Part 1 – The Basic Elements of the SDS

Speedhound Dropout System Components

Speedhound Dropout System Components

What makes the Speedhound Only One so versatile, and how does it work with belt drive?  The key is the Speedhound Dropout System (SDS).  The main components of the SDS are the receiver and the interchangeable dropouts.  The vertical dropouts include a derailleur hanger and are machined from aluminum alloy and then clear anodized.   The horizontal (track-style) dropouts are machined from stainless steel for corrosion resistance and to stand up to the clamping forces of axle nuts.  Conventional chainring bolts are used to attach the dropouts to the receivers.

 

 

Belt Drive Close Up

Speedhound Belt Drive Close Up

Unlike a bicycle chain, a drive belt is a closed loop – it has no master link or pins to separate.  It is a single moving part.  The rear triangle of a conventional diamond frame bicycle is also a closed loop, and will not accept a belt.

 

 

 

 

 

Unless you can work some magic, http://www.youtube.com/watch?v=cCNV8rRiMRA , you’ll need an opening in the frame for the belt to pass through.  Speedhound accomplishes this trick with a split in the receiver on the right (drive) side of the frame.  The belt passes through the split and then the horizontal dropouts are bolted to the receiver.  You’re ready to install the rear wheel.  As an added benefit, the SDS lets you remove and replace a chain without breaking it open.  Voila!

 

Interested in seeing more Speedhound Belt Drive photos?  Check out our Flickr set.

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