murrayec Posted November 18, 2017 Author Share Posted November 18, 2017 (edited) Break gear coming together Shoes cut out of Delrin for insulation purposes and the hangers from .5mm brass Hangers marked out and holes drilled ready for cutting out All the bits, including guard irons from .5mm brass, the fire grate front n sides and a little bit of grate detail in .5mm brass with rivets punched Break shoes pinned onto the hangers, 1.2mm brass tube with .6mm id soldered into the chassis to take .6mm pins to hang the breaks off Breaks test erected and joy-rigged at the lower end to work out the longitudinal break lever arms and cross fittings..... next Eoin Edited November 18, 2017 by murrayec 1 1 2 Quote Link to comment Share on other sites More sharing options...
Noel Posted November 18, 2017 Share Posted November 18, 2017 Just Amazerballs. Eoin you should be heading up the engineering division of the next SST project. Your engineering talents, design intelligence and resourcefulness know no bounds. 2 Quote Link to comment Share on other sites More sharing options...
murrayec Posted March 2, 2020 Author Share Posted March 2, 2020 Just noticed when looking over this thread, after a long time, I describe the material for the break shoes as 'Delrin' it's not! it's Tufnol, a great material for the modeller. Made from wood/paper, it has great structural qualities, easy to be worked and can be machined. Eoin 3 1 Quote Link to comment Share on other sites More sharing options...
Broithe Posted March 2, 2020 Share Posted March 2, 2020 58 minutes ago, murrayec said: Just noticed when looking over this thread, after a long time, I describe the material for the break shoes as 'Delrin' it's not! it's Tufnol, a great material for the modeller. Made from wood/paper, it has great structural qualities, easy to be worked and can be machined. Eoin When I had a 'real' job, these materials were in widespread use We also had Paxolin and Permali, plus quite a few other more 'modern' composite materials. Permali was particularly nice - resin impregnated beechwood plies. It is fantastically tough - and takes a beautiful finish. Tufnol always struck me as a sort of artificial boxwood substitute, in the way that its properties were not directional at all, and it was so 'fine-grained' that almost any size/shape combination would be OK. 2 Quote Link to comment Share on other sites More sharing options...
PorkyP Posted March 2, 2020 Share Posted March 2, 2020 Tufnol is a great material, there's some used in the steering of the old Land Rover, and that takes some hammering..! Quote Link to comment Share on other sites More sharing options...
Broithe Posted March 2, 2020 Share Posted March 2, 2020 You may have come across Dave Gorman the comedian? I worked with his father, who I remember being a huge fan of Tufnol, to the point where it almost became a running gag in itself, long before his boy took up joke-telling for a living. 1 Quote Link to comment Share on other sites More sharing options...
murrayec Posted March 2, 2020 Author Share Posted March 2, 2020 I can just see you now- sitting around the billy can slurping the tae and swapping Tufnol jokes those were the days....... Eoin 1 3 Quote Link to comment Share on other sites More sharing options...
Galteemore Posted March 2, 2020 Share Posted March 2, 2020 (edited) Yes. Little known fact that the Dubliners’ hit ‘the hot asphalt’ was originally titled ‘the hot Tufnol’.... ’And if it doesn’t last for ever sure I swear I’ll eat me hat’.... kudos for a connection to Dave Gorman, though. And I have been looking up Tufnol to make brake blocks - laminating brass ones right now which I hate! Edited March 2, 2020 by Galteemore 3 Quote Link to comment Share on other sites More sharing options...
PorkyP Posted March 2, 2020 Share Posted March 2, 2020 I'm going to have to go and listen to some Dubliners now you've put that idea in me head... 2 Quote Link to comment Share on other sites More sharing options...
Broithe Posted March 3, 2020 Share Posted March 3, 2020 4 hours ago, murrayec said: I can just see you now- sitting around the billy can slurping the tae and swapping Tufnol jokes those were the days....... Eoin He once had a twenty minute violent agreement with a chap, until I could stand no more and shouted at them until they finally understood that they were both saying exactly the same thing, but from opposite directions. There is an amusing materials-based story involving asbestos, but I'll have to tell you that verbally one day, as it's not suitable for a public scenario... 1 2 Quote Link to comment Share on other sites More sharing options...
David Holman Posted March 5, 2020 Share Posted March 5, 2020 I thought he was an England spin bowler... 1 Quote Link to comment Share on other sites More sharing options...
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