c/dredge-operators

Chose a cutterhead with 3 teeth instead of 4 on a sand job in Mobile last month and it cut through way cleaner

Old foreman swore by running the cutterhead at half speed in mud. He was dead wrong.

Worked a job in Baton Rouge last summer, dredging a silted-up canal. Foreman kept yelling at me to drop the cutter RPMs to 12 when we hit soft mud. Said it would keep the pump from cavitating. I listened for a week and got maybe 30 yards done a day. Swapped back to 18 RPM on my own and production jumped to almost 80 yards a day. Pump never cavitated once. Anyone else get bad advice from someone who just refused to update their methods?

I finally realized I was running my dredge pump way too fast for 2 years straight

An old timer named Pete at the marina in Galveston watched me struggle for 5 minutes, then just said 'you're cavitating the hell out of that thing, slow it down to 1400 rpm'. Has anyone else found they get way more production with way less throttle?

That time an old timer told me to grease the cutterhead bearings every shift

I thought he was just being paranoid, figured once a week would be fine. After 3 months, I burned one out on a sandy job near Baton Rouge and lost half a day swapping it. Anybody else learn that lesson the hard way?

Blew a hydraulic hose on the cutterhead yesterday

I was about 4 hours into a dredge job near Mobile Bay and suddenly saw oil spraying everywhere. The 1 inch hose on the cutterhead just let go, no warning at all. Had to shut everything down and spend 2 hours fishing the broken piece out of the mud. Cost me like $300 for a replacement hose and lost half a day's work. Does anyone carry spare hoses onboard or just hope for the best?

That 80/20 silt rule I always ignored... turns out it matters

I was chatting with a older operator down at the Evansville yard last Tuesday. He told me if your dredge output is more than 20 percent silt, you're basically just churning water and wearing out your pump for nothing. Looked it up that night in the old Army Corps manual I found online and sure enough, the efficiency curve drops hard past that point. Has anyone else been running blind on this and just guessing based on feel?

Remember when we had to guess the depth by feel of the cable?

Back in 2008 on the Mississippi job, I was running an old hydraulic dredge with no digital readouts. You had to watch the cable tension and feel the vibration through the cab floor to know if you were digging too deep. Now I got a monitor that tells me exact depth, suction pressure, everything. My old timer foreman woulda laughed at the screens. But I still catch myself looking at the cable more than the screen. Anyone else trust the old feel over the new gadgets?

Rant: The guy who told me to 'just eyeball the slurry line' almost cost me a pump rebuild

Last month I was working a job down in Pascagoula, running a 12-inch cutterhead in some nasty silt. This older operator, been doing it 30 years, came by my ladder and said 'don't bother with the flow meter, just look at the slurry and you'll know.' I listened to him for 3 days. On day 4, I started losing vacuum and the pump was surging like crazy. I shut down, pulled the suction line, and there was a fist-sized chunk of concrete wedged right at the impeller. The old guy just shrugged and said 'well, you gotta learn somehow.' Cost the company $800 in downtime for me to learn his lesson. Anyone else deal with these old-timers who swear by 'feel' over gauges?

Overheard a guy at the fuel dock say 'just run it dry, it'll be fine' and I had to bite my tongue

I was filling up at the dock in Morgan City last Tuesday and this older operator is talking to a younger kid about winterizing the dredge. He says something like 'don't bother draining the fuel lines, just run it till it sputters and it'll be fine.' I wanted to pipe up so bad because I had a buddy who did that and ended up with water in the injectors that cost him $1200 to fix. Has anyone else heard some jaw-dropping bad advice get passed around like gospel?

Hardened steel cutter teeth were a game changer for me

I ran a 12 inch cutterhead in Charleston harbor last year and burned through standard teeth in 3 days. Switched to hardened steel ones after a buddy kept pushing them. They lasted 2 full weeks through the same mixed sand and clay. Anyone else notice that big of a difference with different tooth materials?

Had a mechanic tell me I was running my dredge pump wrong for 8 years

Guy at the Husky in Baton Rouge watched me fuel up and said I should be running 200 RPM lower unless I hit rock. Now I'm wondering how much fuel I burned up on that old Mighty Mite.

Dropped $400 on a hydraulic dredge pump upgrade and it paid off in 3 weeks

That new pump cost me a fortune but it cut my cycle time by half on the Mississippi job and I'm already seeing the savings in fuel costs, anyone else shell out for a big upgrade that actually worked?

PSA: Don't ignore that ticking sound in your pump like I did in Baton Rouge

I was working a job on the Mississippi River near Baton Rouge last month and heard a light tick from the cutterhead drive. Figured it was just some debris bouncing around, so I kept going for another two shifts. Big mistake lol. By the third day the whole assembly started vibrating bad and I had to shut down for an emergency pull. Turned out a bearing cage had cracked and the race was about to fail. Cost the company $4,200 in parts and lost three days of production because I didn't stop to check it sooner. My foreman just looked at me and said "you heard it and you kept running." Lesson learned hard. Has anyone else had a small noise turn into a major repair on a project?

