Yeah 4 cell will be a bit faster as they charge up to about 6v, and lipo 1s only gets to 4.2v. The more volts the faster a motor spins. I swtiched to brushless and ran my 4cells for a few weeks, and when i finally got a 1s lipo it wasnt as quick. Kind of annoying seeing as my club has no rules regarding timing so everyone with a boosted speedo goes alot quicker.
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