Archive for the ‘Photography’ Category

Modifying a Campagnolo Cog

Posted by Mr. Leslie Wong On January - 16 - 2013

Grinding the splines on a Campagnolo 10 speed compatible cog

 

After building a new wheel and acquiring a new 13-26 Campagnolo Record 8 Speed Ultra Drive cassette, I needed to change the cog in the final position from a 26 tooth to something larger so I could have a lower gear for hills. My normal ride has a Category 3 climb, according to the Tour of California’s rating of bike climbs. There is also a short 9.5% grade that I dread every time I get there, so the extra 2.6 gear-inches makes a difference.

I couldn’t find an 8 speed Campagnolo cog larger than a 26 tooth but there seemed to be Miche (Campagnolo 10 speed compatible) cogs with 27, 28 and 29 teeth for sale on eBay. According to every source I found, Campagnolo 10 speed cogs would not work on an 8 speed hub, mainly because the splines are deeper and there is a stepped-ridge on one of the splines. That’s where the Dremel cut-off wheels come in. After a few minutes with the cut-off wheel and some chamfering of the splines with a file, the 10 speed cog was now 8 speed compatible.

Campagnolo Record Hub

Posted by Mr. Leslie Wong On January - 13 - 2013

Cracked Campagnolo Record Hub with hairline crack

 

Mavic Open Pro CD rim with Campagnolo 8 Speed Hub
Mavic Open Pro CD rim with Campagnolo 8 Speed Hub

I have been using Campagnolo Record hubs since the I started buying Campagnolo components in the early 80′s. When cassette hubs were introduced, I stayed with freewheel hubs because of the 126mm drop out spacing on my De Rosa.

I’ve also been using a Shimano Dura Ace (Hyperglide) freewheel because of its good availability. The center to center spacing (5.0mm) and the thickness of the cogs are very similar to the early Campagnolo 8 speed according to Sheldon Brown’s Bicycle Frame and Cassette Spacing Crib Sheet. The Shimano freewheel also works very well with the Campagnolo Record Syncro downtube shift levers that I use with a 7 speed insert.

This was all fine until the rear hub developed a hairline crack at one of the spoke holes. Instead of buying a used Campagnolo freewheel hub, I decided to find a used Campagnolo 8 speed hub. This seemed the most economical route as opposed to buying new Campagnolo Ergopower controls, a new rear wheel with a Campagnolo Record hub, new 10 or 11 speed sprockets and a new derailleur.

The 8 speed hub I bought on eBay had clean bearings and races when I disassembled it so I just cleaned everything up and added new grease. I bought a Mavic Open Pro (CD) rim and laced it up this afternoon. I managed to buy a new Campagnolo Record 8 Speed Ultra Drive cassette on eBay so my 30 year old De Rosa is back in business with a 20 year-old shifting system.

Magnolia Tree, Blossoming

Posted by Mr. Leslie Wong On January - 1 - 2013

Magnolia Tree, Blossoming

 

I saw this on my bike ride a few days ago. I don’t understand the mechanism that makes this magnolia tree blossom in winter, but it seems appropriate for a new year.

Bird Nest Basket with Chili Pepper Lights

Posted by Mr. Leslie Wong On December - 24 - 2012

Bird Nest Basket with Chili Pepper Lights

 

Bird Nest Basket Gift of Laura Resen

Sunita Williams Gives a Tour of International Space Station

Posted by Mr. Leslie Wong On December - 23 - 2012

Shimano pedals on the ISS exercise bike
closeup of Shimano pedals on the ISS exercise bike
Nikon cameras and lenses on the ISS

Sunita Williams gave a video tour of the International Space Station a few hours before her return to earth on November 18, 2012. I found it fascinating because her tour gives a great sense of the layout of the interior of the ISS and what it actually looks like. Also, in a weightless environment, the meaning of up and down have different definitions.

There were a couple of things that were especially interesting to me. When the crew uses the exercise bike, they don’t need a seat because they don’t sit down. They use clip-on pedals to hold them to the “bike.” The pedals look very similar to the Shimano road pedals that I use on my De Rosa. The exercise machines need to be isolated from the walls of the space station so they don’t put any forces into the structure of spacecraft and solar arrays.

When Commander Williams entered the Russian segment where Service Module Central Post of the space station is located, there was a nice assortment of Nikon photography equipment on both walls.

America’s Children’s Holiday Parade

Posted by Mr. Leslie Wong On December - 11 - 2012

13th Annual America’s Children’s Holiday Parade

 

The rain held off until the end of this year’s 13th Annual America’s Children’s Holiday Parade on December 1, 2012 in Oakland, California. Unfortunately, there was no helium for the balloons.

Dungeness Crab Report November 2012

Posted by Mr. Leslie Wong On November - 16 - 2012

Dungeness Crabs

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Commercial crab season opened yesterday in California. Live Dungeness crabs were $3.99/lb at Lucky Seafood Market #2 in Oakland, CA.

Price on December 11, 2012: $5.99/lb
Price on December 14, 2012: $4.99/lb
Price on December 16, 2012: $4.69/lb
Price on December 22, 2012: $8.69/lb
Price on January 6, 2013: $4.99/lb
Price on January 7, 2013: $3.99/lb
Price on January 18, 2013: $3.99/lb
Price on February 9, 2013: $4.69/lb
Price on February 23, 2013: $4.99/lb
Price on March 26, 2013: $4.99/lb

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About Me

I like Alfa Romeos, art, backpacking, barbecue, baseball, bicycling, cars, cigars, computers, cooking, eating, electronics, fly fishing, football, Formula 1, friends, golf, horology, jazz, movies, museums, photography, r/c cars, r/c helicopters, reading, restaurants, Scotch whiskey, softball, slot car racing, tennis, the internets and travel

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    Dragon, San Francisco 2013 Chinese New Year ParadePhil Wood Spokes, Campagnolo 8 Speed HubRaspberry Pi WebcamAltoids tin, MintBoost 3.0MintBoost 3.01979 Alfa Romeo Sprint Veloce1978 Ducati 900 Super SportLancia Flaminia SportDe Tomaso MangustaDe Tomaso Pantera EngineLamborghini Gallardo SpyderAlfa Romeo Alfetta GT