RC-Monster Forums - View Single Post - What is this BS Castle is feeding this customer?

BrianG · 05.20.2008, 05:19 PM

6s right off the charger is 25.2v, so no. It'll work, but I don't think for long. Not to mention the EMF spikes when braking will exceed this by quite a bit. I believe the MMM uses 35v caps, which gives a little leeway, plus you never want to run a cap right at its working voltage. Also, that Novak cap has a pretty high rating for its size and I think would heat up quite a bit.

I would use several smaller 35v or 50v caps in parallel - something around 330uF-470uF each. Obviously, you'd need low-ESR caps, so look for the 105*C rating. eBay has them sometimes pretty cheap (don't know about the quality), or electronic supply places have them too, but they usually require a large order.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	05.20.2008, 05:19 PM 6s right off the charger is 25.2v, so no. It'll work, but I don't think for long. Not to mention the EMF spikes when braking will exceed this by quite a bit. I believe the MMM uses 35v caps, which gives a little leeway, plus you never want to run a cap right at its working voltage. Also, that Novak cap has a pretty high rating for its size and I think would heat up quite a bit. I would use several smaller 35v or 50v caps in parallel - something around 330uF-470uF each. Obviously, you'd need low-ESR caps, so look for the 105*C rating. eBay has them sometimes pretty cheap (don't know about the quality), or electronic supply places have them too, but they usually require a large order.