The shift in dredge pump wear after switching to ceramic liners

I noticed a huge difference in pump life after a job on the Mississippi River near Baton Rouge about 8 months ago. We swapped out our old steel liners for ceramic ones on a 12-inch dredge pump. Before, we were replacing steel liners every 3 weeks because of all the sand and gravel. With ceramics, we just pulled the same set after 12 weeks and they barely had any scoring. Has anyone else seen this kind of longevity gain with ceramics, or was our sand just especially rough on steel?

That $40 Harbor Freight dredge cutter head I laughed at actually outlasted my expensive one

That $60 'professional grade' grease gun was a total waste until I actually used it on the right fitting

I spent 6 months cursing the thing on my 3412 Cat because I was using the wrong coupler head, a dude from the barge next door literally laughed at me and handed me the right one, now it works like magic so has anyone else been humbled by a little brass adapter?

PSA: Spent a morning watching the dredge at Myrtle Beach and changed my mind about slower passes

I was down in Myrtle Beach last week and watched a guy work a section near the pier for about an hour. He was moving at half my usual speed but the cut was so clean and even I couldn't argue with the result. Has anyone else tried crawling along and seen better material removal?

Am I the only one who got burned by that cheap hydraulic oil?

I figured I'd save some cash on a big job last month and bought a 55 gallon drum of the no-name hydraulic oil from a surplus place. Paid $180 for it compared to $450 for the name brand stuff. After about 60 hours of running my 8-inch cutterhead dredge, the pump started sounding rough. Pulled the filter and it was full of black sludge. Now I'm looking at a $1,200 pump rebuild and probably a full system flush. Has anyone else tried cutting corners on fluids and regretted it?

Went with a manual ladder dredge over a hydraulic one for the Clearwater job

Everyone on the site said I was nuts. The project was a 3 month silt clearing job on the Clearwater River in Idaho. The foreman pushed hard for a modern hydraulic cutterhead dredge. Said it was faster. I argued for the old style ladder dredge with the chain of buckets. My call. The hydraulic rig would have cost us $12,000 more to rent for the season. But that wasn't the main thing. We had big, buried timber down there. Old log drives from a century ago. A hydraulic cutter would have just chewed those logs into a million splinters and jammed the pump solid. The bucket ladder? It just grabs the whole log and lifts it out. Clean. We lost maybe half a day of production total to pulling out twelve whole logs. No pump damage. No downtime. Sometimes the old way is the right way for the ground you're working. Anyone else ever go against the grain on equipment choice and have it pay off?

Vent: A simple pump seal replacement turned into a three day job

Got a call last week for a worn out main pump seal on our old 12 inch cutter suction dredge. Figured it was a half day job, tops. The manual said to just drop the suction elbow and pull the shaft. Well, the bolts on the elbow flange had basically become one with the metal after twenty years in river water. Ended up burning through two sets of cutting wheels and a whole can of penetrating oil just to get them off. What should have taken 4 hours ended up taking three full days of cutting, heating, and cussing. Makes you miss the days when you could just order a part and slap it in. Anyone else run into a job recently where the 'easy fix' turned into a major project?

Showerthought: Saw a crew working a suction dredge on the Ohio River near Cincinnati last week and the spoil line looked way longer than normal.

They had it running almost 800 feet up the bank to a settling pond. Ever had to run a line that far, and what's your max practical distance before you need a booster pump?

Question about using a drone to check a dredge line

I was working on a big project in Mobile Bay last month, and the boss brought in a drone to fly over our dredge line. I thought it was a waste of time, just a toy for the office guys. But then the pilot showed me the live feed on his tablet. We could see a clear sand bar forming about 300 feet ahead of the cutter head that we couldn't spot from the deck. It saved us maybe two hours of repositioning blind. The detail was crazy, you could even see the water color change where the bottom was softer. Now I'm looking at getting my own license to fly one. Has anyone else here started using drones for survey work, and what model are you using?

The old way of setting my dredge anchors was costing me hours every week

For years on the Ohio River, I'd drop two anchors and call it good, but the current would shift us constantly. After a job near Cincinnati where we lost a full day to repositioning, I switched to a four-point system with a buoy on each line. Now I can hold position within a 5-foot radius even in heavy flow. Anyone else make a simple change that saved a ton of time on the water?

Warning: I thought a 4-inch suction hose would be fine for a small job in Mobile, but my old 6-inch saved the day.

Honestly, we were just clearing a small silt basin behind a new build, maybe 200 cubic yards total. I figured the smaller hose on the dredge would be easier to handle and save fuel. Tbh, the 4-inch clogged three times in the first hour on some old tree roots. Switched back to the trusty 6-inch and it just powered through, finishing the job before lunch. Anyone else have a 'too small' tool story that bit them?

PSA: The channel depth at the old Miller's Bend site went from 4 feet to over 12 in just two months after we switched from a 6-inch to a 10-inch cutterhead.

Has anyone else seen a cut that aggressive from just a head swap, or did we just get lucky with the sediment composition?