At the last GGLC autocross Alex and I decided to try out a little experiment to see how your heart rate changes during the race. We used a Polar S720i to record his heart rate, an iPhone for video and a DL1 data logger to record G-force and speed readings. I used some simple PHP magic to sync the two data files together and used the Chasecam Dashware system to create this finished video.
You can see the speed, heart rate (BPM), longitudinal G (acceleration + braking) and lateral G in the dashboard on the top of the video. His average heart rate was in the low nineties while on the grid and rises to to 101 just before the start of the run. As the run progresses you can see it quickly rise all the way to 145 bpm by the end of the 45 second run. Just as interesting is the way his heart rate falls as soon as the run ends and drops to the low 130s just 10 seconds after the run. So now if anyone asks you why you autocross just say its for the health benefits
Unfortunately the video quality is not as perfect and the heart rate only updates every 5 seconds but all in all it was a successful test of the system. I have already ordered a Polar RS800CX (1 sec resolution) and I plan to run this same setup for the duration of the Lemons race at Buttonwillow next month. So stay tuned for the health benefits of endurance racing
As some of you may already know, Team Formula BMW finished in 10th place at the 2008 24 Hours of Lemons race at Thunderhill. Instead of the usual blog post with in-car video, I’ve tried something new with a video blog post of the off-track action. The goal was to create a mini-documentary that shows the Lemons experience as seen through the eyes of Team Formula BMW. It is a 25 minute video that goes all the way from car prep and transport, through tech and judging, ending with the actual race itself. My personal favourite is the section on the Tech Judging which starts at the 7:38 mark.
All the video footage was shot using a Nokia N96 cameraphone and was then edited together using Adobe Premiere Elements. A big thanks to Nokia and the WOM World folks for lending me the phone to me – I’ll post my official review of the phone in a bit. As I said before this is my first video blog post and obviously isn’t perfect. I learned a lot of things while making this video and I’ll have a future post with tips for making your own videos.
Update: We’ve made it onto AutoFiends and Jalopnik, you would think that professional blogs would be include a pingback when they link.
I was recently at the WOM World get-together in SF when we started discussing the some of the ways that Nokia should market the N-series devices, specifically the N95 vs iPhone issue. One of the things we all agreed on was that the camera on the N95 is a huge differentiator that Nokia really hasn’t been pushing as much as it should. People are so used to seeing crappy photos from devices like the Razr and the iPhone that they dont expect phones to have good cameras. I, on the other hand, have been using various variants of the N95 for well over a year and the camera is so good that I can honestly say that I will never buy a point-and-shoot camera again. People who see the shots are blown away by the quality of the images and often wont believe that they are from a cameraphone. Additionally the fact that I can use ZoneTag to upload, tag and geotag photos directly from the phone means that I upload way more photos from my phone than I ever did with my point-and-shoot camera.
So anyway, I had a quick look at some of the photos I’ve taken over the last year and have pulled out a few of the really outstanding shots to demonstrate the quality of the N95 camera – hope you like them.
One of the first really great shots I took with the phone was this shot of the wreck of the Peter Iredale of the coast of Oregon. I took a bunch of photos of the wreck but I particularly like the contrasting colours in this picture. You can also see that the photo has been automatically geotagged using ZoneTag which allowed me to do 2-click upload the photo while on vacation while also suggesting the tags “shipwreck” and “beach”.
In case you have any doubts about the print quality of the images you should check out this photo of mine that was used in a full page advertisement in SportsCar magazine. The photo was taken with an N95 classic after I spun out at the track.
One of the things that people forget is that not only does the N95 take great photos but it also shoots 640×480 video at a full 30 fps. The above video was taken at a BMW club autocross using an N95 8GB (N95-2) on my homebrew track video setup. As you can see the picture is clear and skip free. The loud rustling sound is the wind noise from the air entering the cabin once you go above a certain speed. Also check out this trackday video that I made at Reno-Fernley Raceway using the same camera setup.
The two photos above are part of a set that I took from the front row of an Iron Maiden concert in San Antonio using my N95 classic. The concert environment with its combination low light, moving subjects, backlighting and audience jostling is pretty hostile to cameras and makes it super challenging to take clear photographs.
The biggest issue for me was the time it takes for the N95 camera to both switch on and also focus on its subject. I would often click the button to capture an interesting moment but the moment would be well past by the time the camera actually took its shot. I took about 150 photos on that day and roughly 40 were worth putting on Flickr with another 40-50 worth saving. Not a very good ratio but since people were having worse ratios with high-ish end cameras I certainly cant complain. Also being a cameraphone means that there are zero questions asked when you take it into the venue
The last thing I want to share is some video that I shot from another Iron Maiden Concert (this time in Concord). This was from an N95 8GB NAM and as you can see the video is pretty damn good despite the tough camera conditions. The sound is once again the biggest issue – it just cant handle the loud noise and ends up clipping most of the audio.
All in all I can say that the N95 has a truly spectacular camera (for a phone) and it can easily be a replacement for a point-and-shoot camera. Plus if Nokia can fix the sound/clipping problems on the phone they should seriously market the N95 as a full-on camcorder replacement as well. The addition of easy uploads to Flickr and YouTube (the current Flickr share SUCKS!!!) would make this the perfect point-and-shoot photo and video capture device.
