move it and anything else
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11-17-2009, 05:44 PM
| #7 | |
| Keep it real  Join Date: Jun 2006 Location: Yakima,WA
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11-17-2009, 05:45 PM
| #8 | |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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11-17-2009, 05:46 PM
| #9 |
| RCC Addict Join Date: Jun 2009 Location: California
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No. He is saying if your servo was damaged or overheated at one time in its life, that it could be pulling to many amps, because its not working properly. Run a BEC and see if it fixes the problem, then you will have some sort of answer. Last edited by fa1rch1ld; 11-17-2009 at 05:49 PM. |
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11-17-2009, 05:50 PM
| #10 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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how hot is over heating for a servo its never been to hot to touch, but it has been on the high warm side before after some long runs but never hot,
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11-17-2009, 05:52 PM
| #11 | |
| Keep it real Join Date: Jun 2006 Location: Yakima,WA
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11-17-2009, 06:07 PM
| #12 |
| RCC Addict Join Date: Jan 2009 Location: Sebastopol CA
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I'm running the same ESC with two 45 turns and a futaba 9157 on my berg. I can't get the system to brown out at all so far. I wouldn't think those motors would pull that much more juice but I could be wrong. |
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11-17-2009, 06:12 PM
| #13 | |
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11-17-2009, 06:32 PM
| #14 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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i just got onto hitec and i found that on a load this servo pulls 4200 mah so put this into amps it pulls 4.2 amps (i think i did my math right) it has a 5a bec does 2 pullers pull .8 amps from the bec when you got a load on them http://www.hitecrcd.com/product_file...nal_080215.pdf |
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11-17-2009, 09:54 PM
| #15 | |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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The amp rating from the factory doesn't help us much actually. It may be a rating to produce maximal torque. Unless the drive board has amp limiting, the servo motor will stall as much amperage as the battery and wires allow. I would say try a BEC. It may solve it. It could still be a amp hungry servo, however. Swapping in another servo would be a good way to see what's up too. The best solution would be an amp meter to see exactly what is happening. I have seen and killed a lot of hitec servos. They can cause a TON of weird problems when they go bad. Last edited by JohnRobHolmes; 11-17-2009 at 09:58 PM. | |
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11-18-2009, 01:47 AM
| #16 | |
| RCC Addict Join Date: Jun 2009 Location: California
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11-18-2009, 01:57 AM
| #17 | |
| I wanna be Dave Join Date: Sep 2008 Location: behind the wheel of a monster truck...
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11-18-2009, 02:21 AM
| #18 |
| Who's your Daddy-0! Join Date: Mar 2008 Location: Augusta
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I'm running 2 10T pullers and a HT7955 and Punk dig on 3s with a HH Torque Master ESC. I've had it under some nice binds with zero issues! I would say it pushes the servo as hard as a Castle BEC! I would check your servo. Try what John said and swap another servo in and see if that is the prob.
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11-18-2009, 10:13 AM
| #19 | |
| Quarry Creeper Join Date: Jan 2008 Location: pittsburg
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11-18-2009, 05:46 PM
| #20 |
| Got Worms? Join Date: Jun 2009 Location: Golden, CO
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found my problem i had my voltage cut off turned off and i'm running a123 cells and i was down too like 3-4 volts so once i charged the battery it stopped stalling in a bind since there wasn't enough torque to overcome it, i feel stupid right now, buyt problem fixed, i think i'm gong to upgrade to the 7950, is there a way to put the 7.2 volts to the servo with the built in bec
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