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Discussion Starter #1
I'm looking to swap power supplies on our chassis dyno form 1 cell to 2 cell cars.
I'm only doing 10.5,13.5,17.5 NON boosted

I only have info from 21.5 2 cell days, only needed 30 amp back then.

Would a 60amp power supply be sufficient? or can i get away with less?
 

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Non-Boosted isn't going to reduce the amps any as most motors can throw a ton of mechanical timing on (some are unlimited timing, like the Ballistic). 10.5 motors will pull more than 30 amps. A 60 amp power supply might be enough. But when testing it's common to go over that when you are trying to get close initially.

A good quality power supply certainly makes your chassis dyno testing consistent and convenient. Consider the Mean Well HRP-600-7.5 for 2 cell. It has wonderful load and line regulation. You can calibrate it to 8.44V. It provides 80 amps continuous with with 108amps peak. And it's small in size too. Brand new for $147. Hard to beat that.
 

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Discussion Starter #3
on our 1 cell 10five cars were 47-49 amps is the sweet spot

i have a 60 on the chassis dyno's i've built, yes we all use the mean well stuff,except for blaser pretty sure he runs some high zues ps..

no need to run car's at 8.4..the'll never see that on the track
 
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