TXA Phoenix
TX650A Phoenix
I've installed a Boyer Bransden Micro Power Ignition on my 1974 TX650A.
It was easy to follow the instructions and align the mark on the crank rotor to the unlabelled full advance mark on the stator and then align and set the white dots on the magnetic rotor to the holes on the stator plate. This allowed for easy starting. The Boyer instructions then call to
"strobe time on the front or full advance mark by reving up the engine and watching the timing move up to the mark. Adjust by moving the stator plate."
I'm having a problem with these instructions because I obviously think that it is necessary for the advance timing marks to come into alignment at a precise RPM. Which should be what full advance timing is when using the centrifugal advance which was designed with the engine. I've read two sources for this value. One was 3000 RPM and the other was 3200 RPM. Does anyone know the true and correct value? I imagine it could be found by strobing on the centrifugal advance weights and using a precise digital tachometer and noting at what RPM they move completely out.
Since the Boyer ignition digital unit is suppose to be programmed for optimal spark advance adjusting at units of 50 RPM from idle to full advance isn't it obviously necessary to set it precisely?
I've contacted Boyer by email and they only offer senseless answers of maybe this RPM and maybe that RPM. They won't answer at what RPM does the digital unit provide full advance. That's what I need.
I'd like to save myself some money and set it correctly myself if I had the correct values rather than taking it to the bike shop and having it dyno tuned. Does anyone have any opinions or information on this situation? I've been reading about the Boyer Bransden posts on this forum but none seem to be exactly related to this one.
It was easy to follow the instructions and align the mark on the crank rotor to the unlabelled full advance mark on the stator and then align and set the white dots on the magnetic rotor to the holes on the stator plate. This allowed for easy starting. The Boyer instructions then call to
"strobe time on the front or full advance mark by reving up the engine and watching the timing move up to the mark. Adjust by moving the stator plate."
I'm having a problem with these instructions because I obviously think that it is necessary for the advance timing marks to come into alignment at a precise RPM. Which should be what full advance timing is when using the centrifugal advance which was designed with the engine. I've read two sources for this value. One was 3000 RPM and the other was 3200 RPM. Does anyone know the true and correct value? I imagine it could be found by strobing on the centrifugal advance weights and using a precise digital tachometer and noting at what RPM they move completely out.
Since the Boyer ignition digital unit is suppose to be programmed for optimal spark advance adjusting at units of 50 RPM from idle to full advance isn't it obviously necessary to set it precisely?
I've contacted Boyer by email and they only offer senseless answers of maybe this RPM and maybe that RPM. They won't answer at what RPM does the digital unit provide full advance. That's what I need.
I'd like to save myself some money and set it correctly myself if I had the correct values rather than taking it to the bike shop and having it dyno tuned. Does anyone have any opinions or information on this situation? I've been reading about the Boyer Bransden posts on this forum but none seem to be exactly related to this one.