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Old 09-04-2012, 05:35 PM   #1
Bulldust OP
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Joined: Jun 2007
Location: Australia
Oddometer: 838
BMW Airhead Parts

Fellow Adventure Riders, I have been riding Air-cooled BMW's for the last 25 years, having owned over 20 of these fine machines and still having 6 in the garage. I have also owned and ridden Bricks and Oilheads, like most of you I have modified my bikes, added a bit of bling and made them fit a bit better and go harder and carry more crap. Due to the non-availability or high cost of locally sourced genuine BMW products and aftermarket parts I sourced many parts from overseas and often visited parts supplies when travelling. To defray the cost of travelling I often brought back extra parts for friends. Many times, however I found that the parts I wanted were not available and had to be custom-made. One such part is an electronic ignition system for airhead motorcycles from 1981 through two 1996. I have found over the years that the weak point in the original BMW ignition system is the Hall Effect trigger and the centrifugal advance weights and springs. Centrifugal ignition advance is problematic at best and really a technology that had been abandoned by automakers many years ago. Also should a Hall Effect trigger fail the bike stops. Many adventure riders carry a spare ignition can “bean can” in case of this type of failure.
About a year ago I decided to design a new ignition system plagiarising what I could from the best ideas used around the world. In combining all that knowledge into a new product being an electronic advance ignition system that is a plug and play option for our air cooled BMW Motorcycles. During the manufacturing process I have had twin Hall Effect triggers fitted, so in the event of failure of the prime trigger all that is required is a changeover of a plug and you are back on the road.
Ignition advance is handled within a new ignition control module that replaces the existing BMW unit under the fuel tank. No longer will sticking advance weights cause an excessively high idling speed and rough running particularly off idle. This system produced a smoother running engine with superior torque particularly off idle (great for low speed tracks and those creek crossings).
I have many other BMW parts available including 450 Watt alternator units for both early model (R90S) and later model airheads $450, high output voltage regulators $39.95, heavy duty replacement diode boards $95.00, rebuildable Para-Lever Drive shafts $650, Nippondenso starter motors for early model and later model airheads $450 (no more dropped magnets from faulty Valeo starters).
The cost of the complete ignition system is $450 (identical systems with a single Hall effect trigger are available for $375). Units for Twin Plugged bikes also available just let me know what you need. Guaranteed for 12 months from purchase, spare parts available. I am located in Brisbane pick-up's welcome. Shipping within Australia $12.50, overseas $30.00.

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