Retroreflective Manicure

2 09 2012

You  know those moments when you think of something so awesome but also so obvious and wonder “how did I not think of this before?” I had one of those last week – retroreflective nail polish!

Retroreflective means that a material reflects light directly back at its source. For night time cyclists, this means that the light from a car’s headlights is reflected back at the driver, making you look far brighter and more visible from a longer distance. Retroreflective materials are used in things like street signs and markings, high visibility safety wear, and to improve visibility of trailers & train cars.

Last year, I procured some traffic grade retroreflective glass spheres (spheres so small they’re almost a powder). I used them to turn bracelets and silk flowers high-vis in Retroreflective Goodness and to make the magnets in Bike Art Galore. The technique is easy: pour the glass powder over wet paint, let it dry & shake off the excess so there’s a single layer of glass spheres on the surface.

To apply to nails, simply embed the spheres in the final coat of wet nail polish! I did a blue stripe over a purple base coat and then just gently laid my nail down in the powder.

I only did the pinky and ring finger with the retroreflective material because this is still an experiment. The camera flash replicates the effect of headlights.

Hand signals just got way more awesome! Like with paint, the lighter the colour, the brighter it will be, and metallic colours look amazing.

So far, the retroreflective nails have worn better than just the regular polish, leaving me with another problem: how to remove it. I usually rub polish off with an acetone soaked rag but I don’t dare rub the retroreflective glass. Remember the Mohs hardness scale – glass scratches fingernail. I figure I’m going to have to invest in the type of nail polish remover where you dip the whole finger in if I’m going to have any chance of getting it off without damaging my nails. Another issue I’m having is keeping it clean. If I do up my whole left hand I’ll have to start wearing a glove (which I’m not a fan of) while I’m wrenching to prevent any bike grease from taking up permanent residence. At least one thing that I was worried about, the glass spheres detaching and getting into everything, hasn’t happened though.





Retroreflective Goodness

15 02 2011

Cyclists constantly hear complaints from drivers about how difficult we are to see (or more accurately, how easy it is not to see us). In response, some cyclists will feed an endless supply of batteries to a Xmas tree’s worth of blinkies while others repurpose dayglo highway worker vests into everyday riding garb. And that’s fine, it’s just not the way I roll.

My hoodie with a retroreflective owl in a tree and stars, plus a floral design on my calf. Being seen doesn't mean having to wear stripes. Photo by Chris Chan.

Geneva put a little bird on her hoodie.

The retroreflective silver returns the flash right back to the camera.

When I ride, I hope to encourage other folks to ride, too, and I think that presenting bicycle commuting as something you need an ugly uniform to do safely is contrary to that goal. “Cycling clothes” need not be discernible from street clothes, they’re just street clothes that happen to be suitable for cycling (which includes  everything but the trench coat).

Haydn put some subtle stripes on his parka.

Under headlights, though, not so subtle.

Still, some of the technology being developed for safety and athletic applications, such as retroreflective treatments are pretty cool, and I am very interested in applying it to apparel without it reading as safety wear.

As well as a pennyfarthing motif on his sleeve...

... Ian also created a turn signal effect on his gloves.

Perhaps I should begin with what retroreflective is, besides a cumbersome word that spell check won’t recognize. A retroreflective surface reflects light back to the source, no matter what angle the light hits the material. This is important for cyclists because at night it reflects the light from car headlights back to the driver, often allowing them to see a cyclist earlier than without a retroreflective sumtin sumtin. It’s no substitute for a good set of lights, but every little bit can help. In the photos throughout this post, the camera flash simulates the effect of headlights.

Orange is good color for daytime visibility.

With the addition of some retroreflective motifs, it's a good choice for night riding, too.

Over the last year or two, I’ve facilitated several workshops for folks to add retroreflective accents to their own clothes. The material we use is scrap from industrial production, the process is pretty simple, and the imagination is the only limit. All the pictures you see in this blog post taken in the red room (the upstairs lounge at EBC) are of folks who spent an evening with me brightening their wardrobes with this silver film.

Brendan's strategy for choosing his motif was one of my favorite.

"Eyes" like a moth to activate the "flight" response in the most primitive parts of the human brain.

