Having trouble

Published: 07:30AM Apr 5th, 2013
By: Web Editor
Roger Cooper you are not alone (TCM, March 2013, p21). Seduced by their cheap price and pretty blue colour I too purchased a brace of Wipac plugs for my Douglas Mk.V in the 1950s
Having trouble

I had not gone far when I had to abort my trip because one cylinder had cut out and the other was misfiring.

When I got home I removed the plugs to find that one side of the central electrode was touching the outer, shorting the plug completely, and the other plug had a gap closed up significantly. I was working as a ceramist at the time so took the offending plugs in to work and examined them under a high powered microscope to discover hairline cracks in the insulators on both plugs, in one case running the entire length of the ceramic body, which is the reason the central electrodes had moved. I also moved back to Champion plugs.

Visitors to my neck of the woods should take a trip up the old Route Napoleon for about 50 miles where they will find the ancient walled city of Entrevaux which, among other things, sports a small but well stocked motorcycle museum in which they will find two old Belgian FNs, a brace of Henderson fours, plus old Harley-Davidsons and Indian V-twins etc.

Entry is free, although you may make a donation to the upkeep of the museum.

Also, some might find it of interest to look up BFG motorcycles on the internet. Starting in 1977 it made interesting bikes using Citroen car engines for about 10 years.

Mike Gaze, Levens, near Nice, France

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