NEW WAY TWIN IGNITION - OPERATION MODES

OVERVIEW
New Way Horizontal twin cylinder engines were outfitted in essence with two variants in their ignition systems. Both buzz coil and H.V. magneto were used.
The engines were Boxer engines ie Horizontal and 180 degree apart. Ie when one piston is on the compression stroke the other piston is on the exhaust stroke. It is this fact that allowed a single spark coil configuration of Buzz coil to be used on a twin cylinder engine.
When LV dynamos were used for power this necessitated use of different spark coils to that required when powered just by cells (batteries).

Note:- Further detail is available in the Library in the 7HP Twin Cylinder Instructions (especially NOTE page 7)

MODES

1. HV MAGNETO
1. Uses standard methods of timing for combustion engines
2. Magneto timed for 180 degree.
2. SINGLE BUZZ COIL (1st drawing)
1. Possible because timing is exactly 180 degree apart.
2. Buzz coil MUST have 2 separate HV coil connections. (both fully isolated) (ie a 4 terminal coil box - 2 primary and 2 secondary)
1. NOTE:- Very Common 3 terminal Buzz Coils with one HV lead internally commoned to the LV side of the buzz coil will not work. 
3. The 2 Spark plugs connect in series to either side of the HV Buzz Coil output.
1. Ie every time the Buzz coil is timed to spark, both spark plugs will fire in series

1. One spark is wasted as the cylinder will be about to commence intake suction.
2. Important that plug gap is not wide as the effective gap is 2x the single plug.
4. New Way's use of the unique Speed Control lever sets spark timing with specific connection to account for double sparking to both cylinders.
1. Motor connections are totally different to when the double coil is used (refer Diagrams) 
5. Means the buzz coil is powered every 2nd stroke instead of every 4th stroke
3. DOUBLE BUZZ COIL (2nd Drawing)

1. Uses CAM timing associated with push rod actuated contacts to direct power to the correct coil, for timed spark to the correct cylinder.
1. Coil 1 - Cylinder 1
2. Coil 2 - Cylinder 2
3. Refer 2nd Diagram showing 2 coils  mounted within 1 coil box. 
2. Speed control lever alters timing for start /run
3. Ignition is in essence a duplicated single cylinder ignition system with a manual advance control.

So if you want to set up your New Way Twin with a single coil Buzz coil the key point is to make sure that it is a 4 terminal not a 3 terminal Buzz box.
For example T Ford and KW Bus coils can be 3 terminal boxes. Even New Way supplied both 3 and 4 terminal units, since 3 terminal is all that is required on a single cylinder engine.

For general interest:-
Here in Fig 4 is the configuration for a single cylinder engine ignition system. Note, in this case a 4 terminal Buzz coil has been used with one side of the LV and HV commoned externally. (2 terminals around top left hand corner of spark coil box)

Had this coil been used on a twin, the common of course would be disconnected and the other spark plug connected to that HV terminal and also changed to incorporate  connection via the speed control lever. (compare 1st drawing)

ENJOY
George