3a. BTH KD1, Lucas Magneto/MagDyno and Ignition and HT Parts

The BTH KD1 Competition magneto was the standard fitment to competition Norton Internationals and SOHC Manx Nortons. The competition versions (identified by a brass plate on its side reading either 'TT Magneto' or 'Dirt Track Magneto' and having the icompetition designate in its serial number) were fitted with platinum points and a manual advance/retard mechanism with a 3 screw inspection cover. I can supply most parts to fit this magneto and also occasionaly I have second hand parts as well. PLEASE NOTE: Some of the prices quoted in this section - particularly for small stainless steel screws may seem expensive compared to other commercially available nuts and bolts. Please bear in mind that this is because they are being made specially in small batch's for this magneto. Unfortunately the machinist charges for the number of machining operations - not the size of the screw!!

This item is the 15 tooth magneto sprocket that was fitted to most Norton single cylinder models from the 1930's to late 1950's (i.e. SOHC, OHV and SV models) and fits on the end of the magneto shaft (either Lucas Magdyno or BTH KD1 fitment). These items are just the same in profile as original sprockets - the magneto sprocket being recessed, just as the original Norton item.  Price is Each. 

This item is the 15 tooth Norton single magneto chain sprocket on the engine side - that drives the chain to the magneto sprocket, it fits on the end of the oil pump drive gear (SOHC models) or inlet cam (OHV and SV models). These sprockets are manufactured to to the original Norton profile, and were as used on most Norton single cylinder models (i.e. SOHC, OHV and SV singles) from the 1930's to late 1950's.   Price is Each.

- This is an excellent reproduction of the aluminium cover that was fitted to many BTH magnetos from the 1920's - late 1950's, including the KD1, MH1, KD2 and other similar models.  It has a faithful reproduction of the correct BTH motif stamped into it.  Aluminium.  Price is Each

- Stainless steel hex head tapered screws for competition BTH housings. Drilled to take lockwire and with screwhead slot, just as the originals were - Stainless Steel.  Price is each

This listing is for an unmachined cast aluminium 3-screw type points cover, to fit the manual advance/retard housing BTH KD1 TT model magneto.  The casting is a high quality (lost wax) casting, with (lathe) machining boss attached, and we supply it with an engineering drawing giving machining dimensions taken from an original cover.  See listing for further detail

Hex head bolt with screwdriver slot to fit the 3-point competition BTH KD1 cover (screw comes with steel washer)

These are the small round headed screws that retain the alloy BTH embossed cover fitted to most BTH magnetos, as shown here.  Screws are CNC turned in stainless steel to original BTH head shape, and come with washers.  Price is per pair 

- Competition Cover (3 screw type) paper gasket for BTH KD1 competition magnetos

- Correct size shims to fit BTH KD1 magnetos and other BTH magnetos with similar housing - i.e. KD2, KH1, KH2 etc.  See detail listing for more information. Available in 2 thickness - state which required.  Also, see detail for Lucas size shims