Craig from Group of Fools (Car #9) contacted me a few days ago saying that he had some on-track video from his car that included our car and asked me if I’d like a copy. After being deafened by my “Hell YES!!” he mailed me a DVD with a 10 minute video clip of their car following us around the track.
The following video merges 3 video streams for your viewing pleasure. The top and bottom camera views are from our car (#56 White BMW with a wing)). The camera in the center is from Group of Foolz (#9 Maroon BMW with a baby seat on the top). The video starts with me coming out of the pits to start my Saturday stint and by the 40 second mark you can see the #9 car right on my rear bumper. They then follow us around the track as we both go through slower traffic until they finally pit after about 10 minutes.
Major thanks to both #9 Group of Foolz for sending me the video and ChaseCam for giving us the video setup we used in our car.
Our tactics for the race were to run 45 minute stints at a healthy pace and to avoid any unnecessary contact. Guy was our first driver and got to experience the Lemons start procedure. All the teams are asked to lineup in the pits and are slowly let out onto the track for yellow flag laps. Once the whole grid is on the track, race control randomly picks a team and throws the green flag the next time that team crosses the start/finish. At this point the race is on and its every man for himself. This is a short video of the start of the race – Guy enters the frame from the left at the 40 second mark.
We were keeping up an excellent pace and were among the faster cars out there. Our pitstops, while not spectacular, were decent enough and saw Rob and Jyri taking stints 2 and 3 respectively. About 2 hours into the race, Jyri pitted and I got into the car for stint #4.
I started out pretty tentatively, this was after all my very first race in a real car. On lap 2 I started to feel really brave and tried to pass a couple of cars around the outside of the banking. While I did end up going around the cars, I was unsighted going into the esses and found that someone had dragged quite bit of gravel right at my braking/turn-in point. This being Lemons there was no debris flag and I basically had two choices: a) squeeze the car on my left and attempt to avoid the gravel with the possibility of getting broadsided if it doesn’t work out and b) hit the freestanding tire barrier and hope for the best. Having seen other cars hit similar barriers without too much drama, I decided on option b and hit the brakes which locked the second I hit the gravel.
As you can see I hit the barrier with a glancing blow and knocked them over. You probably also saw that there was a third option available – turn right, avoid the barrier and skip the esses. Unfortunately I didn’t think of it at the time so that route really didn’t come into play. After the it the car seemed to be working fine and after slowing for a few corners I continued on my merry way. The following clip should give you a good idea of the action we encountered on track. Watch the grey Subaru wagon (Team Scooby) as it tries to pass me, it was one of the fastest cars on the track but I kept getting him stuck behind slower cars until he finally passes me two laps later
About 30 minutes into the session I came around the banking and was about to pass another car when the back end of the car suddenly let go and spun me around. Luckily the car missed the tire barriers and ended up facing the wrong way on the inside of the first S. I tried putting it in neutral to start the engine but the gearshift had sunk about 6 inches lowers and I could not change gears. I tried starting it with the clutch in but only got an loud banging noise from the transmission with no forward movement. I then sat around waiting for the tow truck and watched cars coming head-on towards me at race speed – I even had one guy blow the turn and drive across the front of my car. After a few minutes the race was yellow flagged and the tow truck pushed me into the pits with the transmission making loud banging noises all the way.
When I came into the pits, we got down to diagnosing what was wrong with the car – the transmission was obviously busted but we didn’t know how or why. When we opened the hood we saw a most interesting sight, the radiator was bent outwards rather than inwards. It appeared that when our car had any forward contact (such as the tire barrier I hit), the engine was actually flexing the engine mounts and moving far enough forward in the engine bay for the distributor to hit the back of the radiator. This motion kept pulling the transmission forward until the transmission mounts finally snapped. At this point the transmission stressed the driveshaft enough that the two piece driveshaft just separated at the joint. /the driveshaft snapping was most likely the cause of the spin – it was equivalent to lifting mid corner which produced lift-off oversteer with no drive to allow recovery. Our car was now officially dead and we did not have any spare parts to fix it.
Enter our in-team mechanic: Rob Dietsch of Dietsch Werks. Now Rob usually spends his days doing high quality repair work on his customers cars, this obviously was NOT the time for quality work so he settled for quick and dirty fixes (emphasis on quick ). He started out by removing the two pieces of the driveshaft and used a hacksaw to clean out the joint between the two pieces before mating them together once again. We did not have any spare transmission mounts so he fixed the transmission in place using straps and bolts passing through holes drilled in the car floor. The final piece was to anchor the engine in place using chains so that it would no longer move forward if there was any impact.
The repairs took about 2.5 hours and dropped us to 62 place in the standings. Rob took the car out first to see how it would hold up. He put in some good times before handing it over to Jyri for the final stint. By the end of the day the car had suffered only minor body damage and was still putting in some excellent times. We were just glad to be running at the end of the day despite having such potentially race ending damage to our drivetrain.
P.S.: If you have nothing better to do and want to kill a full 30 minutes you should watch this video of my entire stint.
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and I basically had two choices: a) squeeze the car on my left and attempt to avoid the gravel with the possibility of getting broadsided if it doesn’t work out and b) hit the freestanding tire barrier and hope for the best. Having seen other cars hit similar barriers without too much drama, I decided on option b and hit the brakes which locked the second I hit the gravel. 
