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RC Glossary


New to the RC Hobbies? What does buggy, bulkhead, nitro mean in radio control car hobbies? Check out the glossary for remote control cars below.

High Speed Needle Valve - HSN --

The high speed needle valve regulates the amount of fuel that enters the carb of a nitro engine at high speeds (RPM). This is the tall needle valve located on the carb. Rotating the needle valve clockwise lets in less fuel (leans the air / fuel mixture), while turning the needle valve counter-clockwise lets in more fuel (richens the air / fuel mixture). Always adjust the HSN before adjusting the low speed needle.
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