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Lightweight Brompton Bag

So I’m anticipating my Brompton, and I’m getting antsy.  I bought the T bag, and the Brompton folding basket, but knew I’d want a light, closed, bag some of the time, instead of either of the two Brompton bags.  Inspired by a Brompton owner named Jane, and her write-up about her own roll-top bag, I made my own. Gotta pass the time somehow, right?

I read Jane’s pages carefully, examined my own T bag just as carefully, and made the bag up using my own pattern, and customizing it to my own anticipated needs and requirements.

Here’s my bag, lightly stuffed, mounted on the Brompton luggage frame.  It’s made of bright yellow nylon with black accents, black zippers, and black nylon fittings.  (Yeah, I would have loved Racing Green trim, but just try to find the color in the USA.  Go ahead, I dare you.)

My front pocket isn’t as nice as the one on the Brompton bag, which is elasticized, and much more stylish.  Mine is a plain mesh pocket, which I anticipate using exclusively for magazines and the like.  Stretchability wasn’t necessary on this light bag.

My bag closes just like the Brompton bag (and Jane’s bags), with nylon buckles, but I did change up one little thing.  My buckles aren’t symmetrical — they’re designed so that they can be snapped closed on the sides, like the other bags, but the snap side is attached at one top front, and the casing side to the other top front.

This means that I can roll the top down and close it across the top, by joining the buckles, as well as securing the top by buckling the rolled edge down on each side.  (Above, the buckles snapped across the top of the bag, crossing the center strap; below, a buckle snapped shut on the side.)

The T bag has an interior pocket for the rain cover; I added one to this bag for anything I didn’t want to be immediately accessible outside the bag:

I used the same nylon webbing as for the straps to reinforce and support this pocket.

Making my own bag allowed me to customized the panel facing me to exactly the way I wanted to.  You can see the handle of the Brompton frame up top in the picture below (the hole it slips through is outlined in lycra binding), and the block under the curve is the fitting that clips into the luggage block on the Brompton’s head tube (the lower edge of this panel is also bound in lycra):

From the left side:  a large, adjustable mesh pocket for any size water bottle; a zip pocket for power bars, gel, or Shot Roks (that’s human kibble for long rides); a cell phone pocket with a strap-and-lift-tab closure; and, below, a zip pocket for a pocket camera.

The mesh I used is extra-sturdy; I cut up a new laundry bag to make the pockets.  Careful cutting meant no hemming on all that holey  material, which my sewing machine appreciated.

The camera pocket is reinforced internally with a piece of plastic craft mesh, which allows it to keep its semi-circular shape, and lets me pull out my camera without fighting with the pocket.  My camera has a silicone sleeve, so it tends to stick unless the pocket material stands off a bit.  (You can see the pocket in side view in the buckle picture above.)

I added strap clips, and made a shoulder strap, too, though I still need a pad for it.  Like Jane, I haven’t been able to figure out exactly what I want to do about the necessary padding.

This bag was intended to be a lightweight version of the T bag for trips that require carrying light or small cargo, but not the heavier or bulkier items that the original Brompton T bag can handle well.  My version is a fair-weather friend; it’s not waterproof, and very light.  It will do for an extra water bottle or two, and for collecting small shopping or parcels, but not much more than that.  It’s simply meant to provide me with minimal carrying capacity when making strictly recreational rides.

I may still want a closed bag the size of the Ortlieb Mini O.  That might be my next project, as Ortleib hasn’t come out with a bag in either Brompton yellow or British Racing Green.  I’d consider buying a real Mini O if Ortlieb made it in my colors, but if Ortleib combines either color with white, as they’ve done with their current Mini-O bags, I won’t be buying them, anyway, as white strikes me as the worst possible color for a hard-working piece of vinyl.

For inspiration (and a pattern, if you don’t fancy  making your own), visit Jane’s page, and take a look at her fantastic gallery of photos here. (There’s a cowbag, a clear vinyl one, and Jane’s also made one in velvet snakeskin.  And more, lots more.)  As soon as I have a Brompton on which to hang my bag, I’ll be sending my own picture along to Jane, too.

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Categories: Gear

Why Brompton?

Actually, why a folding bike at all?  Because I wanted to be able to go anywhere with a bike I could hide in the trunk of a small car or take on a train or a bus without inconveniencing others or requiring a bike rack, and one I didn’t have to worry about locking up when I was inside buildings.

I looked at Terns first.  The D8 is a terrific folding bike, and a joy to ride. At around 600 USD, it’s also reasonably-priced for a serious cyclist. The fold is compact, and the hinges are easy to use.

I almost bought a Tern.  The D8 is a fantastic bicycle, and hugely popular.  But I’m an older rider, and concerned about aging issues.  How much longer will I be able to cycle?  I’ve grown healthier and more fit over the past year (no accident, that), but I’m approaching those years when I can’t necessarily count on my body continuing to cooperate with whatever plans I have for it.

Instead of an adequate bike, maybe I needed a bicycle that was exactly right.  The Tern, though quite compact, has 20-inch wheels, making it larger than I preferred, and the sporty handlebars were not right for my hands.

Maybe I needed a lightweight folder that could be used for long rides of forty or more miles, but one that also folded as compactly as possible.  The perfect bicycle would let me grocery shop, run errands, take the train to new locations,  pop into my subcompact’s trunk so that I could get to distant trails with ease, and let me ride for forty or more miles in comfort.

Bromptons have tiny 16-inch wheels, and an extremely compact fold.  People commute on Bromptons, riding only a few miles a day, they’re taken on subways for “last mile” travel, and used for casual recreation, but people also tour on Bromptons, riding for hundreds of miles.

Brompton met all my qualifications, but Bromptons are quite pricey. They are manufactured and hand-assembled in the West End of London, not in China; if you buy one, you’re paying for skilled labor.

The argument against a Brompton was cost.  The argument “for” was everything else. My concern about cost was tempered by the realization that it’s very difficult to find a used Brompton for sale; mine was likely to hold its value if it didn’t work out. It seemed likely that I could recoup much of the cost, if my Brompton and I turned out to be incompatible.

Even so,  I didn’t want to commit to the whole process unless I was fairly certain that a Bronpton was right for me.  I was concerned about handling, and about how it might fit my body:  I’m a considerably lighter-than-average woman, on the short side, with no length in my legs.  Vast amounts of reading on the Internet suggested that people of all sizes and shapes find a good fit on a Brompton, but would I?  And how would I find out before putting down a small fortune to own one?

The answer turned out to be easy.  Stay tuned. To find out more about Bromptons, see the website:  Brompton Bicycle.

Categories: Gear