Exploding Capacitor

[krusty]

The first capacitor that I blew up was on my Hydra 240 I did however manage to make it pass at 48.3 mph. I then of course had to restore my boat back to stock I was running it today and blew up another capacitor on the stock ESC. I did manage to pass at 39.7 mph which I would be happy with had I not exploded another capacitor. As the picture shows I am physically blowing the outer case off of the capacitor and the internals are smeared inside my boat hull. I did check the temperatures on the ESC it was 95°F as well as the motor was around the same temperature, so I don't think it's a temperature issue. Someone had told me that the reason the capacitor blows is because the batteries unable to supply adequate current, I am running Maxx amps 8400 milliamp 35C 7.4 v x 2 I should not have a battery supply problem. I can tell I'm going to get good at changing capacitors on my Hydra 240. Any help would greatly be appreciated Krusty[IMG][/IMG][IMG][/IMG][IMG][/IMG][IMG][/IMG]

[domwilson]

Try shortening the ESC and/or battery leads. Capacitors will explode if there is too much ripple current. Does your driveline spin freely?

[krusty]

I will shorten the batt. leads, this will help with the ripple curent? I spun the drive line by hand and it is smooth.

[domwilson]

As more current flows thru a resistance, in this case, wire. The higher the voltage drop. Capacitors try to fill this voltage drop. Especially under heavy loads.
By the way, Nice paint job.

[krusty]

Thanks for the tip and the compliment on the paint had it done this year. On my mod set up with the hydra 240 I will cut 3" off the batt leds and I can shorten the leads to the motor by 2" and see what happens. I don't think I can get the stock esc apart to replace the capacitor but the hydra will be easy. Thanks again krusty

[domwilson]

It's dremel time!

[6S HYDRO]

Ill buy that esc for 20 bucks