Coincidentally, I'm working on the jetting for my 'Competition'-model Gold Star. Making a long story short, its GP is now in a box and I replaced it with a 1036 Concentric. Most of the 1000-Series Concentrics, including this one, came configured for 2-strokes, not all of whose features are documented.
Anyway, yesterday morning I did a short loop in the neighborhood and the initial jetting seemed great (at least up to ~40 mph) so I decided it was ready for the air/fuel sensor and data logger. I proceeded slowly with the installation, trying to make sure nothing could fall off, or get caught in the spokes, so this took about 90 min. The photograph shows the final result.
Everything is held in place by nylon straps or zip ties, but I also used blue tape to keep a few things from wiggling. Starting from the back of the bike there's a sealed 12 V battery to power the Innovate LM-1. Next is the inductive clamp around the spark plug lead for determining rpm. Located at the final bend in the downpipe is the wideband sensor. Clamped to the handlebars is the throttle position sensor based on a potentiometer and AA battery. And on top of the headlamp, along with all the extra wire, is the LM-1 and an accessory called the LMA-2 that accepts the input from the inductive clamp along with four additional 0-5 Volt channels. I'm only using one of the channels, for the throttle position sensor.
I hadn't used the LM-1 for quite a while and didn't realize its memory was full. Although I realized much later that the brief message that was displayed upon power-up was for that reason, I was busy getting the bike off the DocZ starter rollers at that point so didn't pay attention to it. I hit 'Record' and, again, didn't notice the absence of an 'R' that flashes every few seconds to confirm recording is actually taking place. If it's actually taking place...
What might be relevant to you is that, although I didn't try to memorize the A/F readings displayed during my ~10-mile ride (because, ahem, the LM-1 was recording everything for me for later viewing...), I did watch them as I rode. The problem of "real time monitoring" this way is the readings are constantly changing, and a digital display is far from ideal under these circumstances. On a perfectly flat road where I could hold the throttle at, say, a constant 1/4 this would be much less of a problem, but on curving roads with hills there's information overload.
Absent data logging, the ideal would be an analog display with variable time constant. Under fairly constant conditions (e.g. flat road at 1/4 throttle) a time constant of 1 sec. would save the rider from trying to mentally average values flickering at 4 Hz throughout the range of say, 13.8 to 14.2, with occasional jumps outside that range. But, when trying to discern transient response (e.g. checking the slide cutaway), a faster response would be needed.
I'm not sure yet whether I'll have a chance for the next run today, or if it will have to wait tomorrow. Meanwhile, I've purged the LM-1's memory of all prior thoughts so it's ready to record.
Anyway, yesterday morning I did a short loop in the neighborhood and the initial jetting seemed great (at least up to ~40 mph) so I decided it was ready for the air/fuel sensor and data logger. I proceeded slowly with the installation, trying to make sure nothing could fall off, or get caught in the spokes, so this took about 90 min. The photograph shows the final result.
Everything is held in place by nylon straps or zip ties, but I also used blue tape to keep a few things from wiggling. Starting from the back of the bike there's a sealed 12 V battery to power the Innovate LM-1. Next is the inductive clamp around the spark plug lead for determining rpm. Located at the final bend in the downpipe is the wideband sensor. Clamped to the handlebars is the throttle position sensor based on a potentiometer and AA battery. And on top of the headlamp, along with all the extra wire, is the LM-1 and an accessory called the LMA-2 that accepts the input from the inductive clamp along with four additional 0-5 Volt channels. I'm only using one of the channels, for the throttle position sensor.
I hadn't used the LM-1 for quite a while and didn't realize its memory was full. Although I realized much later that the brief message that was displayed upon power-up was for that reason, I was busy getting the bike off the DocZ starter rollers at that point so didn't pay attention to it. I hit 'Record' and, again, didn't notice the absence of an 'R' that flashes every few seconds to confirm recording is actually taking place. If it's actually taking place...
What might be relevant to you is that, although I didn't try to memorize the A/F readings displayed during my ~10-mile ride (because, ahem, the LM-1 was recording everything for me for later viewing...), I did watch them as I rode. The problem of "real time monitoring" this way is the readings are constantly changing, and a digital display is far from ideal under these circumstances. On a perfectly flat road where I could hold the throttle at, say, a constant 1/4 this would be much less of a problem, but on curving roads with hills there's information overload.
Absent data logging, the ideal would be an analog display with variable time constant. Under fairly constant conditions (e.g. flat road at 1/4 throttle) a time constant of 1 sec. would save the rider from trying to mentally average values flickering at 4 Hz throughout the range of say, 13.8 to 14.2, with occasional jumps outside that range. But, when trying to discern transient response (e.g. checking the slide cutaway), a faster response would be needed.
I'm not sure yet whether I'll have a chance for the next run today, or if it will have to wait tomorrow. Meanwhile, I've purged the LM-1's memory of all prior thoughts so it's ready to record.