Reverse Engineering of the 1978-1983 CB400T, CM400T and CB450SC CDI
Schematic and PCB layout are in KiCAD format.
Complete units available at Hondamatic Parts
CDI PCB has been tested and confirmed working:
https://youtu.be/4rw3liYhtpE?t=53
For kit builders:
The following case will mount to the frame from the left mounting
bolt with a bit of work - https://www.amazon.com/dp/B07TYNYW1S
Grommet for case:
7080N15 EPDM Grommet from MCM (3/4" drill hole size x 1" total length)
Potting compound:
MAX MCR
Credits:
Blair M. - Reviewing schematics and lending EE knowledge.
T. W. Wolfgang - Reviewing schematics and lending EE knowledge.
Steven Myers of Bearish Cases - CAD work for casing.
PrimesTurmoil - 3D printing.
Jim and Tom from VHT - Support and supplying broken CDIs.