Testing on the 340 was delayed by a bunch of other projects.
Here is what we found this past weekend:
Average gap between rotor tip and button in the cap was .120". We extended the brass rotor tab and now have an average gap of .030".
Drilled a hole in another cap and checked rotor phasing with a timing light. Basically, the phasing is way off. The rotor is pointing at plastic, not the cap button. We are looking for a reluctor that has the proper phasing. Ehrenberg sells them on Ebay sometimes. Or I may have this one machined with a new keyway.
The basic causes to get it that far off are reversed leads on the pickup, regardless of color or connector, and improper orientation of the reluctor.
By the way someone mentioned a "ceramic rotor." Ceramics do not necessarily guarantee a great insulator. During WWII there was some ceramic that turned out to be VERY poor at RF frequencies. Remember, ceramics are basically just overheated mud and dirt, and "anything" could be in there
Got to get back to the other projects, so another progress report will be a few weeks away. Thanks, again FABO members.
