April Means One Thing The water is warming up. Club schedules are posted. District race dates are locked in. If you have been spending the winter tuning on the bench, now is when it pays off. The 2026 NAMBA district racing season is underway across the country, and the first events of the year are […]
The Carb Is Not Set and Forget Most guys bolt on a Walbro, run the stock needle settings, and wonder why their Zenoah feels soft at the top end. The carburetor is where fuel and air mix. Get that ratio wrong and you’re either running rich and fat, leaving RPM behind, or leaning out at […]
Heat Is the Enemy — Don’t Let It Win Gas RC boats run hot. That’s not a bug — it’s physics. A Zenoah pulling full throttle on a warm summer afternoon generates serious heat, and if your water-cooling system isn’t dialed in, you’ll be limping back to the dock with a seized engine before the […]
Why Break-In Isn’t Optional A new Zenoah engine is a precision piece of machinery. The rings, cylinder bore, bearings, and wrist pin all need time to seat properly before you start pushing the throttle. Skip or rush the break-in process and you’re trading future performance for impatience today. The good news is it’s not complicated […]
The Clock Is Ticking at the Pond You’ve hauled your rig to the field. Other guys are already making passes. The last thing you want is to miss your heat because you skipped something basic in the pits. Race day prep isn’t glamorous work, but it’s what separates a solid run from a DNF. Here’s […]
The Prop Is Your Final Drive Ratio You can tune a perfect carb, nail your break-in, and fit a matched tuned pipe — then throw it all away with the wrong prop. The propeller is the last mechanical link between your engine and the water. It determines your top speed, your acceleration, and whether you’re […]
Your Cable Is Carrying Everything The drive cable is the mechanical spine of your gas RC boat. Every horsepower your Zenoah makes passes through that flex shaft on its way to the prop. Most builders spend real time tuning the carb and picking the right prop pitch, then bolt the cable together in five minutes […]
Your Engine Is Only Half the Story A well-built Zenoah engine deserves the right exhaust. Run a tuned pipe that’s mismatched to your setup and you’re throwing away power — simple as that. The good news is that tuned pipe tuning isn’t black magic. It’s physics, and once you understand what’s happening inside that cone, […]
