That's roughly what I usually experience. About an hour or so ride on a sunny day and the fog cooks off. That's why I've never been that motivated to do something about it.
If I where to attempt drilling holes... I might take a look at this video...
I'm guessing it might be better to attempt to put a pin sized hole in the side of the speedo's outer case instead of drilling a hole in the bottom. That way if you go a tad too deep you only encounter the outer plastic shell of the inner assembly (vs. the PCB, electronic components etc.). Seems you would only need to break the seal for it to breath and this might do it. Maybe around this location...
Alternatively, maybe anywhere around the 3 or 4 O'clock position might work equally as well. Or maybe 8 or 9 O'clock.
Anyway... My 2 cents.
I've watched that too ... I'm not that motivated either
I tried the "drill a couple of holes in the back" routine a couple of years ago on my 2018 Heritage speedometer to eliminate the fogging issue. I, too, hit the circuit board and had to replace the entire unit. None in stock locally and a months long estimate to get a new one. Found a replacement about 180 miles away at another dealership. No fogging on the replacement. Bought a new Heritage in Nov-2022 and it has not fogged up once. I guess HD has fixed the problem.
My advice: get a replacement and don't try to drill holes in the back of your speedometer.
My 2020 LRS was bad for this speedo fogging, but so far my 2022 LRS has had none which is appreciated, the foggy speedo imo is a hazard especially when you need to look down at the tank mounted ones taking your eyes of the road longer than one should
I used a pin vice when drilling mine, greatly reduces the potential for the bit to plough on though the board
This. When I said “drill holes in the back” I didn’t mean grab the power drill and go to town. I think I recommended the pin vise route as you can feel your way. The plastic is very soft and drills easily.
Just wanted to report that I took on the condensation problem with my speedo this year (’18 FLDE). I did the modifications late Feb and have ridden about 2,000 miles in temps ranging from 45° to 90° (it’s early May now). Now, I haven’t ridden in any 100° hot & humid days, but MY condensation problem was not a seasonal thing. I think I’m ready to call this a WIN.
I’m not going to suggest that anyone do this unless you are prepared to take a chance on ruining your instrument. I drilled the holes on a drill press (where I could control the depth of cut) and used a vacuum cleaner to remove the chips while the holes were being cut. Here are a few pics from the mod:
That's roughly what I usually experience. About an hour or so ride on a sunny day and the fog cooks off. That's why I've never been that motivated to do something about it.
If I where to attempt drilling holes... I might take a look at this video...
I'm guessing it might be better to attempt to put a pin sized hole in the side of the speedo's outer case instead of drilling a hole in the bottom. That way if you go a tad too deep you only encounter the outer plastic shell of the inner assembly (vs. the PCB, electronic components etc.). If one's theory is that getting the thing to breath is the answer, then it seems you would only need to break the seal to achieve that. Maybe around this location...
Alternatively, maybe anywhere around the 3 or 4 O'clock position might work equally as well. Or maybe 8 or 9 O'clock.
Of course this all assumes that breathing is the answer. Going by other's post alone, seems like it might be dubious.
Anyway... My 2 cents.
I wonder if you drill into the side of the speedo , looks like there is a safe place there ..
08-21-2023, 08:54 PM
