Work began on the various sheetmetal parts (known in VW vernacular as “tins”) that direct air to and through the cylinder cooling fins. Being aircooled instead of watercooled, this is one area where the bus has much more in common with a modern light aircraft than any modern road vehicle. These parts are all thin steel and have been exposed to years of extreme vibration and temperature fluctuations; because of this there were many stress cracked spots that required welding.