This week I’m holding another workshop (Thursday, 7pm at EBC – register by emailing courses (at) edmontonbikes (dot) ca ) for anyone who’d like to increase their visibility without increasing their geekiness (unless you want to up the geek factor, and I’d be glad to help you if that’s your steez).

As well as using the retroreflective silver film for clothing, this workshop will have another exciting aspect (hey, I get excited by stuff like this). Inspired by a really cool tutorial on Giver’s Log, I’ve got my paws on some raw, traffic grade, tiny retroreflective glass spheres – think of it as high visibility glitter.

The retroreflective glass beads I added to this orchid for my bike look like a layer of sugar.

Outside, in the dark, this lovely orchid sends more light back to its source than the red rear reflector.

Having access to the raw material means we can now retroreflectivize a greater variety of stuff (specifically, anything that can be painted with acrylic craft paint) in almost any color.

These bracelets don't look like safety wear.

But in headlights no one will miss a turn signal when you're wearing safety bling.

I’ve barely begun exploring the possibilities of this stuff, and I’m really looking forward to seeing what the workshop participants will create on Thursday. If you’re in E-town this week, come check it out! The workshop will be fun, it’s cheap and there’s still space left for last minute registrants.





Twenty Inch Studded Tires

23 11 2010

It’s cold out there, so cold that it feels like riding straight into a slurpee headache, so cold that a slurpee would actually be 20 degrees warmer than it is outside, so cold that my camera refuses to work. Yesterday’s high was -24C, with a windchill of -34C. When you’re riding into the wind the windchill increases, so I took Porta-Bike on the LRT today to avoid the headwind, turning my usual 80 block commute into a 20 block commute (luckily, I was able to avoid rush hour, when bikes are banned from trains). With a tailwind on the way home, though, I rode the whole way and broke quite a sweat.

It was pretty simple to  make a studded tire for the Porta Bike using wood screws and a semi-nubby tire (anything too fat wouldn’t clear the fender). The first step is to figure out where you want to place the studs so that they’ll be engaged when you need them, but mostly out of the way when you’re rolling straight on smooth pavement. Then, take a drill with a narrow bit and drill pilot holes in the tire and insert the wood screws from the inside. Next, take an old tube the same size or larger than the tire, and cut out the valve stem and cut along the inside edge of the tube to make a a liner to prevent the screw heads from damaging the inner tube.

Once you position the liner & the tube, put the tire back on the wheel and pump it up, you will have a rather scary weapon with the sharp screw heads poking out in all directions. Because you, your other bike’s tires, and your favorite sweater are the ones that’ll most likely be hurt, I recommend grinding the ends down. This will also help with fork & fender clearance issues.

Grinding the sharp screw heads off the studded tire.

Porta-Bike has outperformed my expectations in both packed and loose snow,  it actually seems more stable than my other winter bikes. The coaster brake is also a win for winter, as there’s less to freeze or break, it doesn’t lose power when wet and because front brakes are less useful in treacherous conditions anyway. The only drawback is that the smaller wheels that fit so nicely in the door wells of our new LRT cars  don’t take the bigger bumps of hardened snow & ice as well as larger wheels.

Porta-Bike's new tire bling, making studded tires look cute.

I can see myself riding this bike much more this season, so I’m going to do some research about additional steps I can take to protect this old steel bike from the road salt and sand of an E-Ville winter.





Not exactly pretty, but a cheap & functional tip.

25 01 2010

I recently came across a tip to use a piece of old inner-tube to create  a barrier against dirt, water and salt for the bottom part of the headset, so I thought I’d try it out while replacing a fork on one of the bikes in the bike library.

A section of tube is pulled over the bottom of the headset.

With the fork and bearings removed from the head tube, simply pull a section of inner-tube on, leaving some hanging below,  then carefully trim it so it doesn’t touch the fork. Then fold the bottom of the rubber up (carefully – you don’t want to move the whole piece) and out of the way while you work. It can be folded down again after everything’s back together and the adjustments are all made.

I think I’ll do this to Ol’ Nelli next time I overhaul her headset, which, due to its poor quality (it’s pretty shot) and unusual size (difficult to replace), will probably be soon (again, sigh). I hope a little rubber can be enough to change my twice yearly headset overhauls into an annual event.