K2F K2FC Magneto Restoration

SRM specialises in the renovation of these particular models of LUCAS magneto as fitted to BSA,TRIUMPH and NORTON twins. After WW2 the K2F was the main unit used to provide the ignition for all the popular twin cylinder British motorcycles. Racing and competition bikes were catered for with the LUCAS K2FC. The most common problem with original magnetos is failure once hot. This is usually due to a breakdown in the insulation of the condenser or of the armature windings themselves.

When we undertake renovation of these units we examine the following:-

  • Mechanical - Bearings, insulation, washers and shimming the armature
  • Electrical - Armature windings, Condenser, Slip ring, Points and Bushes
  • Magnetic - Check magnetism and regenerate magneto body
  • Ignition - Check Spark strength, Spark timing and stability

The magnetos electrical performance can only be examined when the magneto is actual ‘run’ as if it were on the engine. We use the CRYPTON MAGMASTER (from the 1950s) to do a comprehensive testing programme on each magneto we rebuild. This allows us to do slight adjustments to the magneto to achieve the best constant and accurately timed spark that the magneto is able to produce.

The final running test programme includes:-

  • Checking the normal spark HT Voltage
  • Checking the maximum available spark HT Voltage
  • Checking the ignition timing stability over rev range
  • Checking the ignition timing for correct timing angle (for most twins this is 180 degrees)
  • Running the magneto for 20 minutes whilst heating to full engine temperature

By performing this test programme we can be confident that the magneto you fit to your engine will be at peak performance and will remain reliable for years to come

Send your magneto to us, we will test it to ascertain its’ faults, provide an estimate and contact you to discuss the work required.

Each Renovated magneto is backed by our 2 year guarantee.
 

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