TIL the hard way about running a 6-inch cutterhead too fast in clay

Popped a shear pin on my 6-inch cutterhead last Tuesday while working a job near Baton Rouge. Thought I was just being efficient running at full throttle through that heavy clay. Turns out pushing 1200 rpm in dense material just snaps everything. My mentor told me later you gotta drop to 800 rpm max in clay or you'll wreck your gearbox too. Anyone else had a similar wake-up call with their cutting speeds?

2 comments

2 Comments

the_skyler27d ago

Watched a buddy melt down a gearbox doing exactly this in Mississippi.

reese_bell27d ago

yeah that sounds about right, those little 4L60s just can't take that kind of abuse. if you're gonna try that in a Mississippi summer you better have a big cooler and maybe some water wetter in there, and even then it's a gamble. i've seen guys do it with a manual and a heavy clutch and still cook the input shaft bearing. best to just keep it in the high range and let the engine do the work, or you're replacing the whole unit.