Yamaha XS650

CYCLE WORLD magazine June 1980

Yamaha 650 owners tell us their machines are motorcycles. “You remember motorcycles.  They have a pulsating throb instead of an electric motor whir …. They’re narrower than your car …. You can actually adjust the valves without removing the camshaft. Just one camshaft? …. gas tanks with curves instead of bends ….  a strange looking lever on the side you can kick to make it run …. something you’d feel uncomfortable wearing a suit and tie on …. They let you park it with the Harleys down at the tavern.”

Yamaha TX650 80

 

XS 650 Tech Pages

Craigs List xs650

XS650 Improvement Advice

 

 

 

Team Junk

Old Brown

1978 hemderson tx

Old Brown in her heyday.

 

 

 

 

 

 

 

 

 

 

XS 650 Gearing

 Common Gear Ratios
Front Rear     @8000            
sprocket sprocket     mph   RPM @ 60 RPM @ 80 RPM @ 100 RPM @ 120  
17 34 2   120   4000 5333 6667 8000 1
 
17 32 1.88   128   3765 5020 6275 7529 0.94
 
17 30 1.76   136   3529 4706 5882 7059 0.88
 
18 32 1.78   135   3556 4741 5926 7111 0.89
 Complete Gear Ratio Table
Front Rear @8000
sprocket sprocket mph RPM @ 60 RPM @ 80 RPM @ 100 RPM @ 120
17 34 2.00 120 4000 5333 6667 8000 1.00
17 36 2.12 113 4235 5647 7059 8471 1.06
17 38 2.24 107 4471 5961 7451 8941 1.12
17 40 2.35 102 4706 6275 7843 9412 1.18
17 32 1.88 128 3765 5020 6275 7529 .94
17 30 1.76 136 3529 4706 5882 7059 .88
17 28 1.65 146 3294 4392 5490 6588 .82
17 26 1.53 157 3059 4078 5098 6118 .76
18 34 1.89 127 3778 5037 6296 7556 .94
18 32 1.78 135 3556 4741 5926 7111 .89
18 30 1.67 144 3333 4444 5556 6667 .83