Looking for input for how to reduce the humming / ringing noise from the ladder on top of my truck. At about 45mph the noise picks up enough so that I can’t use my Bluetooth/Sync for my phone without having the person on the other line asking me to repeat myself.
I’m thinking it might have been @Innocentbystander who suggested a shot of expanding foam into each rung but I could be mistaken on that.
Finally, I get to share some musical advice with you guys! You’re basically dragging a 24 foot long woodwind instrument down the road & it comes alive at 45 mph. If you put a shot of foam in the middle of each rung, you run the risk of doubling the amount of ‘flutes’ you’re pulling along as well as having an octave or so higher due to half the air space & even worse, they will be way out of tune & most definitely, horribly dissonant unless they are all perfectly matched, which also wouldn’t be good. Probably wouldn’t be as noticeable until you hit 90 or so but still, I’d suggest either close up every rung at both ends or name it Kenny G and let him do his thang.
shove a wad of paper in the hole only about as deep as 2in, THEN fill with foam so it doesnt fill the entire cavity full and to can easily reverse the mod if needed.
That’s not how it works at all. You’re trying to make way more of something than it is. You literally just shoot some foam in each end of each rung, let it expand out past the edge of the rung, cut off the excess with a knife and it’s done. There’s no woodwind instrument effect whatsoever.
That’s a good idea. I’ve done this twice and never put anything in before the foam. Just shot a glob towards the end where it will expand and then usually have to trim a bit of excess.
I’ve also seen guys shove foam golf training balls in there, too. But they don’t seem to seal it up as well as foam does.
I dig it! I keep a 13 foot multi ladder on the trailer “just in case”, that way I won’t need it haha. Cause if I show up without it, I’ll wish I brought it.
