Dahon Speed D7 Folding Bike

Recently I started a job which requires me to commute to work via BART.  BART has its own rules regarding bicycles on the trains, which meant that I needed to get a folding bike in order to commute through downtown during the rush hours.

I quickly zeroed in on the Dahon Speed D7 as an affordable and popular model.  I ordered mine online (from Safety Cycle, about 430 $US).  It arrived in good condition, but (no surprise) needed some initial adjustments to the rear derailleur and brake before it was fully usable.

Observations

Some highlights

• Bike is entirely adequate for riding short distances.  Not for steep hills nor downhill racing, but perfectly fine for short commutes.
• Space saver.  The folded size is similar to a carry-on suitcase.  Much easier to have on the train than a full size bike.
• Quick folding. True to the advertising, the bike can be folded and unfolded in about 15 seconds (with practice).  In reality, the unfolding phase takes a little longer, as I’ll often make minor adjustments to the handlebars and seat stem until they’re in proper position.  I’ve made a few marks on the metal with a Sharpie to make these adjustments faster.
• Rear rack is useful enough – it passes the litmus test of being able to hold a donut box

Some lowlights

• Bike is somewhat hefty at ~28 pounds.  It’s “luggable” but not much fun to carry for long distances when folded.  Most often I just wheel it up in front of the train and fold it before boarding.
• The 20” wheels aren’t as stable as 26” wheels – not as much rotational inertia.  Initially the bike felt a little wobbly to me, especially at speed … I’ve since gotten used to it.
• Rust – two adjustment screws for the brakes are rusting slightly, though to be fair I’ve ridden the bike a fair amount in the rain.  The Dahon Mariner is a similar configuration that promises more rust resistant components.

Summary

The bike attracts a fair amount of curiosity on the train.  I’m certain that – were I able to carry a spare bike along – I could have sold a few during my commutes.  Quite a few people ask for details on price, manufacturer, and where to buy.

Overall it has met my expectations and has facilitated my commute-by-subway.

(Thanks for reading – Steve Klinkner)