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​Engine Ventilation Tips



Keep that air moving! Providing a larger exit opening than the intake opening is necessary to keep those engines cool when they're inside a cowling. Make sure your edges are rounded and provide an open area as close as possible to your firewall to prevent hot air from being captured. Some modelers even provide a relief hole in the first former to provide a small pathway into the fuselage for additional cooling. This tip is also applicable to electric powered models.