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Originally Posted by BP-Revo
Wheelbase is ~220mm according to Tower, which means that the chassis plate area itself must be at LEAST 150mm, probably more. The only thing the lipo's must be short enough to clear is the steering servo, which can't be more than 25mm or so.
However, I am using smaller packs which are only 35mm wide and 98mm long. These will be used in 8S configuration. The higher voltage should reduce the current requirements. I did some simple calculations and even factoring ~25% more watts than the motor's continuous rating is, I only came out to 35 amps continuous. The cells are capable of 42amps, and my ESC will be capable of 45 (and has a programmable cutoff which protects against over-drawing). Again, this is all preliminary, but as of now, I am assuming it should work pretty well. My planned motor is a LMT1530 by the way.
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I think you're a little off on your servo length. Most standard steering servos are around 1.6" long (40.64mm). Even a mini servo like a Hitec HS-81MG is 30mm long.
The packs sound like they should fit ok. They sound like the same size as I use in my 18th scale vehicles.