Oregon Manifest Constructor’s Design Challenge

So what can happen in a month and a half? A lot! First off, I built a bike for another Dave W. This time it’s for Dave Wilcox. He’ll be racing it in Portland, OR for the Oregon Manifest Constructor’s Design Challenge. The bike was specifically designed for the 77 mile Oregon Manifest Constructor’s Race put on by Rapha while incorporating all the design specifications given to the builders. The specs are as follows:

1. Truly sensational solution
A genuinely unique and innovative solution for transportation use. Amaze us.

2. Handling
The bike must handle equally well with and without load. Both options will be tested against turning and straight pedaling.

3. Integration
Design solutions should be integrated into a complete and harmonious whole, rather than a checklist of details.

4. Presentation and Execution
Fabrication refinement and final presentation are important indicators of skill and thoughtfulness. Extraordinary craftsmanship can be displayed equally well in the simplest brazing or the fanciest lug. Individual design solutions should build to a single visual and functional whole.

5. Overall response to the course and challenges
Entry bikes must take into consideration all elements of the race course, the 10 design considerations and the overall challenges they present.

6. Load carrying
Bikes must accomodate and securely carry the rider’s award ceremony party attire, a provided 6-pack of beverage (in glass bottles), and a provided small container of party snacks.

7. Security
Bikes must be protected from theft while unattended. A smart, easy solution for securing the bike under different conditions is expected.

8. Portage
Bikes must accommodate being carried by its rider over a section of the course.

9. Utility
Bikes should accomodate the expected need for changing weather, lighting conditions, and visibility. We know that you know what this means.

10. Quality and Rattles
If elements are loose, rattling, or otherwise inoperable at the race finish, points will be deducted for each failure.

So did I meet all of those criteria? I like to think so. The parts that I could’ve focused more on are the lights and lock. Dave was very understanding and went with some clip on lights and a standard mini Kryptonite u-bolt lock. Jon Bailey of Baileyworks went above and beyond the call of duty by creating a custom front rack bag for this project that has an integrated lock holder similar to the Errand Bag he’s been working on with Capricorn Bicycles for their awesome Errand Rack. I have to be honest and say that I haven’t seen it yet! Jon shipped it straight to Oregon for us. He rules so I can only imagine this bag does too. So here are the details on the bike:

• Two spokes were forged and brazed onto the chainstay as a chain slap protector.
• Spokes were used as the cable guides on the BB.
• Internal cable routing for the rear brake with yet more spokes as reinforcements at each end.
• The STI down tube guides are a couple of “diver bell” cable stops tapped out for some stainless adjusting barrels.
• The seat tube sleeve was carved on the front and back to match the head tube rings and fork crown.
• The fork crown is a modified Long Shen LC15 to match the head tube rings.
• Racks are fillet brazed from 5/16″ x 0.035″ chromoly. They are specific to the SRAM Force short reach brakes.
• Fenders are Honjo alloy painted to match. I fabricated an integrated tire sweep on each fender that is activated by a button on the outside.
• The stem is a fillet brazed custom with double recessed bolts.
• Paint is a custom red mix.
• The painted valve caps were a bit over the top.


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See the full slideshow.

Next week, I will have finished the next bike which is a fillet brazed road/commuter for Josh. It’s getting the final swipes of the file now and will be going into the booth for paint very soon.

12 thoughts on “Oregon Manifest Constructor’s Design Challenge”

  1. Super nice. The first things I noticed when I saw it on bikeportland’s website were the tire sweeps; but my favorite touches are the use of the spokes as guides, protectors, and reinforcements. Overall gorgeous. A truly functional masterpiece.

  2. Uhh, we need to talk. I’ve been searching for a custom frame maker for a new bike and when I came across this my mind was made up. It’s pretty much what I had in mind. It’s really beautiful!!

  3. It was a pleasure meeting David at OM. Way to double up and race cx at alpenrose. Take care. Mike Kath

  4. Brian, looks amazing.

    No one mentioned that Dave, atop the Circle A, took 2nd at the Constructors race. So… lets let that speak for itself.

  5. I think there is a bit of modesty going on here. Yes, this bike was ridden to a top 3 finish in the race. As important, it was the only bike in the top 3 that also took one of the 12 Design Challenge places. I posted a photo of this on my Brooks Saddles group page on Facebook. That photo was from my work covering the event for bikeportland.org. It’s a beautiful bike and I, too, especially liked the tire sweeps. Those are always welcome to those of us who have far too many sew-up tires hanging in the basement. Nice ride!

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