 
			
			 
			
			Such a pitty you guys are so far away, must get Wheeze out for a ride... and good Toffer, once he has recovered from the horror that is his leg...
 
			
			Al, your front will no doubt be 53/39 and the Ribble Sportive may be somthing like 13-26. Count the teeth on the big & little sprocket.
 
			
			 
			
			 
			
			13-26 is aimed at the 'Sportive' events with hills as a 39/26 bottom gear should see somebody with good fitness over most hills. A race or 'tight' block is 11-21 so geared higher for flat/downhill speed.
 
			
			 
			
			 
			
			