FAQ Monday - Norton Drawing Issues

Sometimes we make an item like the #NortonCommando barrel and find some of the drawing tolerances aren't quite right. Ash talks you through this recent discovery and how it can be easily corrected at home by you. [00:00] Introduction by Ashley from Andover Norton [00:13] The recent issue: Cracked cylinder barrels where the tappet/follower anti-rotation plate fits [00:47] The engineering conflict: 1/8 inch milling cutters vs. parts ground precisely to 0.125 inches [01:17] Tool wear issues: How a wearing machining cutter reduces slot width below tolerance [01:44] The danger of hammering a tight plate into cast iron (and why it causes the barrel to snap) [02:02] Pro-tip: How to hand-finish a tight plate using wet-and-dry paper on a surface plate for a nice sliding fit [02:30] Speculation on historical assembly: Did 1970s Norton factory workers hand-file parts down the line? [03:04] Other historical hand-finished parts (e.g., vintage oil pump gears checked inside bodies) [03:27] Replicating original 1970s drawing errors in modern reproduction manufacturing [03:47] Advice on reusing original plates vs. fitting new replacement plates into tight slots [04:08] Outro and contact information for Ashley and Simon [04:23] Announcement for the Andover Norton open day on June 6th We're Andover Norton and we love bikes, especially classic Nortons. We are the world's biggest cache of spare parts for Norton motorcycles. We sell more Norton Factory Spare Parts for Norton Commandos, Dominators, and other models than anybody else in the World. All our parts are to factory drawings- beware of imitations and false claims! How to - email reminders :    • How To Set Up Your Back In Stock Email Rem...   Find us here : Facebook :   / andover.norton   Instagram :   / andovernorton   Twitter :   / andovernorton   Website : https://andover-norton.co.uk/en Email : [email protected]