I ran my cutterhead at full tilt for years before a pump failure in Galveston showed me why that's dumb.

We lost suction on a big channel job because I was chewing up material too fast for the pumps to keep up, which overheated the whole system. The foreman pointed at the temp gauge and said, 'You're feeding a fire hose with a bucket.' How do you guys find that sweet spot between cutter speed and pump flow on different soils?

3 comments

3 Comments

thomasm151mo ago

Ouch, that's a rough way to learn. I usually start by backing the cutter off until the pump pressure looks happy, then creep it up. It's all about watching that suction gauge more than the dirt.

jakeb251mo ago

Listen to the mud's sound more than the gauges, like @thomasm15 hinted at.

the_rowan1mo ago

Totally get what you're saying. That suction gauge is your best friend when the mud starts talking. I've seen guys get so focused on the pump pressure they miss the whole story. Like when the mud sounds thin and watery but the pressure's fine, you're already losing the hole. Gotta watch that suction drop and feel the flow. It's a gut thing you learn after messing up a few times.