Having just spoken to my good buddy who used to holiday with me at the TT, he reminded me of the morning Bob MacIntyre did the first unofficial 100mph lap on the Gilera.
We were at Kates, and we heard that bike all the way to Signpost! Fabulous sound and fantastic rider. So cool he even made eye contact as he passed as we were hanging over the bank trying to take photos. (Would not be allowed to do that today!)

Having said all this about the multi cylinder Japanese & Italian screamers, can you beat the sound and smell of a Manx, 7R or G50 through Glentrammon with Hailwood, Minter or the very underated Alan Shepherd on board?
I guess that the flying plumber and I are of an age, ( my first TT was 1954) so consider myself very lucky as through the 60's we saw all the works teams battling it out, and in those days you knew who was coming down the road by the sound of the bike as they were all so differant. Happy days. But I still get the same thrill now. Must be something in the Manx air....