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| Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc... | 
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		#11 | 
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			 Porting Master 
			
			
			
			Join Date: Mar 2009 
				Location: North Jersey, USA 
				
				
					Posts: 154
				 
				
				
				Rep Power: 17 ![]()  | 
	
	
	
		
		
		
		 
			
			on my own personal 13B I tried roller bearings on the front and rear stationary gears over 6 years ago. there is pros and cons..
		 
		
		
		
		
		
		
		
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