tessa_kelly•5d agoMost Upvoted

Tried the twin-screw versus cutterhead on a rocky job near Norfolk

We had this job clearing out a channel near Norfolk that was full of broken rock and old concrete chunks. I ran the cutterhead for two days and it kept jamming up, lost maybe 6 hours total to clearing clogs. Swapped to a twin-screw on the third day and it chewed through that same material without a single stop. Has anyone else found twin-screw handles mixed debris that much better, or was it just a fluke with that site?

2 comments

2 Comments

mia_singh245d agoMost Upvoted

You say "it kept jamming up" but that just sounds like you were running the cutterhead wrong or not giving it enough time to do its job right. Twin screws are great for loose stuff but on rocky ground they tend to throw material around and leave a mess that needs cleanup anyway. Could be that the rock at your site was just weird and a different cutterhead setup would have solved it faster than swapping machines.

abby_henderson5d ago

Yeah totally, this is a solid point lol. I've seen crews swap out cutterheads for a ripper style or even just a rock wheel on the same machine and it fixes the whole jamming issue without needing to change to a twin screw. Plus if your rock is fractured or layered, a different tooth pattern can chomp through it way cleaner than just blaming the machine type.