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07.17.2008, 05:03 PM
I would go with 6s a123, most MM seem to be able to take 5s lipo, which is about the same as 6s a123. Plus the 1600 kv motor will be better with the increased voltage. Since you are using a 14t pinion, you will be slow with only 5s a123.
What speed are you aiming for?
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