CDI Units "A" and "B" Combined into one Box
is a newly
style CDI box, made to replace both stock units in late model Kawasaki
H1 motorcycles, including the H1E, H1F, and KH500, made from 1974 to
1976. Internally, it is a
modern copy of the
original units, with similar electrical circuits, and components
equivalent or superior to the originals. The main capacitor is rated
uF, which is the same as originally installed, and the correct rating
for this ignition system. The
main electronic component, the Thyristor (SCR), is rated at 8 Amps,
much more robust than the original 3 Amp device. The diodes in the rectifier section are rated to
withstand twice the current and more than double the voltage the
originals could handle. The
housing is hand fabricated from heavy gage 304 stainless steel,
finished with a brushed appearance, and designed to fit perfectly on
the original mounting plate. The circuit is sealed in high quality
epoxy potting compound for protection from moisture and vibration.
Kawasaki designed the late H1 ignition system with two separate units, a main CDI ("A") unit, and a separate, smaller filter ("B") unit. The filter unit is quite simple, with little to fail, but constructing a complete stainless steel "B" housing and adding the electronics is time consuming, and hence not inexpensive. We decided to make this all-in-1 unit available, which combines both boxes into one, as an economical alternative to buying both original type boxes. Combining them in no way compromises performance. The single combination unit is electrically identical to two separate units.
This CDI unit works like both of the original units in every way, including the advance curve. It produces fat, bright blue sparks at modest kicking speeds, like the originals did when new.
We will repair or replace this unit, or refund the purchase price (at our option), if it fails to perform properly as a result of defects in materials or workmanship, within five years of the date of purchase.