Monday, March 15, 2010

Coils


I decided to use a "matched pair" of coils from Hot Spark out of TX as an ignition system upgrade. Which according to the manufacturer are for "1970-1980 BMW R-Series Motorcycles with original points-based ignition system with two Bosch 6-volt coils, wired in series (for 12-volt electrical systems)." The 700 uses two Bosch 6 volt coils wired in series in a 12 volt system, they are just much smaller than what was used on an R-series airhead a decade later. I will probably also upgrade the condenser to one from a R-series bike of that era to ensure max performance in the system. Otherwise the ignition components will remain stock. I feel a little bad replacing the originals as they are beautiful pieces of art in their own right, but we NEED extra power wherever we can find it and this is a pretty obvious place. I do prefer the stainless steel bodies of the new ones though.......

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