I am (yet) another newbie and am in the throes of attempting to restore my grandfather’s JP Super. Three questions, for now:
1 Is there any way of dating these machines, whether from the cast/stamped numerals and letters on the side frames or otherwise? On mine there are cast into the right-hand frame (viewed from behind the handlebars) ‘DD’ and ‘19-1-12’, whilst stamped on the left-hand frame is ‘2 H/B 4’ (see pics 1 & 2).
2 Does anyone know the outside diameter of the front rollers? The originals on mine rotted away and I have ordered replacements based on a guesstimate of 3.5” but the chap who has made them says they look quite large and they might have to be reduced.
3 How does one remove the spindle which carries the front rollers?! On the outsides of the frames there are circular things with flattened sides (pic 3) which I thought might be threaded but attempts to undo them have proved futile. On the insides there are what might be pins (pic 2 again) and I wonder whether it is these that need to be removed?
All and any guidance will be gratefully received.