kenthetuner2 Posted June 12, 2020 Report Share Posted June 12, 2020 Help please. I need a new simplex primary chain for my 250 sherpa. In Motion are out of stock is there any where else I can get one? Quote Link to comment Share on other sites More sharing options...
Flooky3 Posted June 13, 2020 Report Share Posted June 13, 2020 Got one years ago from sammy Miller's.still have it in bag.bought it for a 198b.if you still struggle to find one, let me know,hope I dont need it Quote Link to comment Share on other sites More sharing options...
bullylover Posted June 13, 2020 Report Share Posted June 13, 2020 You might also try Bultaco Australia or Classic Bultaco in the USA. There would also be a few suppliers in Spain. 1 Quote Link to comment Share on other sites More sharing options...
b40rt Posted June 13, 2020 Report Share Posted June 13, 2020 You might be able to buy a length of chain of the correct dimensions and make one. Chains like Regina can be made endless as the pins press in/ out. 1 Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted June 14, 2020 Report Share Posted June 14, 2020 Measurements taken at one original 199B chain Roller dia: 5.0 (4.98mm) Pitch: 9.5 (9.46mm) Inside width: 7.5 (7.52mm) No of rollers: 52 Clutch chainwheel width is 6.95mm 1 Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted June 14, 2020 Report Share Posted June 14, 2020 (edited) Unusual dimesion? Found it: https://joresa.com/en-gb/about Pitch should be 9.52 (3/8) Roller dia should be 5.08mm Edited June 14, 2020 by carl ekblom Quote Link to comment Share on other sites More sharing options...
Antonio Posted June 14, 2020 Report Share Posted June 14, 2020 The Joresa is not as it use to be, today the company importa Chinese product of bad quality, it is a big problem as there is not a quality chain available, this is probably the reason why In motion does not have the chain available. Gentlemen I think we have a big problem! Regards Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted June 14, 2020 Report Share Posted June 14, 2020 A more and more common problem? These people seem stock some https://www.francetrialclassic.com/en/engine-spares/68-bultaco-sherpa-250-350-primary-transmission-chain.html Perhaps Spanish? Quote Link to comment Share on other sites More sharing options...
woody Posted June 14, 2020 Report Share Posted June 14, 2020 In Motion use chains sourced in the UK, they are waiting for the supply chains to open again following lockdown I think France Trial Classic are out of stock also Quote Link to comment Share on other sites More sharing options...
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