05-06-2021, 04:59 PM
It appears from the handbooks that the cylindrical vacuum wiper was fitted from1926 until 1934, and in my experience it was only of Lucas manufacture on cars I have examined. Among my motors I also have cylindrical Trico design. Back in the 1960s I can remember seeing A7s with the Trico semi-circular design as used on Y type Fords, but I believe this was only as a replacement.