Driving impression: Vicon RV2190 Balepack round baler/wrapper Launched at the end of last summer, there are some important specification differences between Vicon’s RV2160 and 2190 variable-chamber round balers and the RV1601 and 1901 machines that they replace. On one of this season’s better afternoons, Martin Rickatson made some silage with the combi baler/wrapper version of the RV2190 to see what has changed