Capacitors - What's the REAL story?

[SnowDrifter]

For what it's worth: I built a cap bank after seeing the results of these tests. I'm pretty happy with how mine turned out

This video is quite a bit of me just playing around, so watch it all if you wish. But if you want to see the same song before/after watch the beginning then skip to 2:55

Load test:

Here's what happens if I exceed alt output. Does a great job of cushioning the drop between alt charging voltage and battery resting voltage.
Youtube is taking forever to trim the video... So if it doesn't start out with me playing trunk muzik skip to 1:03

And the cap bank itself

[snafu]

You know what's funny . . . people have been dissin' caps for YEARS. And now SD says . . . hey, I wanna prove it to myself. Even though the Stinger volt meter can't sample very quickly at all, it can still capture the benefits of using capacitors versus not using them. SD - repeat your test with a quality 1F capacitor. You've got like four paychecks worth of caps there for most people . . .

Could this be the start of a new era?

[alaskanzx5]

loving on the testing being done. really helps me understand why the cap ive been using for the last 2-3 years has done me right.

still curios as to if its more cost efficient to use caps then batts. would really be install dependent though from what im seeing. I mean if a 2500.1bdcp does better with 1 farad while doing bursts and that rockfor cap you guys used for the test can be found for about $80-120 then it is cheaper then a batt for 200-400. a test with a battery that is commonly used for that sized amp compare to the test result of the caps would great.

do you guys plan on testing batt with that amp? would be interesting to see the outcome.

[HunterJohnson]

Batts are far superior for daily music.

Until they make a big enough cap ill be using batteries

[Brandon15zzz]

You don't need one big enough just enough of them. My buddy is going to be running 10banks in his Tahoe with 4 n3 18's and 2 sd16k's. he has a dc power 300 amp alt as well.

[HunterJohnson]

You don't need one big enough just enough of them. My buddy is going to be running 10banks in his Tahoe with 4 n3 18's and 2 sd16k's. he has a dc power 300 amp alt as well.

He's just running caps?

[Brandon15zzz]

Yes. He probably won't ride around blaring his music full tilt all day. But he will do demo's and he probably going to do park n pound this year. He's one of my teammates he won s5 last year and that's his goal this year. The caps charge so fast that the alt should charge them quickly. He's been in constant contact with the manufacture and they said that it should be just fine. So yes we have testing to do.

But one of our other teammates tested 2 banks this weekend in his setup. He charged to 14.9 ran off no alt no batts just straight to the amp. He did a 149.3 clamped 1900+ out of a dd m3 around 3 ohms. He dropped from 14.9 down to 14.3 for a burp. So if he had an alt charging the caps there would have probably been no drop at all.

[HunterJohnson]

Yes. He probably won't ride around blaring his music full tilt all day. But he will do demo's and he probably going to do park n pound this year. He's one of my teammates he won s5 last year and that's his goal this year. The caps charge so fast that the alt should charge them quickly. He's been in constant contact with the manufacture and they said that it should be just fine. So yes we have testing to do.

But one of our other teammates tested 2 banks this weekend in his setup. He charged to 14.9 ran off no alt no batts just straight to the amp. He did a 149.3 clamped 1900+ out of a dd m3 around 3 ohms. He dropped from 14.9 down to 14.3 for a burp. So if he had an alt charging the caps there would have probably been no drop at all.

Idk how big each of the banks of caps are. But on sd 16k's they'll prob be great for a burp. But even 3/4 up for a minute of playing time I bet those amps blow

[Brandon15zzz]

I don't know. IH8PunkRok has done calculations that says how many watts his banks can support from 15v down to 10v. It's a lot I don't remember right off hand. But he was going to run 2 tar 20k's and at full power on music they would draw 900 amps max. And he was going to be able to support those for a good bit. But since the stuff happened in Boston it was going to take like 6 months for him to get his amps. So he went back to sd again.

[HunterJohnson]

I think he would need more alternator amperage