Monday, August 15, 2011

The top step

We moved to the top step of the podium with class win in E0. Details to follow.

Monday, June 27, 2011

On the podium

On Saturday night we finished 2nd in class and 5th overall out best performance to date and easily the best race we have run in a number of areas. We are starting to get our race strategy in order, we qualified well and our stops were quick and mistake free. Tony qualified the car 7th out of about 30. The race started a little early at 6:15 so it was still plenty warm making the fuelers in their three layer Nomex pretty miserable. We gave up a couple of places at the start but got them back within the first few laps.

After the second stop we had moved up to third behind a car that had only made one stop so we were looking good. ...and here is where we learned a lesson about car classing. There are dozens of different sprint series and classes that all feed into just 6 endurance classes ESR, ES, E0, E1, E2 and E3. In our class, E0 most of the cars are from either BMW Club Racing's I Prepared class or NASA's GTS-3 class. The Club's I Prepared class has been around for over a decade so there are many fast, well developed cars available to endurance racers. NASA GTS-3 is newer and attracts smaller fields, but offers a better power to weight ratio than IP so some dedicated endurance racers have converted their cars to that spec. This year NASA's Super Touring 2 class was added to E0 and offers and even better specification.

Super Touring is pretty much wide open regarding rules, anything goes including tube-frame chasis and slicks. Super Touring 2 is limited to a power to weight ratio of 8.75:1. To reach that level we could remove 400 lbs of weight or add 47 wheel horsepower. It's going to be increasing difficult to remain competitive if we continue to race is IP specification. Some drivers are suggesting that the WERC leadership may reclassify the ST2 cars from E0 to ES -- maybe even before the 25 Hour in December. We shall see.

Anyway, back to the race. The lesson we learned here was the lesson of the fuel cell.

The M3 can run about 75 minutes when the stock fuel tank is full. The ST2 car that won was able to go over 90 minutes. That is a critical number in a 3 hour race. Half-way. They were able to complete the race with just a single stop while we had to make two. The fact that we finished only 45 seconds behind them shows that with a fuel-cell we may have done even better.

Tuesday, June 21, 2011

Enduro Update

We missed the second event in the WERC series while the engine was being rebuilt. Actually we showed up with the E30 M3, but it had some unanticipated engine trouble which kept up from racing. This weekend is the third race of the series, a 3 hour affair at Buttonwillow.

The new engine is back in the LTW and has been broken in and seem a little more powerful after the rebuild. Our goal is to finish on the podium in our class.

Here is a shot of the E30 M3 we tried to get together for the event. Great car, great engine, what a blast to drive. I'm reminded why these are my favorite M3 on the track. This one isn't pretty on the outside but it's beautiful inside.


First time racing a car without a dash-pad. The upper sheet-metal is painted flat-black to reduce reflections in the windshield but it doesn't prevent them completely. I love the digital dash with sequential shift-lights. The dash is also a complete Data Acquisition system that is wired into everything, brake pressure, throttle position, four independent wheel speeds, and all the temps and pressures for the car. Pay no attention to the J-Stock stickers, it's probably a little out of spec for that class.

This is a great cage build by Tony Collicchio of TC Design. It's a touring car style cage that ties in the front strut towers as well as the entire rear sub-frame and diff mounts. The BMW E30 chassis is pretty narrow and this car has a very large seat -- so big that at nearly 200 lbs, I have to use a foam insert to get a good fit. Tony built this door bars right out to the door skin to provide room for the seat.

Monday, April 18, 2011

First Enduro Practice

This year I'll be co-driving a BMW M3 in the Western Endurance Racing Championship. This is series of eight multi-hour endurance sports car races at tracks in Northern and Southern California. Our team is called Boulder Creek Ring.

I attended the team's first test session of the season last weekend at the Buttonwillow racetrack in the central valley. The goal was to get some seat time in the car, gain familiarity with it's systems, and -personally- to show these guys that I can actually drive. It was a great session and I learned a lot.

These tests are chock full of new and exciting things that require the driver to adjust. For me the first adjustment was the fully digital dash in the car. No traditional tach or speedo, just a single LCD screen and a bunch of shift and warning lights. Lots of data to deal with at high speed. Using shift lights was also pretty interesting. It was hard to tell when the actual redline arrives and based on data I was shifting 500-600 RPM too early to avoid over-revving someone elses race car engine. During the second session I noticed that there is a tach-like graphical display that I found much easier to use. Later in the day I gained confidence in my ability to use the lights and shifted back to using only the lights.

