The CIH OEM and the TSR choppers both replace the beater assembly. The Redekop is mounted lower and processes both the straw and chaff. Redekop chopper can be seen at www.redekopmfg.com.
The drive for the beater doesn't run fast enough to cut the trash like it should.Also the 6-sided belt that runs the beater would never take the abuse a chopper would give it.It needs it's own dedicated drive.