Raceday timing system upgrade

One of the BAA’s biggest goals this year was to use our human and financial resources to improve on the timing system we use in buggy.  After all the work that teams put into buggy, there is nothing more important than accurately and reliably recording their time (ok, safety is always more important … blah blah blah).  We’re running a race against the clock here, we’ve gotta be able to trust the clock.

Last year, the company sweepstakes has paid to do the timing for 20 years showed up to raceday short on staff so the BAA helped out and filled in.  What we got was a close look at the system in use and a big list of things we’d like to see improved.

What we are improving on

Technology weaknesses

  • Starter gun failures : as we’ve all witnessed, the starter gun has a failure rate of 2 -5 times per year.  This results in confusion and inequitable starting conditions for the teams that are affected.
  • Starter gun – timer synchronization : the current system relies on someone pressing “start” on a timer box when the gun goes off.  This introduces unnecessary human error on one end of the timed period.
  • Finish signal failures : the system buggy has relied on for the past 10+ years uses an RF transponder in each buggy and a wire loop (in a mat on the road) that detects those transponders when they pass by.   If a buggy crosses the line and no signal is detected, there is no recourse other than using the manual stopwatch backup times.  Some buggies are more prone to missed signals than others depending on material choice and thickness and transponder location.  Nobody deserves to have their time missed.
  • Transponders are inconvenient : Sweepstakes has to orchestrate the distribution to every team.  Teams have to find a place to secure it that doesn’t interfere with the driver or the steering.  Raceday is no time to add parts to a buggy.
  • Inaccuracy of the crowd-facing clock : the big black and yellow clock is manually matched to the official time as it is running, usually a minute or so into each heat.  This means that the time people see when the buggy crosses the line is highly unofficial, and has been off by large margins in the past.
  • Delay in reporting official times : because it is somewhat time consuming to recall official times from the current system, the times posted on the leader board are usually the backup manual stopwatch times.  In very close races, this could result in a reversal of rankings once the official times are known.

Personnel weaknesses

  • Rotating staff : because the company previously contracted often has other races on the same weekend, the same timers are not always available for prelims and finals.  This discontinuity introduces opportunities for error when it matters most, on finals.
  • False start enforcement : outside timing professionals have not in our experience been sufficiently knowledgeable about the rules and procedures of a buggy race start.  Because none of the sweepstakes committee is in the immediate vicinity of the start line, the starter must be able to manage false start and restart situations in accordance with the rules.

The new solution

Continue reading

Rolls Statistics Fall ’09

With another semester in the history books, it’s time for the BAA to play historian/statistician and make note of a few numbers that sum up the semester.   As with the last edition of rolls statistics, the idea is just to document things and to give the orgs and sweepstakes some feedback on how things are going.

Fall 2009 (with the previous 2 semesters for comparison) looked like this Continue reading

Composites Forum Today

This is from John Thornton, former Fringe head mechanic and current employee in the Robotics Department who is developing a long-needed center for composites. There is a forum today on campus at 4:30. See the full details.

Composite technology has long been an underground phenomenon at Carnegie Mellon. It is now time to bring this movement into the open for the first time.

Please join the newly formed Composites Development Center, part of Carnegie Mellon’s Field Robotics Center, as it hosts Carnegie Mellon’s first Composites Forum this Monday, November 4, from 4:30 to 6:15 p.m. in Newell-Simon Hall room 1305. The discussion will feature NASA Senior Advisor for Composites and Structures Mark Shuart, as well as an overview of the Composites Development Center, Sweepstakes (Buggy), the Society of Automotive Engineers, and the Solar Boat project team. The Composites

Forum will be an opportunity to engage in a discussion about the evolution of composites development at Carnegie Mellon, current research and projects, and the future of composites technology and education at CMU.

Please forward this information along to anyone you think might be interested in composites development, current NASA projects, Buggy, SAE, or the Solar Boat project. We hope to see you there.