The LTW we are racing this year is much like my (non-LTW) 1995 M3 so I was quite confortable as I strapped in. But, as I got out on track, there were more adjustments. I have to admit that I've never had to shift a BMW into 5th gear on a race track. All my cars have had stockish rear-end ratios that use 2nd-3rd-4th on the track, but the LTW has a lower 3.73:1 diff that uses instead 3-4-5 on the track. It doesn't sound that hard, but shifting is done without thinking so I had to retrain my hand to move up-and-right instead of straight down on the straights. It took most of a session to get used to it (and also not shifting down to 2nd for the hairpin). This car has a radio system so I got to test all the gear recently installed in my new helmet which seemed to work just fine. All my driving gear was new this year as my old helmet expired last year and my fire suit was a 1997 model.

Boy have fire suits improved in the last 13 years. My old 3-layer suit weights 6.2 lbs and feels like a heavy blanket. My new suit less that 4 lbs and feels like a windbreaker. The car also has a cool shirt system that pumps icewater into the drivers suit to keep them cool. I swore that when I took the air conditioning system out of my M3 that I would get one but never did. Now having used one, I never want to go back.

We also conducted some fuel consumption tests to accurately forecast fuel use during the events. Based on the data the car consumes about 1 gal of fuel every 5 min. This is a critical measurement as fuel use is the most critical factor during the race.

By the end of the test day I was most proud of the fact that I was able to deal with all the new gear and all the little adjustments and still get up to speed quickly in a new car. By the end of the second session I was putting up times that were competitive with the drivers from last year (not "faster than"... just "competitive with") which is OK for the new guy. I also didn't wreck the car or do anything else stupid.

On Saturday afternoon, the car's owner campaigned it in the BMW Club Racing series sprint race finishing 7th overall. Saturday night was the first Enduro of the season, a 3-hour event starting at 6:10pm. Because this is a short event I didn't drive. Tony qualified the car well, 7th overall, and we had a cleanstart. The first stint was unremarkable and after about 70 minutes we brought the car in for fuel and the only driver change. We added 15 gallons and sent Tony out for a double stint. Tony is our fastest driver and did a great job moving the car up to 2nd place in class and 5th overall with a good margin before his fuel stop.

Here is where we made a little mistake -- it actually ended up costing nothing, but it's a lesson none the less.

I radioed Tony an hour into his stint for a fuel level check he estimated that there was still 1/4 of a tank remaining so he stayed out for another 6 laps. When he pitted we only had about 30 min remaining in the race but our previously agreed-upon fuel strategy called for 2 full cans of fuel. We stayed with the plan and held the car in the pits while we added the second can and sent him out again.

When I got the first Timing & Scoring update after Tony returned to the track, I realized that the extra time had allowed the 3rd place car to close to within about 20 seconds of our car. I immediately radioed Tony to tell him and he immediately responded by trimming 2 seconds a lap off his times. I'm not sure we could have stayed ahead to the end, even with faster tiems they were gaining every lap and we still had about 15 min to go. Either way, we were in for a podium, one of our goals this year. Sadly Tony radioed in a couple minutes later and sad there was a coolant temperature alarm and he was coming to the pit box to avoid destroying the motor. Thats how is ended for us, 15 minutes to go, parked in the box.

So for the next race I'm developing a simple fuel model that tracks consumption by lap and provides data about what is in the car and about how much more fuel can fit at any time. Data is Power.

Thursday, January 27, 2011

Sunday, January 23, 2011

What is a reputation worth?


Yesterday at the Barret Jackson auto auction in Scottsdale, an ambulance crossed the block for $132,000 in what is a sad display of greed. The seller claimed the ambulance was the one that carried President Kennedy's body from Andrews Air Force base to the Bethesda Naval Hospital for autopsy on the afternoon of November 22nd, 1963 and provided a number of documents to validate his claim making this a very significant vehicle. However, a dedicated group of experts and members of the Professional Car Society (a group of enthusiasts that restore and research professional cars; Ambulances, Hearses and the like) have provided unequivocal evidence that this ambulance is NOT the one to carry the President's body, and that the documents in support were likely forged, but they produced pictures of the actual ambulance being destroyed by the Kennedy Family trust in 1986.

The PCS provided this information to BJ prior to the auction and yet they did nothing to address the inconsistencies. I just watched video of the woman who won the auction claiming that she is convinced it is authentic and wondering if the Smithsonian would be interested. I'm not sure which fits better here, "There is a sucker born every minute" of "A fool and her money as soon parted". In the collector car world where reputation is everything, Barrett Jackson seem to have decided that money is more important that their reputation on this day.

Read all about it on the Professional Car Society forums HERE