Tag Archives: Schlumpf

SRAM 1x Drivetrain

A recent Trike Asylum blog entry entitled Eulogy to the Front Derailleur inspired me to do a little more thorough investigation of SRAM’s challenge to the front derailleur.  Steve gathered a couple of pretty funny videos on the topic, it’s worth checking out the link.

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Recumbent Belt Drive

Now that I’ve seen belt drive in action on a couple of “city bikes” in town, I can’t seem to let this one go.  On an upright bike, belt drive is smooth, reliable, light, and silent.  On a recumbent it has the potential to solve what for many is their bane:  a long, greasy, noisy, unwieldy chain.  This post is my attempt at taking a closer look to see what might be preventing the adoption of belt drive for recumbents and, specifically, ‘bent trikes.  I’ll discuss the issues I see, many unique to ‘bents.  Then I’ll see if I can figure out what it would take to adapt my current trike to belt drive. Continue reading

Gearing

It’s a fact that a typical ‘bent needs wider and lower gearing than a typical upright bike.  Just how much wider and lower is a subjective, sometimes technical, and oft’ debated topic that can make large chunks of time vanish.  I’ll try to keep this brief.  I use Gear Inches in the following discussion because it is commonly used in trike specifications and it provides a good way to make relative comparisons between drivetrains.  Consult a Gear Inch Calculator to see how Gear Inches translate into speed.

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Unconventional

I guess anything under the recumbent banner could be considered unconventional but I think I’ll be pushing into particularly rare territory for this build. My goal is a machine that will be equally comfortable on tour or commuting to work; fun to ride, easy to maintain, impervious to weather. Fast, relatively lightweight, simple, at least externally. Here are some of the characteristics I think will get me the closest. Continue reading