The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

Category: Recumbent Bicycling

Cruisin’ the streets

  • Cycling the Hudson Valley: 2014

    Seven days and 300 miles of pedal pushing:

    KE4ZNU route - 2014-07-28 through 2014-08-04
    KE4ZNU route – 2014-07-28 through 2014-08-04

    We rode north to the start of the Cycling the Hudson Valley ride in (wait for it) Hudson, rode south while crossing the Hudson six times, then I rode north from Da Bronx while the other 100 riders proceeded south to the tip of Manhattan and the finish line in Brooklyn. Mary, alas, drove the last few days to avoid aggravating a tender tendon.

    While everybody else had a touristing day in Hyde Park, we slept in our own beds for two nights.

    Everything you need to know about modern bicycle touring:

    Cycling the Hudson Valley - Charging Station
    Cycling the Hudson Valley – Charging Station

    The straight line along the right side of the map, from just below the New Croton Reservoir to Hopewell Junction, represents data loss from riding in a valley, plus knocking the coaxial power plug out of the battery pack where the South County Trail becomes one with Rt 100 / Saw Mill River Road for a few miles.

    That last day had plenty of hillclimbing, even on the rail trail, but with a rewarding section of Rt 52 that drops 500 feet in a mile; I hit 41 mph while passing under I-84.

    A good time was had by all!

  • Bike Helmet Earbud Iteration

    Based on having to seal the rear vent hole of the previous earbud, I did the same for the new one:

    Earbud - blocked vent
    Earbud – blocked vent

    The audio quality was terrible, so I tried another bud with a foam windscreen over the hole and a hole punched in the middle of the double-sided white foam tape:

    Earbud - foam over vent
    Earbud – foam over vent

    The audio remained unintelligible, so I tried an upscale (but still cheap, because surplus) Koss earbud, first without blocking the vents and then with snippets of Kapton tape:

    Koss earbud - tape over vent
    Koss earbud – tape over vent

    The earphone has three slits on each side, but only the middle slit has a hole penetrating the case; it must be a stylin’ thing.

    That sounded better, so I’ll roll with it. There’s supposed to be a foam cover over the housing, but those things always get grody and fall off; there’s not much point.

    As nearly as I can tell, contemporary earbud designs optimize for volume (dBm/mV) and thumpin’ bass, all to the detriment of actual audio quality. Based on numerous samples over the years, there is zero correlation between price (admittedly, on the low end) and audio quality (admittedly, with my crappy hearing).

    I own a pair of very nice (and thoroughly obsolete) Shure E2c sound-isolating ear beetles that sound great (even with my crappy hearing), but I’m unwilling to chop them up for the bike headset …

  • Bike Helmet Boom Mic: Assembly

    After building the mic mount, another dab of epoxy mounted the length of AWG 10 wire I said I wouldn’t use:

    Bike Helmet Mic Boom - rod epoxy
    Bike Helmet Mic Boom – rod epoxy

    The whole point of the complex mount is to expose the two noise cancelling holes on the back of the electret element:

    Bike Helmet Mic - electret element rear
    Bike Helmet Mic – electret element rear

    Add heatstink tubing over the entire length of the boom wire, use more black cable ties, shape another foam ball:

    Bike Helmet Mic Boom - installed
    Bike Helmet Mic Boom – installed

    And it worked on the first try, not that there’s much to it.

    Yeah, that’s the HDR-AS30V camera mount up top: dork mode in full effect.

  • Left Turn on Red

    Coming out of Adams, we’re ready to make a left turn onto Rt 44:

    Left turn on red - 2014-07-24
    Left turn on red – 2014-07-24

    He was one car back in the left-turn storage lane when his light went yellow-to-red, crossed the stop line on the red, and was one car length over the stop line and accelerating when our light changed to green.

    We’re ready to start rolling on green, but we’ve learned to wait a few heartbeats for just such occasions; what counts as a fender-bender for you would be a fatality for us.

    Y’know how motorists get very, very angry at cyclists? I’ve always wondered why they don’t get that angry when motorists do those same stupid things, at higher speeds with much more energy.

    We ride as though we’re thin cars, which is how it’s supposed to be done, and generally don’t get too much hassle.

