Viagra Discussions

Archive for November, 2011

Viagra Discussions

Sunday, November 20th, 2011

Viagra discussions Some commuters are unstoppable, viagra discussions and our friend Matt was going through two chains a year commuting in snowy, viagra discussions slushy, viagra discussions salty and gross western Connecticut winters. Viagra discussions He had the weather-proof solution: an 11 speed Alfine internally geared, viagra discussions belt driven, viagra discussions disc-braked super commuter, viagra discussions and I’m psyched he asked us to build it for him.

Viagra discussions

Viagra discussions I’d done one belt drive before, viagra discussions a single speed, viagra discussions but the Alfine hub, viagra discussions coupled with the desire for fat tires, viagra discussions creates some new technical challenges. Viagra discussions Belts are wider than chains, viagra discussions but more importantly they need to run perfectly straight – if not the belt will literally walk off the cog or sprocket. Viagra discussions [This is one reason for the new Center Track system, viagra discussions which allows for more flexibility]

Viagra discussions Even with chain drive, viagra discussions providing clearance for chainrings and wide chainstays can be a problem. Viagra discussions Here, viagra discussions it’s worse – the belt is wider, viagra discussions the “belt line” has to be perfect, viagra discussions and to top it all off, viagra discussions the rear cog on an Alfine hub is set in away from the dropout, viagra discussions to accommodate the shifting cable. Viagra discussions I did some fancy crimping of the chainstay, viagra discussions so here it is, viagra discussions built up with 26×2.3 tires, viagra discussions ready for action:

Viagra discussions

  

Viagra discussions

  

Viagra discussions Here are some shots of the build in process:

Viagra discussions

  

Viagra discussions When Matt and I began discussing this bike last year, viagra discussions we weren’t sure how best to break the frame (the belt doesn’t come apart, viagra discussions unlike a chain, viagra discussions so you have to be able to get it inside the rear triangle). Viagra discussions Fortunately, viagra discussions Paragon came out with a belt option for their sliding dropouts. Viagra discussions These are great for disc brakes, viagra discussions because the caliper stays aligned to the dropout, viagra discussions and for belt drive systems, viagra discussions as they have integrated tensioners. Viagra discussions Belt tension is super important for proper performance. Viagra discussions Here are some shots of the dropouts during construction, viagra discussions and of the frame before components. Viagra discussions You can see how I weld on a section of tube, viagra discussions similar to how we do capped stays:

Viagra discussions

   

Viagra discussions And here are some shots of me mocking everything up before the wheels were built:

Viagra discussions

   

Viagra discussions And some of the completed frame. Viagra discussions The Paragon dropouts are stainless, viagra discussions so I was able to polish the interface where the frame breaks:

Viagra discussions

   

Viagra discussions And some more shots before components. Viagra discussions Note, viagra discussions the bottom bracket below is just one I had lying around that I used to determine the alignment; in the complete bike pictured above, viagra discussions it’s a narrower Phil that fits properly.

Viagra discussions

Viagra discussions

  

Viagra discussions Next up: Belt drive again, viagra discussions this time a single speed! And super-lightweight S3 tubing fever! Weld-o-Rama 2011 continues!

Average Rating: 4.4 out of 5 based on 167 user reviews.

Circle A Cycles   |   523 Charles Street   |   Providence, RI   |   401.831.5221
background: arthi and katie with their brand new circle a's. (reveal)

circle a