I finally figured out I was running my cutterhead at way too high RPM for 3 years

Was on a job near Baton Rouge last month, clearing out a silted-in canal, and a older operator flagged me down during lunch. He asked why my discharge lines were vibrating so bad and I just said that's how it always ran. Turns out I was overspeeding the cutter by about 80 RPM which was pulverizing the material instead of lifting it. My production numbers jumped nearly 20% the next day just by dropping the throttle back. Anybody else have a basic setting they ran wrong forever without realizing it?

2 comments

2 Comments

cooper.nathan28d agoMost Upvoted

That 80 RPM swing is a bigger deal than people give it credit for. I ran a 6 inch dredge in a Texas drainage ditch for two years with the ladder angle wrong, had the cutter digging down instead of skimming the top, and wondered why I was always burning through teeth. Dropped it back to a flatter cut one rainy Tuesday and my pump stayed clear for the whole shift instead of clogging every hour. It's embarrassing how long you can miss the obvious stuff when nobody points it out.

alicea2627d ago

Man, that ladder angle thing gets so many guys. I watched a guy on a small lake job run his ladder damn near vertical for months, thinking he was getting deeper cuts, but he was just making a mess of the bottom and wearing out his pump liner twice as fast. The real kicker is once you finally get it set right, you kick yourself for not trying it sooner just out of curiosity. It's wild how those little adjustments, like 80 RPM or a few degrees of angle, can totally change the whole job. Makes you wonder what else we're all just accepting as normal when it's actually dead wrong.