In last month’s Classic Bike I wrote a bit about Rudge gearboxes as part of the feature I’m doing on restoring a 1937 Special. But there wasn’t really enough space to do the subject justice so I said I’d put a more in-depth look at it on here. Last week Roger Murray emailed to say he hadn’t managed to find anything about it, so I thought I’d better get on with it! What actually happened was this, that particular issue was a bit…