22-08-2017, 12:11 AM
I am trying to sort out the rear axle half shaft changes for Spares.
From my notes the axle diameter at the differential casing end was increased from the original Axle No BO 18 at 7/8" to Axle No BO 128 at 57/64" from Chassis 126384 (excluding 126386 and 126467 to 126470) I believe Chassis 126384 was produced at Longbridge January 1931.
The diff case bush were also changed from BO23 to a larger bore BO129 to suit. As far as I understand there were no other case changes.
When the Axle half shaft diameter at the differential casing end increased from 7/8" to 57/64" in 1931, the 'List of Production Changes' shows the Axle length as 22 1/2". (our Spares List shows 22 1/8")
Our 'Spares List' also lists the longer Axle half shaft at 23 1/2" long coming in at 1932, but the 'List of Production Changes' doesn't specify a half shaft length, only noting the new 'D' type rear axle introduced in September 1932. The 'Austin Spare Parts' book shows this new Axle half shaft as BO136.
I would like help confirming the Half Shaft length details.
Cheers Tony.
From my notes the axle diameter at the differential casing end was increased from the original Axle No BO 18 at 7/8" to Axle No BO 128 at 57/64" from Chassis 126384 (excluding 126386 and 126467 to 126470) I believe Chassis 126384 was produced at Longbridge January 1931.
The diff case bush were also changed from BO23 to a larger bore BO129 to suit. As far as I understand there were no other case changes.
When the Axle half shaft diameter at the differential casing end increased from 7/8" to 57/64" in 1931, the 'List of Production Changes' shows the Axle length as 22 1/2". (our Spares List shows 22 1/8")
Our 'Spares List' also lists the longer Axle half shaft at 23 1/2" long coming in at 1932, but the 'List of Production Changes' doesn't specify a half shaft length, only noting the new 'D' type rear axle introduced in September 1932. The 'Austin Spare Parts' book shows this new Axle half shaft as BO136.
I would like help confirming the Half Shaft length details.
Cheers Tony.