    One thing that is annoying, though: short-stroke yellow cycles that last maybe two seconds. We can cross the stop line on green, accelerating firmly through the intersection, and still get caught in the middle as the signal changes to green-to-yellow-to-red behind us and red-to-green for opposing traffic. No, we didn’t run the yellow, but that’s what it looks like.

  • Easy Reacher Pack: New Elastic Cord

    The elastic cord behind the left-side under-seat Easy Reacher pack on my Tour Easy snapped some time ago, probably due to wear against the brace I installed to keep it from flopping around. Quite contrary to what I expected, the repair turned out to be almost trivially easy.

    The cord terminates in a pair of plastic lugs, each with a ferrule that slipped off under moderate persuasion to reveal a pair of wedges that engaged the cord:

    Easy Reacher pack - elastic cord clamp
    Easy Reacher pack – elastic cord clamp

    I expected the ferrule to have a positive lock engaging those wedges, but, nope, there’s (at most) a small ridge. Pry the wedges out and the cord slides out of the lug without a protest; the wedges don’t quite meet in the middle with the ferrule in place and there’s plenty of retention force on that flexy cord.

    One of the shorter bungie cords in my collection turned out to be exactly the right diameter and length, with ends secured in its hooks using a simple crimped wire. Bending the ends of the wire at right angles freed the cord from its embrace:

    Easy Reacher pack - unclamping new elastic cord
    Easy Reacher pack – unclamping new elastic cord

    The original stainless steel hook lies by the edge of the road along my usual bicycling route, but a slightly reshaped S hook (made, alas, of ordinary steel) fits around the cord well enough. When this one rusts away, I have plenty more.

    Insert cord into lugs, push ferrules over locking wedges, remove one ferrule and lug, install reshaped S hook, reinstall lug and ferrule, install new cord on pack:

    Easy Reacher pack - new elastic cord
    Easy Reacher pack – new elastic cord

    Install pack on bike: done!

    I have no explanation for how well this worked out; I fear the Universe is saving up spit for something truly awful.

  • Tour Easy Kickstand Adapter Plate

    The venerable Greenfield kickstand on my Tour Easy doesn’t quite match the mounting plate under the frame, with the result that it can pivot just enough to make the bike tippy with a moderate load in the rear panniers. I’ve carried a small block to compensate for sloping ground, but I finally got around to fixing the real problem.

    The solution turned out to be a spacer plate that fills the gap between the back of the kickstand casting and the transverse block brazed to the mounting plate:

    Tour Easy kickstand adapter plate
    Tour Easy kickstand adapter plate

    That little lip is 2 mm wide, so it’s not off by much.

    The aluminum came from a Z-shaped post that contributed its legs to a previous project. I flycut the stub of one leg flush with the surface, then flycut a slot 2 mm from the edge:

    Tour Easy kickstand adapter - flycutting recess
    Tour Easy kickstand adapter – flycutting recess

    For no reason whatsoever, the width of that slot turned out exactly right.

    Bandsaw along the left edge of the slot, bandsaw the plate to length, square the sides, break the edges, mark the actual location of the mounting plate hole, drill, and it’s done!

    An identical Greenfield kickstand on Mary’s identical (albeit smaller) Tour Easy (the bikes have consecutive serial numbers) fits perfectly, so I think this is a classic case of tolerance mismatch.

  • Turtle Tragedy: Raymond Avenue

    Verily, ’tis the season for turtles on the move. This one clunked over the curb on Raymond Avenue at Vassar Lake, couldn’t find an escape route, and got smashed:

    Smashed turtle - Raymond Ave at Vassar Lake - 2014-07-06
    Smashed turtle – Raymond Ave at Vassar Lake – 2014-07-06

    Turtle armor works pretty well against their usual predators, but can’t handle automobile tire impacts.

    That’s a tight crop from the helmet camera, with terrible compression artifacts smearing the spalled concrete sidewalk.

    For whatever reason, NYSDOT can’t do concrete sidewalks; the entire length of Raymond Avenue has lousy concrete. The fact that Vassar College B&G uses the sidewalks as their private golf-cart highway may have something to do with it, but that’s not the primary problem, because the concrete on DOT’s showcase Rt 55 between Burnett Blvd and Titusville Rd looks the same way.