ESC Capacitors

[mwry13]

I just picked up some 35v 330 UF caps for my MM, and i forgot which way there soldered on... Anyone care to share how they went again?
would appreciate it.

[glassdoctor]

Caps are marked with a "-" which is connected to the neg main power input.

[offroader]

Use a meter to see which side is -ve check for continuity between the negative side of the power and the solder points.

[BrianG]

And they should be soldered as close to the ESC as possible for max benefit. Here is a thread that shows how I did my Quark. I know it's a different ESC, but the principles are the same: http://www.rc-monster.com/forum/show...91&postcount=2

[GriffinRU]

Originally Posted by mwry13

I just picked up some 35v 330 UF caps for my MM, and i forgot which way there soldered on... Anyone care to share how they went again?
would appreciate it.

[jokerjustin]

griffin ftw!

[mwry13]

Whats the difference between caps with say a 330 Uf and the same voltage caps with like 1800 Uf... Is it better to be closer to whats stock on the MM? or should i go all out and get a big cap with a high Uf number?

[BP-Revo]

uf is the capacity of the capacitor. Bigger the number the more energy they can store. Having one 2000uf cap is the same as having 20, 100uf caps. However, I believe having less caps is more efficient.

[mwry13]

Originally Posted by BP-Revo

uf is the capacity of the capacitor. Bigger the number the more energy they can store. Having one 2000uf cap is the same as having 20, 100uf caps. However, I believe having less caps is more efficient.

So would you say having 2 or 3 330 Uf caps is better than having 1 1800 Uf Cap or something in that range?

[jokerjustin]

i would say the more the better because the more surface area will help with cooling. but on the otherhand u have slightly higher resistance

[squeeforever]

Originally Posted by jokerjustin

i would say the more the better because the more surface area will help with cooling. but on the otherhand u have slightly higher resistance

Surface area of what??

Originally Posted by mwry13

So would you say having 2 or 3 330 Uf caps is better than having 1 1800 Uf Cap or something in that range?

Thats the opposite of what he said...

2x330=660
3x330=990

or just 1800Uf and you surpass have 2 or three, and with what he said about having less is more efficient, having 1 1800Uf is obviously more efficient and better. At least thats what I got from what he said...

[jokerjustin]

i ment more cap surface area for better cooling

[BP-Revo]

Originally Posted by squeeforever

Surface area of what??

I assume he means the total capacitor surface area is larger, which reduces heat.

However, I personally have never had a capacitor heat up anything over room temperature. I used 3 25v, 2700uf capacitors wired in series with my HV4.5 and they added a significant amount of punch, as well as lowering my ESC temps a good 10* F.

[squeeforever]

Thats what I thought he meant, but it didn't make any sense since they shouldn't heat up...

[mwry13]

Ahhh thanks for the help guys... appreciate it... now if i can find my camera when i hit up the track on friday... ill post a small vid