We had intended to use a chrome coil on the frame behind
the carbs but the plugwires just did not look right running
below the frame, so we decided to hide a mini-coil on top of
the frame that would be hidden by the tank. As the coil was
higher than the rear of the tank we started by notching the
Aad welded a 5 mm thick strip in the notch to make sure the
frame was not weakened, and now the coil fit very nicely. We also
cut off the mounting ears from the coil to make it even smaller.
From some pieces of sheetmetal we fabricated a housing to be
welded in the tunnel of the tank, the plan is to make the coil
completely invisible once the bike is finished. Ofcourse making
things look simple can be quite complicated!
The little coil housing was very carefully welded
to make sure there will be no fuel leaks near the coil, as that
would be a recipe for disaster, haha. Then we cut a hole in
the tank tunnel and welded the housing in place. Now we needed
to figure out how to get the plugwires from the coil to the
We took a piece of square tubing and cut out a section from
the middle leaving it just big enough for 2 plug wires, then drilled
the frame and filed the holes just big enough to tap the rectangular
tube through. We got quite a lot further than this but I will
show you the rest next time..