smelling123 Posted April 17, 2010 Report Share Posted April 17, 2010 (edited) Hi, Just bought a Bulto Sherpa 250, engine/frame number is 19000*** can anyone help? I think its 1975? Also, what would be suitable gearing for trials (its the 520 type chain) - its got 11t X 39t at the moment - is that OK? many thanks Stu Edited April 17, 2010 by smelling123 Quote Link to comment Share on other sites More sharing options...
sfield Posted April 17, 2010 Report Share Posted April 17, 2010 Try this link http://www.clubbultaco.com/ident.htm. Model 190 shows 1977/78. There is a forum Bultaco M80 Sproket sizes on this site, which agrees with with Haynes Manual 11/46 on a 520 chain. I have a 198 which has the 11/46 and seems ok. Have fun. Steve Quote Link to comment Share on other sites More sharing options...
smelling123 Posted April 17, 2010 Author Report Share Posted April 17, 2010 Many thanks Steve, very useful. cheers Quote Link to comment Share on other sites More sharing options...
davieboy Posted April 17, 2010 Report Share Posted April 17, 2010 I have a model 190 from 1977. I use 12/46 and find it works well. Quote Link to comment Share on other sites More sharing options...
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