drake Posted May 10, 2015 Report Share Posted May 10, 2015 Firstly who does this conversion? Secondly what's involved. i read here that the stanchions are machined down. Why if it's 35mm into 35mm? What's the bit about bondong/gluing them. I have basic engineering skills, so wondering why I can't do this myself? Thanks Quote Link to comment Share on other sites More sharing options...
feetupfun Posted May 10, 2015 Report Share Posted May 10, 2015 I think it is the sliders that are machined rather than the staunchions The Norton sliders are machined to a larger ID The modern sliders OD are machined down to fit inside the Norton sliders (and held there with glue) Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted May 10, 2015 Report Share Posted May 10, 2015 Give it a go Drake as you say you have basic engineering skills so should be ok. Quote Link to comment Share on other sites More sharing options...
esuark Posted May 10, 2015 Report Share Posted May 10, 2015 hmm.... Quote Link to comment Share on other sites More sharing options...
totalshell Posted May 10, 2015 Report Share Posted May 10, 2015 many old men in sheds the length and breadth of the country do it.. like most things some better than others and some properly some not very well.. the use of new mazzochis will stop fairly quickly now that production has halted so all those old fantics will soon be missing thier legs as well as their top yokes only a brave and skilled fella would attempt to do his own and he d have to have access to norton sliders.. find em if you can and dont ask the price.. then put them in a lathe and take metal from the bore to fit in the legs from your fantic forks that you have machined down to a couple of mm or thinner.. then put the two together cant be hard.. so cant be that expensive can it.. Quote Link to comment Share on other sites More sharing options...
drake Posted May 11, 2015 Author Report Share Posted May 11, 2015 Well I have some Roadholder sliders After a bit of research, what I think that you do id machine down the Marzocchi sliders so that they fit tightly inside the Norton ones. Then bond them together. Mmmm Seems easy enough Quote Link to comment Share on other sites More sharing options...
davetom Posted May 11, 2015 Report Share Posted May 11, 2015 Try Alan Whitton,(01246 419805)it's not a job for the amateur or for the semi-pro for that matter, quite easy to end up with shiny scrap metal on the floor next to the lathe. He did a great job on mine, and many others no doubt Quote Link to comment Share on other sites More sharing options...
drake Posted May 11, 2015 Author Report Share Posted May 11, 2015 Can't get hold of him? What I don't understand is if the Norton Stanchions are 35mm and the new bits are 35mm, then why turn down the new slider, wouldn't it be easier to just make new bushes or fit the new stanchions in to the Roadholder bottoms? Quote Link to comment Share on other sites More sharing options...
alan Posted May 11, 2015 Report Share Posted May 11, 2015 (edited) Norton are 1 3/8 " . The aim is to get the damping and seal arrangement of the more modern fork with the appearance of the old fork. Norton or AMC sliders are normally used as they are a bigger diameter than Triumph or BSA. The "easiest" way is too machine the OD of the more modern fork slider down so that it fits inside the Norton or AMC slider. There are people now casting new Norton style legs and others machining Triumph style legs from billet to take 35 mm stanchions,bushes, dampers and seals directly. Edited May 11, 2015 by alan Quote Link to comment Share on other sites More sharing options...
alan Posted May 11, 2015 Report Share Posted May 11, 2015 Norton are 1 3/8 " . The aim is to get the damping and seal arrangement of the more modern fork with the appearance of the old fork. Norton or AMC sliders are normally used as they are a bigger diameter than Triumph or BSA. The "easiest" way is too machine the OD of the more modern fork slider down so that it fits inside the Norton or AMC slider. There are people now casting new Norton style legs and others machining Triumph style legs from billet to take 35 mm stanchions, dampers and seals directly. Quote Link to comment Share on other sites More sharing options...
davetom Posted May 11, 2015 Report Share Posted May 11, 2015 (edited) New stanchions are quite a bit longer than Norton ones, alloy extensions are used where the old chrome fork seal holders would go. Alan probably couldn't hear over the noise of lathes, millers etc but I'd persist, he's 'the man' Edited May 11, 2015 by davetom Quote Link to comment Share on other sites More sharing options...
woody Posted May 11, 2015 Report Share Posted May 11, 2015 (edited) It's Alan who had the new fork sliders on his stand at Telford and they can be had with different size bushes to take different diameter stanchions. Looked very nice and very reasonably priced as far as I know. Much better solution than ruining two pairs of forks just to make one. As mentioned above, you just fit your stanchions straight in. Edited May 11, 2015 by woody 2 Quote Link to comment Share on other sites More sharing options...
charlie prescott Posted May 11, 2015 Report Share Posted May 11, 2015 Hi Guy's, Why???? Why???? Why???? OH. Why????????? Is the world now gone mad???? Forks are forks and do the job on the front end. So do all the modern rear shocks have to look like "Girlings"???????????? Charlie. Not amused. "Britshocks" for ever!!!! 2 Quote Link to comment Share on other sites More sharing options...
axulsuv Posted May 12, 2015 Report Share Posted May 12, 2015 And I need 35mm for my FANTICS !!! AKA STOCK !!!! 3 Quote Link to comment Share on other sites More sharing options...
drake Posted May 12, 2015 Author Report Share Posted May 12, 2015 Forks are for a pre60 motocross bikes and they have to be or look like period parts. hence the Norton sliders. Cerianis etc are not eligible Quote Link to comment Share on other sites More sharing options...
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