Air Funnel for Nitro RC Engines OS42581300 by O.S. Engine  [OS42581300]

Performance intake funnel for nitro RC engines

This O.S. Engine air funnel is an RC-scale intake accessory designed to fit inline with nitro engine carburettor inlets and help manage airflow into the engine. It is intended for model use only and described here in technical terms relevant to hobby workshop tuning.

Fitment involves aligning the funnel with the carburettor inlet and securing it at the manifold or clamp points. Ensure mating surfaces are clean and seals are intact to prevent leaks. Check clearances around the carburettor and throttle linkages to avoid interference, and use hand tools to avoid over-stressing fasteners.

In tuning practice, the funnel can stabilise inlet flow and reduce turbulent pockets that upset needle calibration. This assists in achieving consistent idle and cleaner transitions through the rev range. Inspect the funnel regularly and clear any deposits that build up.