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					Originally Posted by  sparkycuda
					 
				 
				Don't think you miscalculated on the weight/balance concern.  The real dozer has a massive counterweight when not equipped with a ripper.  The 1:1 machine is very nose-heavy without either. So, maybe just about right! 
 
Ken 
			
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 HI Ken 
i think your right, i added some crude weight to the back and its rolling a lot better on the tracks now. Plus i added some stiffer rate springs to the tensioner and that seems to help as well.  I have started the ripper now so should have it attached in a couple of weeks.  
in the mean time i added some details to the blade:
must be like strengthening bars on the side of the blade 
My own version:
I will take some pics to give a sense of size later today maybe with a can of coke or something but blade is about 500 mm wide ( 21 inch) x 250 high (10inch) 
Rob