1 Tank lugs are fitted from inside. The tricky bit is stopping it falling into the tank when you melt the solder; supporting it with a bracket keeps it in place.
4 Pre 1937 tank (right) has a short outlet stub to clear the brake rod. Post ‘37 has the brake on the other side.
7 You need to fit the gearbox tin cover, then the oil tank and then offer up the battery tray to work out the exact position of this clamp. Nip up the bolt.
8 To secure the tray at the top, these two cone spacers are used. They fit between the rails acting as a clamp between the two tubes.
2 The Rudge oil filter is housed in a steel tube. The cap fits over the filter forcing oil out through the felt. A spring-loaded disc on top offers pressure relief.
5 When I built my bike I was puzzled at the lack of brackets on the frame for the saddle, oil tank etc.
9 What a palaver! But as with most of Rudge’s nutty ideas, it does work and is pretty secure. With a heavy battery I’d want to check bolt tightness regularly though…
3 Cork washer on the bottom of the filter housing prevents the tank’s content getting into the return pipe and filling the sump with oil.
6 The saddle is held with a U clip, the oil tank has these two sensible clips, but the battery tray is... more complex.