Posts Tagged ‘bicycles’

Rack sketch from 2011

March 7th, 2015

Design for a small rack on the Rawland rSogn planned before I bought a Haulin Colin rack.

Categories: Bicycle Projects, Making Stuff, Rawland rSogn
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cat chain ring design

September 27th, 2013

Thanks, Joe for sharing.

I like this:

From here.

(My posts are quickly falling into frivolity.)

Categories: Bicycles, Web finds
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Russ’ SR Semi Pro

April 28th, 2013

Over the past couple weeks, Russ and I used free time to overhaul his blue SR Semi Pro. It is now complete. Along with Branden, we took a Saturday afternoon shakedown ride to The Shack in Playa del Rey where we ate burgers, enjoyed a Ranger IPA and chatted with an interesting young man who claimed his office job was rating online porno films. Anyway, about the bike…

For casual use, I suggested ditching the gears. After a few tests, Russ settled on 40 x 17, or around 64 gear inches. I like the higher cadence of my Takara, which is set at a lower 55 gear inches. We maintained a similar pace on the ride.

To switch to single speed, we purchased a cog and spacers kit from Crow Cycle to convert the cassette hub (not original). Other improvements include:

-Panaracer Pasela 700Cx35 (replaced the heavier 28mm Vittoria tires)
-Standard Brooks B17 honey saddle
-Velo Orange Milan handlebar
Velo Orange alloy chainguard (The 44t model fit the 40t chainring well.)
-Velo Orange brake cables and blue housing
-Velo Orange Kraton basket weave grips to match the saddle
-cheap alloy pedals (also from Crow – surprisingly nice quality)
-chrome single chainring bolts
-swapped the seat post with an SR rain catcher Laprade from my spares
-overhauled bottom bracket and headset

Edit: We will rotate the tires to align the label with the valves. Whoops.

Here’s the bike before the work.

Categories: Bicycle Projects, Bicycles
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Bikes from my past – Ross Piranha, c.1985

April 28th, 2013

I had the silver/black one with gray grips, bear trap pedals, pads as shown here as 142-3325. I melted a hole through the hard plastic seat with a magnifying glass. This s why I can’t have nice things. I believe it was purchased at John Adams Schwinn on 12th Street in Erie, PA.

I loved it.

Image source: Velo Base

Categories: Bicycles, Bikes from my past
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April 25th, 2013

Is this really the only photo I took of Russ’ bike overhaul project last Saturday?

More to come…

Categories: Bicycle Projects, Bicycles
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rSogn update

February 9th, 2013

Updated saddle and rear derailleur.

Categories: Bicycles, Rawland rSogn
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cad overlay bike geometry

August 19th, 2012

I photographed each bike to compare seat and handlebar positions. For fun, I took it a bit further and traced frame center lines.

Note/Disclaimer: the fork rake and trail measurements are not reliable as I did notice some minor distortion. Actually, I doubt any measurement is all that perfect.

I am surprised to find the Panasonic has the steepest seat tube, and the trail is higher than I imagined. Also the Panasonic feels it needs more seat setback; this exercise helped to illustrate that.

The rSogn is very close to spec (aside from fork rake). Not shown is the 65 mm bb drop, which is spot on when measured in AutoCAD.

Categories: Bicycle geometry projects
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bikes in a row

August 19th, 2012

I photographed my bikes to compare geometry. Here’s a collage of each in a row.

Categories: Bicycle geometry projects, Bicycles
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1977 Takara

August 10th, 2012

1977 Takara 731.

Categories: Takara
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Rawland rSogn

July 8th, 2012

Medium Large Rawland rSogn. Recently added Salsa Cowbell 3 handlebar and Apex-3 cranks, 42-28. Using 118mm bottom bracket, the q-factor is very narrow at 138mm. The crank arms clear the frame with a few millimeters to spare.

Categories: Bicycles, Rawland rSogn
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