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how to fit cap board
hi, can anyone help me out? i want to fit a cap board to my turnigy 180 amp esc but im not sure how to do it. could someone put me on the right road..thanks p.s what voltage board should i use.
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Its pretty easy - If you use Etti Cap boards solder the positive to positive and negative to negative. They are marked accordingly! Etti offers two different size boards I believe they are both sold on this site - if not Southriver RC has them both!We did it with a Bang!
Cats Are Where It's At! -
Why buy a cap board? Get 2, yes you dont need a freak'n herd, of the right size caps, two 1000mfd 50vdc caps will work and are plenty, put them between the batt leads. Thats 125% more capacitance then stock from the factory. But get only the best caps. Not some "sort of" close version. Buy EXTRA LOW ESR caps. Regular or normal caps will not work!
JohnChange is the one ConstantComment
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Rubycon ZL, ZLH series are low esr, you can find the properties on the netTwin Cat 135, Sprintcat40 (single-twin), DF 35", Maritimo, Mean Machine, SV 27
http://www.rcfastboats.com/Comment
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+1 on m4a1usr . See below how I did it. Wish it helps.Comment
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The ripple current on that link is 2480, I've seen them down to 1200 and possibly 980. Not sure what is OK but I have been checking every electronics store in my area as well as going to digikey, mouser, and others to find a 35v 1000uF axial cap with low ESR and have had no luck as the low ESR is not always stated. I think they are designated differently but cannot make heads or tails of it.Comment
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The higher the value, the better handling of waste heat in the cap. Its opposite what we might normaly think. While it is frequency dependent, switching, the more ripple current that can be "smoothed" out. Here is a good link with some technical and not so technical commentaries. http://www.badcaps.net/forum/showthread.php?t=1458 but it should make the point.
JohnChange is the one ConstantComment
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Here is my technique via pics. I use 4 Ruybycon 50V 470mFd caps and a small piece of circuit board that you can buy at Radio Shack. Mount the caps to the board as shown and they fit perfectly between the exisiting 3 caps on the T-180. Finish with heat shrink.Comment
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great job great idea questtekComment
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I used the Etti cap board from OSE. Its almost made for the Turnigy and Seaking 180s. A little modification and it takes the place of the original caps.Comment
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The T-180 has 3 caps, 35 VDC, 470 mFd. Rubytcon YXF. In my build when I add 4 additional caps I use the identical Cap but with a 50 VDC rating. This gives a greater safety margin when running 6s. Guys like Allen have blown several T-180's on 6s set ups because the 35 VDC rating is just quite not enough if there are spikes.
The 50 VDC version of this cap is fortunately exactly the same size which is why in my build all the cap heights are the same.
Some of the other guys use 1000mFd caps which are longer thus, when matched with the stock caps they are higher.
No problem with mixing the two voltages. I belive, however, it is important to match their YXF Cap performance rating.Comment
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