Archive for June, 2003
Impending Failure
For you bicycle tech heads — what is the expected result of 36 hole, 14 ga spokes, a 390 gm hard anodized ceramic rim with single eyelets used on the rear wheel of a tandem?
Something like that, I’d imagine. I thought that I heard a pop on my last ride that sounded like a spoke letting go. Around 1/3 of the circumference, the drive side spokes have pulled the inner part of the rim away from the rest of the sidewall. 6 cracks are clearly visible, I suspect others. This looks like brittle failure to me, probably after a sufficiently large crack initiator formed. I’m guessing that there has been about million cycles (1200 miles), which could put it into the fatigue category. I don’t have any of my materials references handy though, so that’s just a guess.
I have had single eyelet Mavic rims do something similar to this on my road bike, but that was with the old MA rims. They were made out of a softer metal, not hard anodized, with a much more square profile. That rim just pulled a small section of the inner box wall out in a rather slow, progressive failure. This one seemed a little more dramatic.
I want the next rim on this thing to be T6 aluminum, not hard anodized, and double eyeleted. If I can find something even close, I’ll be suprised. A lot of bike wheel parts these days are designed for style — that’s the last thing that I need. Bit I’ll end up with whatever the shop decides to put on, since they are doing this on a warranty basis.
No commentsSolstice Parade
I shot a couple of batteries worth of pictures from the sidelines of the Solstice Parade in Fremont yesterday. Lots of painted cyclists and dancers. A bunch of puppets on sticks. And just a little nudity. The gallery is here.
fremont solstice 2003-26-pt
The dark side of the force
No commentsfremont solstice 2003-17-pt
tiki stroller
No commentsPics from the Meetup
Impressionistic.
Less impressionistic.
Small Flash, Big Blink
Me, Rose, and Jerry.
Some other faces in the crowd.
Yer basic Seattle Weblog Picture.
Redesign
I need a redesign. I need a long. slow. redesign. (no, not a root canal. had one, it wasn’t that bad. lots of novacaine.)
3 years 6 months, 3 oses, 5 webserver machines, 1 url and 1 design. I’ve added css here and there – removed a column or two from the table structure, flipped the logo over, but nothing terribly noticable.
I’d like it to be CSS, I prefer validation, I want more white space, and it has to work in MSIE4.5/Mac and current modern browsers (Safari, Moz, and IE6/win). IE4.5 is a wierd requirement and may require browser sniffing, but I’m not going to make those 2 readers upgrade. Cause then I’d have to support their new configuration. And I don’t want that.
No commentsSome pictures from Seward Park
Went for a little ride yesterday to take advantage of the car closure of Lake Washington Blvd. Once we got to Seward park, we found a bike race. So I burned a few electrons and shot some pictures. It’s quite hard to get my digital camera to actually get the cyclists in the frame, I found it easiest to use the sequential shot feature and take five in a row, just to get one well composed.
This was the early leader. He got well off the front in the first few laps when the pack wasn’t really interested in chasing.
The rest of the pack
And more of it.
A few riders have caught the leader. They’re looking back down the hill they just climbed to see the gap they have. This is the only tight corner on the course.
Some riders in the pack jump to close the gap.
Strawberry Harvest
Picked some strawberries yesterday, about a quart. That one harvest may be my best year yet. This is the second year in this bed, so I think the sun and the soil are contributing to the bounty.
I’ve figured out a few things the hard way:
- Plant in an area with full sun.
- Water every few days in May.
- Fertilize (lightly) every week in May.
- Netting keeps the birds and squirrels out.
- They get better the second year in the ground.
Some of the berries are perfectly red, juicy, and sweet, some are kind of flavorless, some are a bit tart, and some have that industrial strawberry flavor that I’ve never tasted in a real berry before.
No comments
Resume – Eric Soroos
email: my first name at this domain
location: Seattle WA
Employment History
- IDM Services/Western Clearing Corp – Developer (4/2004 – )
Designed and built a Transaction Gateway for Credit Card, ACH, and Check21
transactions, including a web application for merchant control and reporting,
a Windows desktop application to capture and upload check images from scanners,
and submission and settlement backend drivers for many upstream providers.
Wrote parsers and generators for ACH, X9.37, and BAI2 files. - Contract Consultant (4/2003 -)
I do ongoing system administration and special project contracts for clients
that have an investment in the Userland Frontier platform. - Social Ecology – Lead Developer and System Administrator (11/1999 – 4/2003)
First full time employee, responsible for developing knowledge
management and email contact relationship management software.
Released 6 versions of the CRM application, from initial 1.0
release, through several point releases, to a 2.0 rewrite. Managed
all network and IT operations for an Application Service Provider,
including web and email hosting, database services, firewall, DNS,
and server monitoring. -
KPFF Consulting Engineers – Design Engineer (8/1997 – 11/1999)
Civil/Structural engineer (EIT level), responsible for analysis,
production design and Finite Element Analysis modeling. Most notable
projects included the Weller Street pedestrian bridge and the
Evergreen Point floating bridge post-tensioning retrofit.
Skills
- Python – 2 years
Built a Windows desktop application (using wxPython) to drive check scanners.
Used Python to build parsers and generators for several banking industry file
formats: ACH, BAI2, and X9.37. Used Python to submit transactions to upstream
processors using SOAP or other web services. -
PHP – 3 years
Built the Transaction Gateway web interface using PHP. This interface is used
by Merchants to control all aspects of the transactions that they are sending
for payment. Technical highlights include an Object/Relational Manager (ORM)
base object, integration with OCR and Image processing and a generic xml
web service for sending transactions or querying the system. -
PostgreSQL – 5 years
Used PostgreSQL as the data store for the Transaction Gateway. Used stored
procedures, views, and native permissions to enforce data security. Includes
column level automatic encryption of data. Ported a contact relationship
management system from a Frontier native object database to PostgreSQL. -
Apache – 6 years
Configured and managed Apache for hosting most of my projects
over the last few years, relying on proxy, rewrite, ssl, and gzip
modules. I have recently moved to Lighttpd for resource constrained situations. -
Userland Frontier / Radio Userland – 7 years
Experience ranges from static website development to web delivered
knowledge management and email contact relationship management
applications. Integrated Frontier-based applications using Manila,
Mainresponder, and the Website Framework with external components
using XML-RPC, SOAP, HTTP POST/GET and direct SQL access. -
Perl – 2 years
Used Perl to automate the generation of Finite Element Analysis
models and the post-processing of resulting data. Also used in many
day-to-day system administration chores at Social Ecology, but
has not been a primary development language. -
Linux – 8 years
Administered Debian Linux for 3.5 years as the primary system administrator for
Social Ecology. Have continuously operated Linux machines for personal server use since 1999.
Currently use Debian stable on servers and Ubuntu on the desktop. -
OSX – 5 years
My desktop operating system of choice. Deployed as a public web application
serving platform since version 10.0. -
Other –
AJAX, HTML, CSS, XML, Web Services, WSDL, Objective C, Java, Lighttpd/FastCGI
Education
- MS Civil Engineering – University of Washington
- BS Civil Engineering – Cornell University
References upon request