jkflow
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The 4mm will melt off with the Firma160 if you are pushing it hard, for me that happened with normal street bashing.
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I'm going to eventually get a 4082 1720kv surpass motor or 4585 1580kv in it. So I can gear it up a little anyway. They're both 6.5mmOr just make an adapter from the size bullets on your motor now (4mm) to the male bullets to go into the esc (6.5mm?) like the post from “Thebadazz”View attachment 165576
^^^ What I would do also.Don't cut anything, desolder the 4mm bullets and replace with 6.5mm. Don't be tempted to cut anything on the motor side.
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