***Event Recap***

What: Composites Forum at Carnegie Mellon
When: Monday, November 9, from 4:30 – 6:15 pm [Pizza will be served]
Where: Newell-Simon Hall Rm. 1305 on Carnegie Mellon’s Pittsburgh campus

Thank you,
John Thornton and the Composites Development Center team
Field Robotics Center
Carnegie Mellon University

Driver tank tops available from Sweepstakes

Sweepstakes is making and selling a run of driver-specific tank tops, and they were nice enough to ask if any alumni or other cmubuggy.org readers would like one while the order is going in.

Click on the thumbnail to take a look at the full design.

  • On pre-order now for $11
  • expected to arrive in 2 weeks
  • specify size: women’s S or women’s M
  • can be picked up at rolls or mailed to you
  • email sweepstakes chair, Jess Thurston to order –> jessicathurston532@gmail.com

Rolls efficiency statistics 2009

As we start a new year of rolls with a new sweepstakes committee, I realized that we computed some stats on the number of rolls in the fall of last year, but forgot to follow up on that in the spring.  The idea with these stats is just to give sweepstakes and the orgs some feedback on how well their partnership is doing at getting buggies around the course.

So here is the summary for the 2009 buggy season: Continue reading

Orgs come, orgs go

Most years in buggy see the birth, rebirth, or death of an organization but the transition from 2009 to 2010 is looking busier than usual.  We hate to see anyone go, but it looks like the net migration might come out even or positive this year, so hopefully we can stay right around 50 teams on raceday.  The more the merrier.  Here’s the breakdown …

Continue reading

More paving – this time Hill 1

CMU’s Parking & Transportation Services just sent out a campus-wide e-mail announcing that Tech Street (hill 1) will be repaved starting next week.  Looks like the letter writing and phone calling by sweepstakes and others was effective.  Thanks guys.  Let’s hope they go all the way up past Frew Street and fix the gnarly seam that runs across all three lanes.

So we’ll be back up to heats of 3 next year, and it can only make those hill 1-2’s faster.  As if these kids need any more help throwing down fast times.  They’re just making us alumni of the last 20 years look bad now.

Thanks Pittsburgh!

Buggy Books of History Countdown : T-0.3

Oops! With the chaos of getting the auction ready last week, I wrote half of this and forgot to finish or post it. I’m sure all of you out there were waiting anxiously to complete your collection, so I apologize for the delay.  Here is an abridged version of the narrative.

All of the buggy books (starting with 1965!) are scanned and the DVDs are burned so it must be almost raceday.  Indeed, this is our last post in the Buggy Books of History series.  Make sure to find us at design comp or at our reception on the Skibo Gym lawn after the races on Friday and pick yourself up a copy of the DVD.

The weather was perfect on both Friday and Saturday: sunny and reaching 73F before the last heats of the day.  That’s the sort of weather that is supposed to produce record breaking races, and the teams did not disappoint.  The 1988 record that spat in the face of so many good teams finally fell and was beaten four times in two days.   In the end PiKA kept their win streak alive with a margin of victory of only 0.15 seconds over SDC and a new record 1.85 seconds better than any raceday before.  Just to underline things, SDC broke the women’s record pushing the bar further below the previously elusive 2:30 mark to 2:28.84.

Buggy Book 2008

Comments in the forum

Major history data upgrade

Just in time for our first raceday, the Buggy Alumni Association’s database of buggy history has been seriously upgraded over the lat couple of weeks.  Major accomplishments include:

  • The entire backlog of history contributions has now been processed and added to the database.  Thanks so much for your contributions so far, and sorry that it took us so long to add them into the system.
  • Additional data from past buggy books, the History of Buggy presentation, and old Tartan records has been added such that we now have full records of times and places going back through the 80’s and times and places for the top 5 or 6 going back through the 60’s
  • Having more complete data allowed us to add more data to the organization pages.  You’ll now see a summary of the last 20 years of places and times for each organization
  • Similar improvements to the Person and Buggy pages reflect more of their individual histories

So check it all out in the History section

Having this much more data in the system opens the doors for you to help us find errors and fill in holes in the data.   To streamline things a bit more, we’ve added standardized forms for Race, Organization, and Buggy data.  Check those out on the Contribute Data page

Huge thanks to Scott Ziolko for doing the hard dirty work with all of the data for this update.  We never would have been able to work through the backlog without him.