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Throttle and engine speed

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New here. I have a Spektrum DX2S. When starting my 5B car the engine runs max. Is there a setting on the xmitter?
Welcome to the RCT fun house...

Sounds like your throttle trim isn't set properly. Here's a link for the manual for the TX. https://www.manualslib.com/manual/787388/Spektrum-Dx2s.html#product-DX2S

Your throttle trim is on top of steering wheel to the left. Pic of it below..

And the servo was centered again. When you installed the new RX. Sometimes they can become off center with upgrading your TX and RX.

Screenshot_20230819_120707_Chrome.webp
 
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