Suntour Bar-con Control Lever

This posting is off topic from the sportif bicycle, but still relevant.  I recently had the bad luck of breaking one of the Suntour bar-con shifters I had installed on my commuting bike.  Fortunately I was able to track down another set quite quickly and for a decent price.  Since these shifters were obviously used, I took the time to disassemble and refurbish them.  Here is a rundown of how to disassemble and re-assemble one of these shifters.  First off there are a few tools that you will require for disassembly, all of which are pretty common except for the lockring pliers.  It is also a good idea when disassembling any component to try to track down an exploded diagram of the component as this clearly shows the way the parts are to line up when it comes time for re-assembly.

Suntour Bar-con exploded diagram

Exploded Suntour Shifter

The first step is to remove the shifter from the shifter body using a flat-head screwdriver.  Be sure to remove the locking nut to the left of the shifter first before attempting to remove the screw on the right side.  Next, use a phillips screwdriver to remove the shifter assembly cover.  I found this screw to be quite tight, so be sure to use the appropriately sized screwdriver and be sure to push the screwdriver firmly into the screw head to prevent stripping.

Once the shifter assembly cover is removed, there is is a clip which requires the lockring pliers to remove.  Once this clip is removed, the rest of the shifter easily comes apart.  Even with the exploded diagram for reference I still lay the parts out as them come off to remind myself how to put the component back together.  Below is a photo I took of the disassembled shifter.  Be especially careful not to lose the spring when removing the ratcheting pawl, which I found easiest to do after the rest of the assembly had been removed.

Lockring pliers ready to disassemble shifter

Once the shifter was disassembled I used degreaser to clean up all of the parts and then applied new grease generously.  BICYCLES LOVE GREASE.  One thing to note during re-assembly is that the ratchet is not reversible.  There is an engraved dot on one side of the ratchet, which must be installed to the right/facing out.  If you install the ratchet backwards, the stack height won't be correct, which makes installing the final clip not possible.  As well, if it is not obvious to users of this shifter, both shifters are identical and completely interchangeable.  After I finish cleaning up the shifter body with a bit of elbow grease and simichrome I'll post a fully re-assembled shifter.

Side Pull Brakes

As I have written in a previous post, I am keen to use brazed-on center-pull brakes with this bike.  This may only be possible if I end up going the custom route, so in lieu of center-pull brakes, I'm also looking at some single-pivot brakes as an alternative.  A problem with nicer single-pivot brakes is that they can be difficult to find with a reach suitable for mudguards and tire since they were mainly available in short reach ranges, 39-49mm.  Underneath those mudguards I'm thinking of using 700x32 wheels, so this means that I will likely require brakes with a standard reach,  47-57mm.  Of the options that I have been researching, there were some great brakes made by Shimano, Dia Compe and Suntour.  Here's some brakes that I've been looking around for so far. 

Shimano 600, br-6207, 353grams.

The Shimano 600 brakes shown above were apart of the EX group and were available from approximatley 1984-1987.  What generally makes Shimano 600 and Dura Ace parts more expensive than other groups, and this is also true amongst other parts manufacturers, is that they are generally made with a full metal construction, which means no cheap or easily breakable pieces.  If you were to compare these with say the 105 groups brakes from the same time period, you would see plastic barrel adjusters and quick-releases.  Another nice feature of these brakes is that they have recessed brake bolts, which save a small amount of weight and is more compatible with modern frames.

Dia Compe, NGC 500, 320 grams

Dia Compe was also producing very nice brakes during the mid 80's as well.  A side note, I wonder if the folks at Channel ever sued them over their logo.  Dia Compe was also producing a line called Royal Gran Compe and Royal Gran Compe II, which had more expensive finishing.  All of these models were cold-forged and weighed the same, but you could actually get them gold plated or anodized a number of different colours.  I personally prefer the polished look of the New Gran Compe line over anodized.  

Suntour Superbe Pro, CB-4100, 346 grams. 

Last, but not least, the Suntour Superbe Pro.  Pretty much in the same vein as the above two brakes, but you could consider the Pro model to be in line with a Dura Ace tiered component, where as the other two are more second tier.  This doesn't really have much bearing on my decision between these brakes, I'll probably pick up which ever of these I can find in good shape.  I do like the Shimano 600 brakes slightly more just based on the engraved logo.

Shimano, BR-R650, 385 grams

If my quest for these lovely vintage brakes fails, then I will likely go with the brakes pictured above.  They are  Ultegra level, BR-R650, Dual -pivot brakes.  A final point that I wanted to add is just to say what a great site Velo Pages is.  Their site is where I found the catalogue pages shown in this post.  I'm really glad to see that someone is taking the time to archive these difficult to find documents.