It seems all too often that an otherwise good magneto is let down by a failed coil. Recently with an idea suggested on Facebook I was spurred to try a BSA Bantam coil in a Wico A This has proven to be successful so far. Firstly the core has to be reduced in size by filing the rivet ends off and removing 5 plates Carburation is a bit off but just to test the mag runs OK It's also possible to use a Wipac CJ coil with the HT contact adaptation.
