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01-22-2005, 10:27 AM
| #1 |
| RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio
Posts: 1,673
|  What value of capacitors do I need?
I'm going to go to RadioShack and get some capacitors for my motors. What value should I get? Or does it matter?
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01-22-2005, 11:07 AM
| #2 |
| Rock Crawler Join Date: Dec 2004 Location: Land of the Free, because of the Brave
Posts: 891
| Buy the 0.1 microfarad capacitors. I bought the larger style ceramic disc ones. They were only .99 I think. |
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01-22-2005, 01:11 PM
| #3 |
| RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio
Posts: 1,673
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They were sold out of the little disc type, but they did have a larger one in the same capacitance. Here it is  0.1µF 50V 10% PC-Mount Capacitor Polyester Film http://www.radioshack.com/product.as...1069&hp=search Should be fine,right? |
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01-22-2005, 05:41 PM
| #4 |
| Rock Crawler Join Date: Dec 2004 Location: Land of the Free, because of the Brave
Posts: 891
| Looks like it would work fine to me. |
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01-22-2005, 10:06 PM
| #5 |
| Dirt Addict   Join Date: Jan 2004 Location: Stumblin' thru the parking lot of an invisible 7-Eleven
Posts: 1,053
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0.1uF Jay |
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01-23-2005, 10:13 AM
| #6 |
| Pebble Pounder Join Date: Oct 2004 Location: Colorado
Posts: 165
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01-25-2005, 04:57 AM
| #7 |
| Rock Stacker Join Date: Jan 2005 Location: No Fawk virgina
Posts: 87
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Okay I am hearing two things, one you must use these you void "warrenty" if not. Two it is total bs you don't need them. Who actually has experiance with them? thanks Pat
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01-25-2005, 07:22 AM
| #8 |
| Pebble Pounder Join Date: Oct 2004 Location: Colorado
Posts: 165
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Electric motors generate radio noise that can cause radio interference. Usually included with your motors are three 0.1µF (50V) non-polarized, ceramic capacitors. These capacitors should be installed on each motor to help reduce the noise generated by the motor and also to prevent possible damage to the speed control. Depending on your Rx and/or motor some folks run without them. Because lathe motors run at lower RPMs and draw less current than MMs or any of the “racing” motors, you don’t necessarily need caps for them. Manufactures of ESCs will always insist that you install them though. :-| A capacitor’s equivalence in the mechanical world is a shock absorber. You don’t need them on a car, unless the road you travel on is bumpy. A capacitor will absorb any electrical “spikes” that can cause your Rx to glitch. If you have a motor whose brushes are properly seated and it draws minimal current during operation, it may not need caps. I personally use them, because I have seen pictures taken by electron microscopes showing internal damage to ICs from static electricity (big spike). Damage that propagates over months before it causes the component to fail. That is why all CMOS devices are shipped in special conductive foam. |
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01-25-2005, 09:20 AM
| #9 |
| Quarry Creeper Join Date: Nov 2004 Location: MANVILLE
Posts: 413
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Caps are a cheap protection.out of experiance i did blow(partial blow )an esc and the only thing i did diff was to not use caps.never over geared or to many cells.just the last motor i put in it i got lazy and didn't put caps on.didn't burn it out all togetherbut now it doesn't react correctly.(don't really know how to discribe it)it's a novak esc forward only esc.forget the model off hand but this was the only motor i ran with out caps and it was a new stock motor.so rest asured i will always have caps on all my motors.
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01-25-2005, 02:21 PM
| #10 |
| Rock Stacker Join Date: Jan 2005 Location: No Fawk virgina
Posts: 87
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using caps wins thanks, Pat
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