capacitors: what are they for and how many is enough?

[nova68]

Will two of these Rubycon 35VDC 560uf High Temp. capacitors work on a Hydra 240LV I am running a Neu 1521/1.5D on 4S2P each battery is 50c 5000mah with Octura X447/3

[FE Wannabe]

CAPs for the T180A

Let me preface this with "I am no expert" and I do not have an EE behind my name, but:

From what I have heard, you can't go wrong adding the same exact capacitors as the manufacturer puts on the ESC.

So, for those of you running the Turnigy/Seaking 180A ESCs, you can buy the same exact capacitors from HERE

Or the high temp 35V 1000uf RX30 Rubycons HERE

He offers free shipping that was fast as well.
My order was placed Monday, shipped from NY and arrived on Wednesday in CA.

Brad

[ray schrauwen]

Thats where I get mine but, the 63V ones are special order, lead time, 18-28 weeks.

..and if you ask the cap king, he will reccommend the best ones for our needs. His caps are very well scrutinized and have very low failure rates. Good reading there too.

[PBO]

The smaller the capacitor the less resistance, therefore using a few small caps is better than using a single large one. Eg; 3 x 330 is better than 1 x 1000. You want them as close to the ESC as possible, this allows them to "filter" the ripple current most efficiently

[Leonard]

Hi. I would like if someone can assist me. I bought a TP 5660 800kv and swordfish pro300 and a capacitor bank from rcboatbitz. I want to run it on 8s or 9s setup, can anybody help me by showing me how to connect the capacitor bank. I really don't want to burn up my Esc.
Thank you

[sailr]

Very simple. You just wire it in parallel with the power wires.

[jamie]

Sorry my Iphone fritzed couldnt get you a better pic, but my etti cap bank is right there soldered to the ESC cables.

Aussie 37.jpg

[jamie]

Etti cap bank im using
etti.jpg

[Leonard]

Ok. Tq so much for the replay. I have the same bank am i will then solder it in parallel. Should i still use the Std bank that is supplied with the Std300A or will this one be enough for no spark.
Also. Any suggestions on wilt would be the best prop to use for my setup. I bought a octura x455/3 and octura x452/3. The 55 is for 8s and 52 is for 9s. Does that sound right, or can anybody suggest better option.
Tq again for the reply

[Leonard]

Has anybody used these TP motors from rcboatbitz before. I have been told that they are better quality then the leopard motors, Thats why i got this one.

[sailr]

I have heard both ways... Leopard better than TP and TP better than Leopard. Who knows

[Leonard]

Prop suggestion for my setup?

[Fluid]

...Should i still use the Std bank that is supplied with the Std300A or will this one be enough for no spark...

The caps do not eliminate the spark upon connecting the battery to the ESC - that is not their function. They are there suposedly to reduce the risk of ESC failure due to the ripple current when the motor is drawing more than cheap cells can supply. Make certain that the voltage of the caps is higher than the intended max voltage you will use.

..Any suggestions on wilt would be the best prop to use for my setup. I bought a octura x455/3 and octura x452/3. The 55 is for 8s and 52 is for 9s. Does that sound right, or can anybody suggest better option.

We cannot answer your question accurately without knowing what exact boat you will mount the motor in, the specifics of your packs (mAH, "C" rating), the use you will have for the boat, and your expectations. Are you looking for top speed, long run time, racing, sport running, what?


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[Leonard]

I just want fast but reliable.
My setup as follows
TP 5660 800kv
swordfish pro plus 300A
flex 1/4 with 3/16 step down prop shaft
2 x 4s 5000 50c
or
1 x 4s 5000 50c and 1 x 5s 5000 50c

all installed in a osprey 41" reinforced

Hope this can help

[Fluid]

Forget the three bladed props, you will probably need a larger thrust cone for that boat than 52mm for best efficiency. The 5660 is not a powerful motor compared to larger, the more common 5692 or 5698, so I'd start with an x455/2 on either voltage. You may be able to go up to an x460, but past that I have no idea. Expect speeds in the 45-50 mph range with a well set up hull.



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