Finally spare parts for the ST50ST60 WIND mast unit are available!
SVB should also offer a service to overhaul old mast units. After 20-30 years, the two ball bearings are usually also affected. When removing, the O-rings should be replaced immediately. Ralf can contact me regarding possible sources of supply and order numbers.
INSTALLATION INSTRUCTIONS AND CALIBRATION DETAILS MISSING
Since the new wind vane has a flattening, but the old one has a round hole, the new vane can only be made ready for installation by drilling it open, or the shaft has to be ground on one side, but where? Can the device be recalibrated afterwards?