Funny that Yamaha`s 1st big 4T was their version of a 650 BSA [same bore x stroke], then they went to a mechanical monstrosity, the TX 750 to create a Commando imposter, a TX 500 would be Triumph Daytona [also unreliable], A BSA B50 copy [oil in frame, even] XT/TT/SR 500 single, a Trident copy, the fat [also unreliable] XS 750 triple, & even a wannabe Vincent, the XV 1000...was the XS1100 inspired by the Quadrant?