Donald nailed it. Most likely your speed controller is in the receiver slot for the steering, and the steering is in the battery slot (which is why you get nothing on the throttle).
Any easy way to remember which channel is which is this-
1. Steering
2. Throttle
Think about how both of those words line up alphabetically and you have the channel number that they belong to. Steering comes first, so it's channel 1, Throttle comes second, so it's channel 2. Just an easy way to remember how to hook up ESC's and servos.
BTW, Vic taught me that about to 15-20 years ago..

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