Darren Groves Posted November 12, 2014 Report Share Posted November 12, 2014 Further to my recent post about fitting an OD Gearbox of unknown condition, it did turn out to have a couple of weak synchro rings. As all the new stuff around is of dubious quality I have bought some OE used items, so my question is how to you identify a good one from a not so good one? Or is it a matter of trial and error? Link to comment Share on other sites More sharing options...
rlubikey Posted November 12, 2014 Report Share Posted November 12, 2014 I watched a well known gearbox builder rebuild Red Spit's. He had a bag full of syncro rings and must have spent half an hour just putting different ones together and feeling how they ... well, how they felt! He swapped them round, rejecting some instantly, keeping others and swapping them round until he was satisfied. Even then he would go back and try and improve on what he had. My observation was, it's all in the feel and there's no substitute for experience! (Not much help to you, I know) Richard Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 12, 2014 Report Share Posted November 12, 2014 you should wring the baulk ring onto the cone with a good firm rotational grip, it should grab the cone and lock on there should be a gap between the ring and the dog teeth, the gear dog teeth must have a well defined 55deg angle chamfered on the end of the dog tooth, and a same on the sliding sleeve its these angles that allow baulk and rock over when synchronised, if all rounded, blurred and chimbled look for some replacements make sure you get the correct springs in the sleeves 1/2 is different to 3/4 easy to make too weak or too strong.if mixed up. regards Pete Link to comment Share on other sites More sharing options...
Darren Groves Posted November 12, 2014 Author Report Share Posted November 12, 2014 you should wring the baulk ring onto the cone with a good firm rotational grip, it should grab the cone and lock on there should be a gap between the ring and the dog teeth, Thanks for the replies. Pete - I did test the above, all locked nicely with a good air gap between, which was the main reason for fitting it without doing any work. Think I'll buy up any OE synchro rings I come across and take everything up to Mike Papworth. Link to comment Share on other sites More sharing options...
Darren Groves Posted November 12, 2014 Author Report Share Posted November 12, 2014 Anyone tried this supplier for Synchro Rings http://r.ebay.com/UQlf1A they claim to be of superior quality. Link to comment Share on other sites More sharing options...
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