Cooling on all of these Super Vees looks strange to me.
It would be interesting to see how 2023 examples of these cars provide cooling. For the Kottulinsky car, it would have been sensible to tape over non-functional inlet ducts on the body 51 years ago.
I might be wrong, but it seems to me that in 1971, Super Vee retained the fan (at least most of them...) but in 1972 there was a change to direct wind cooling. Compare the photos I published in the Super Vee thread from the 1971 German GP with the photos in this thread. In the 1971 thread there are no signs of air intakes or hoses, while here in the 1972 thread, all cars have some kind of "ram" air intake. I don't have the regulations readily available, so I don't know if this was a change in regulations, or if someone tried to run withouth the fan and others followed.
I started racing in the "normal" Formula Vee 1300 in 1973. In that year there was a change of regulations for FVee in Europa allowing the removal of the fan (among other changes almost making the 1300 FVee engine a smaller copy of the 1600 Super Vee). Problems we had with the wind cooling was that cylinder barrels tended to crack, which led to quite a lot of experimentation as to what the optimal cooling air intakes should look like.