Will the ST1300 continue to run (off the alternator) if the battery is disconnected while it's running?
A friend tried to tell me that if you jump start a bike it will only run for a few minutes before it dies from dead ignition, fuel pump, FI, etc. At least that happened to him one time on his bike (the other "H" bike, not a Honda). My contention is that the bike is running off the alternator once it's started. I'm thinking said friend had an alternator with low or no output, as the bike obviously wouldn't run very long on the battery alone. I've jump started my bikes in the past several times over the years and continued to ride home with no problem. The only bike I wasn't able to jump start was my RD, unless you consider jumping on the kick starter a "jump start".
BTW, I measured my battery voltage yesterday afternoon before and after starting, it was 12.6V at rest, ~14.2V at idle, and limited to 14.25V above 2k RPM or so. Do those numbers sound about right?
Edit: It was also impossible to jump start the Cavalcade unless an owner-installed mod was added to the bike, due to lack of battery accessibility. I got around this by jumping directly to the starter when I got caught with a weak battery.
A friend tried to tell me that if you jump start a bike it will only run for a few minutes before it dies from dead ignition, fuel pump, FI, etc. At least that happened to him one time on his bike (the other "H" bike, not a Honda). My contention is that the bike is running off the alternator once it's started. I'm thinking said friend had an alternator with low or no output, as the bike obviously wouldn't run very long on the battery alone. I've jump started my bikes in the past several times over the years and continued to ride home with no problem. The only bike I wasn't able to jump start was my RD, unless you consider jumping on the kick starter a "jump start".
BTW, I measured my battery voltage yesterday afternoon before and after starting, it was 12.6V at rest, ~14.2V at idle, and limited to 14.25V above 2k RPM or so. Do those numbers sound about right?
Edit: It was also impossible to jump start the Cavalcade unless an owner-installed mod was added to the bike, due to lack of battery accessibility. I got around this by jumping directly to the starter when I got caught with a weak battery.
Last edited: