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I have been refurbishing the disk brakes on my 83 650sk. I ordered in a kit that had a replacement cap, metal plate(bush in the parts list), diaphragm and screws. To be honest I wasn't really needing a new cap, but I was comparing the old and replacement caps and noticed something. There is...

I have been trying to contact XS650Direct through their website contact form. Just have a couple of questions about the parts before I confirm my order. They are not answering. There is no other contact information listed. Not too impressed. If they don't respond to questions now, how are...

I have been collecting this information for a while. Finally getting around to posting it. I don't think this stuff is stored in the tech section. The picture of the bottom of the circuit board was done when I was reverse-engineering the board. I thought it might be useful for anyone who...

I know this topic comes up periodically, so I hope I am not beating this to death. There was a recent post by Jim on another thread about the best multimeter to buy. I was asked that question recently as well and was somewhat stumped. I was wondering what meters people have and why they like...

Been working on a Arduino TCI project last couple of years. Got it mostly working. Still a few issues, but 95% of the way there. Here is a shaky video of a test in the garage this morning. The proto board was cut to fit into a tci plastic box, but for this test it is not mounted in the box...

Here is the TCI test jig I have been using. I have included the arduino code, in case any one wants to tinker. Also included is a schematic of the extra circuits I created to get it working. You would also need an oscilloscope to view the waveforms. The jig generates the two pickup pulses...

Here is a lengthy explanation of TCI electronics and timing with pictures. Hope it helps someone.

Here are some rough schematics of a 12-01 igniter board (1980). This is the first version and a rough draft, but will give you something to chew on. The block is guess work. Pages 2 and 3, I believe to be reasonably accurate at this point in time. I have some doubts about page 4. The...

I have made some corrections to the 12-03 igniter schematic that I submitted previously. This igniter was off of a 83 Heritage Special SK. If you have any copies of the first version I submitted, get rid of them. This schematic was corrected using some reverse engineering methods. Things...

Hi, I’ve had my bike for a few years, done lots of repairs on it. The igniter packed it in a couple of weeks ago. I spent the last couple of weeks going over it. I have traced out the board to the best of you ability. I am a retired electronics tech, so I think I have a reasonable...