No, pretty much all airheads have a sweet spot around that speed (except maybe the R65)
People say at that speed the bikes "talk to you".
The R80 was fine but us Americans must have big, big, big.

Classic Cycle Connection
1971 R75/5 roadracer
1973 Kawasaki Z1 roadracer
1976 BMW R75/6
1976 Triumph 750 Bonneville
1999 BMW R1100RT
2007 Kymco People 200S