rusty ken Posted August 5, 2018 Report Share Posted August 5, 2018 Most of the photos and parts manuals for my G3LS Matchless show the front wheel fitted so the brake drum is on the near/left hand side. But on a number of photos, including the works Matchless and AJS, the wheel has been reversed so the brake drum is on the right. I'm hoping someone out there can enlighen me on why the different approach? Quote Link to comment Share on other sites More sharing options...
thai-ty Posted August 5, 2018 Report Share Posted August 5, 2018 Negative photograph in a reverse mirror image? Quote Link to comment Share on other sites More sharing options...
rusty ken Posted August 5, 2018 Author Report Share Posted August 5, 2018 2 hours ago, thai-ty said: Negative photograph in a reverse mirror image? Thanks for the suggestion, good idea. I've scanned back through the photos and the tank badges and reg numbers haven't reversed, so it must be something else, but no decent idea on what? Quote Link to comment Share on other sites More sharing options...
dick Posted August 5, 2018 Report Share Posted August 5, 2018 Roy Bacon's book shows brake diameters of 6 1/2", 7" & 8" for road bikes, 6 1/2" & 7" for the comp bikes & 5 1/2 " for trials bikes. Not easy to judge the sizes in a pic. They probably pinched a lighter hub off something with brake drum on other side. All sorts of strange things happened in those days. Dick. Quote Link to comment Share on other sites More sharing options...
pjw123 Posted April 10, 2020 Report Share Posted April 10, 2020 Near (LHS ) side best location for your drum as the cable run to lever follows a progressive curved route which copes well with fork compression. (same as modern disc brakes). Most later bikes with drum brakes use this format, (Bultaco is one notable exception, just check out the strange cable bends on them). Quote Link to comment Share on other sites More sharing options...
dick Posted April 10, 2020 Report Share Posted April 10, 2020 Fit it on the side that has the retaining arm fitting, which needs to be in TENSION, NOT COMPRESSION. Quote Link to comment Share on other sites More sharing options...
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