firesub1 Posted November 2, 2014 Report Share Posted November 2, 2014 Hi, I am thinking my of buying a 2013 Evo 200, the bike is immaculate and does not appear to have done much at all although the bike sounds to have a rattle around the top end, can anyone shine any light on the subject Quote Link to comment Share on other sites More sharing options...
ham2 Posted November 2, 2014 Report Share Posted November 2, 2014 I'm willing to be corrected by a Beta-ist but from what I've learned the 200 is based originally on a 125 and, amongst other revisions, has a bronze bush small end in the piston instead of a needle bearing. This might make the 200 prone to exhibit a mini-ratttle...sorry I'm not sure how serious it could be. Quote Link to comment Share on other sites More sharing options...
technowaldo Posted November 2, 2014 Report Share Posted November 2, 2014 No 125 has a needle roller for the small end Quote Link to comment Share on other sites More sharing options...
greychapel Posted November 2, 2014 Report Share Posted November 2, 2014 thought 200 was a sleeved down 250 (iron liner) and I have heard they are a bit noisier on the top end, I have one and I would describe it as more of a rustle than a rattle Quote Link to comment Share on other sites More sharing options...
ham2 Posted November 2, 2014 Report Share Posted November 2, 2014 thought 200 was a sleeved down 250 (iron liner) and I have heard they are a bit noisier on the top end, I have one and I would describe it as more of a rustle than a rattle No 125 has a needle roller for the small end ...err , the only bit I'm sure about is that the 200 has a bush instead of a needle bearing...and I think that's where the noise comes into it? Quote Link to comment Share on other sites More sharing options...
greychapel Posted November 2, 2014 Report Share Posted November 2, 2014 would a bush thats not worn rattle ? whether bush or bearing if its worn it will rattle if not it shouldn't I though t the 200 had slightly more piston clearance due to the iron liner. I think Nigel Birkett developed the 200 originally so he would be the man to ask. Quote Link to comment Share on other sites More sharing options...
dadof2 Posted November 2, 2014 Report Share Posted November 2, 2014 (edited) Some BETA 200s do make more top end / barrel area noise than you might expect even when all clearances are correct and nothing is worn. They can sound like a "bag of nails" yet still run well and pull very strongly. Edited November 2, 2014 by dadof2 2 Quote Link to comment Share on other sites More sharing options...
technowaldo Posted November 3, 2014 Report Share Posted November 3, 2014 ...err , the only bit I'm sure about is that the 200 has a bush instead of a needle bearing...and I think that's where the noise comes into it? Quote Link to comment Share on other sites More sharing options...
technowaldo Posted November 3, 2014 Report Share Posted November 3, 2014 ...err , the only bit I'm sure about is that the 200 has a bush instead of a needle bearing...and I think that's where the noise comes into it? Quote Link to comment Share on other sites More sharing options...
technowaldo Posted November 3, 2014 Report Share Posted November 3, 2014 Well when I rebuilt my sons 2010 125 it had a needle roller Quote Link to comment Share on other sites More sharing options...
ham2 Posted November 4, 2014 Report Share Posted November 4, 2014 Some BETA 200s do make more top end / barrel area noise than you might expect even when all clearances are correct and nothing is worn. They can sound like a "bag of nails" yet still run well and pull very strongly. Yeah, what he said I was trying to be too tactful methinks. Well when I rebuilt my sons 2010 125 it had a needle roller I hear ya, I'm not disputing that. Quote Link to comment Share on other sites More sharing options...
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