I've had trouble finding some Simplex jockey wheels for the rear mech, they're virtually unobtainable and I'm not paying £25 for a set.
@carlosfandangus very kindly sent me a Sachs rear mech which although didn't fit the mech hanger, the jockey wheels were in really good shape and the centre holes were not far off, so I got the Elvish back down off the shelf and did some home bodgery
	
		
			
		
		
	
		
		
	
	
		 
	
	
		
			
		
		
	
As you can see not quite the same but not far off.
	
		
			
		
		
	
		 
	
	
		
			
		
		
	
So I just drilled them out slightly and used the Simplex shim and washers, bolted it up and it works really well!
	
		
			
		
		
	
		 
	
	
		
			
		
		
	
Next job is to find a replacement 550A rim or complete rear wheel, Ebay France have the odd wheel but it's difficult persuading some buyers to post to the UK
	
		
			
		
		
	
			
			@carlosfandangus very kindly sent me a Sachs rear mech which although didn't fit the mech hanger, the jockey wheels were in really good shape and the centre holes were not far off, so I got the Elvish back down off the shelf and did some home bodgery

As you can see not quite the same but not far off.
So I just drilled them out slightly and used the Simplex shim and washers, bolted it up and it works really well!
Next job is to find a replacement 550A rim or complete rear wheel, Ebay France have the odd wheel but it's difficult persuading some buyers to post to the UK
			
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