That's right. Less than three weeks after shipping RaceTrace v1.3, we've released v1.4. Just some bug fixes, you're thinking? Nope. We just couldn't wait any longer to get you our most-anticipated feature since launch -- sharing. I don't just mean Facebook sharing; we've had that. I mean you can now share an entire session's worth of data with your friends in just 2 taps. You can compare your friends' laps next to your own, overlaid, showing you exactly where you need to catch up and where you're kicking butt!
To share a session:
1. Select the track and tap Session Data.
2. Tap the orange header of the session you want to share.
3. Tap the share button in the lower-right corner.
4. You can share via AirDrop if both you and your friend are running iOS 7 or later. You can also share via e-mail. Your friend should tap the file attachment in the email, then tap the RaceTrace icon.
NOTE: Both parties need to be running RaceTrace v1.4 or newer to share.
Now you can both learn from each other and go faster!
A lot of work has gone into bringing you the latest RaceTrace release, v1.3. There are several major improvements, some obvious and some subtle. In the obvious category, we bring you:
More subtle, but important enhancements include:
This new update is now live in the App Store, so go get your update!
We got a crew together at Jim Hall Karting in Ventura, CA last weekend. The staff was friendly and fun. It was my first time karting there and we had a blast trying to beat each others' lap times.
We ran RaceTrace with an external Dual GPS. We were glad did, because the track's timing sensor wasn't working very well that day. It would sometimes miss several laps per session. When the sensor did register the lap, the average error of lap times measured by RaceTrace was only 0.038s, meaning RaceTrace measured lap times accurately within 4 hundredths of a second!
RaceTrace is much more than a lap timer. Its true power is pinpointing areas for improvement. My friend Erik's fastest lap was 1.25s faster than mine. How could I improve my lap time to beat him? Let's use RaceTrace to find out.
To start with, let me introduce the "time gap" graph to the right. The green region shows how much time I'm behind Erik throughout the lap. The first thing I noticed is that the graph jumps up in two places. Of the total 1.25s I lost over the course of the lap, I lost about 1/2 second each in 2 very specific places. But to where on the track do those jumps correspond?
In the screen on the left, I've turned on the track map and speed graph overlays. I've scrolled the graph to the point where the vertical orange line is over the first major time loss. The vertical orange line always corresponds to the short orange line on the track. Now I can see exactly where Erik gained the first 1/2 second on me. And to see how, just look at the speed graphs at that point. He carried 5 mph more than me through that corner. From this, I've learned I can get off the brakes sooner, and carry more speed through the left- and right-hand hairpins. That should gain me about .5s.
Now let's scroll to the second spot where the time gap graph increases abruptly. It's the last left-hander before a sweeping right to the finish line. The purple and green speed graphs show that I braked earlier and harder than Erik. I dipped 2 mph slower than him before getting back on the gas. That cost me a half second. Apparently, I thought the corner was sharper than it was.
Correcting these two simple issues should net me about 1 second faster lap time. Luckily there's always someone faster and from them we can learn how to improve! For another look at time gap analysis, check out this post.
Thanks to Homer, Chaz, and the rest of the Jim Hall staff for a great afternoon of lapping!
Casey and the RaceTrace Team
Did you know that Formula1 inspired the color codes used in RaceTrace? F1 live timing screens use purple to indicate the best overall lap time and green to indicate a driver’s session best. RaceTrace follows suit. While the exact meaning can differ throughout the app, the color ordering is consistent. Purple is the fastest lap time, followed by green, yellow, and red. The green, yellow, red part uses the familiar traffic light analogy. Check out these screenshots and the tutorial video to see color coding in use throughout RaceTrace.
Hey, it's cold out there so we thought we'd offer up some incentive to get you out on the track -- the first ever RaceTrace Winter Sale! This sale will only run for a limited time, so take advantage now. Get your season off to a great start, and log your data so you can watch your lap times drop as the season warms up.
Today I’d like to share a very powerful feature found in data acquisition systems such as RaceTrace. Imagine you’re driving a lap against your friend who is faster. Let’s say that at some point in the lap, he’s 0.7s ahead of you. Using your friend as a reference, your “time gap” is +0.7s. Maybe your friend gains on you some more, and later in the lap the gap is +1.5s, meaning he gained 0.8s more on you. A time gap graph shows your time gap to your friend at every point on the track.
The above example is depicted in the screenshot. The graph shows the straight section between turns 5 and 6 at Laguna Seca (highlighted in blue on the track map). Two laps are shown, a purple lap (your friend) and a green lap (you). The green shaded area represents the time gap of the green lap to the purple lap. Near the left side of the graph, the gap is 0.7s. (The time gap axis is on the right.) At the right edge of the graph, the shaded area measures 1.5s. This means the purple lap gained an additional 0.8s on the green lap over the straight. Now supposing your friend was only about 1 second faster than you on this lap, you just discovered where 80% of his lead is coming from. Using this technique you can quickly pinpoint areas for improvement. It has helped me dramatically reduce my lap times, and I hope helps you too.
The RaceTrace v1.2 update has been approved by Apple and is now available in the App Store. This version includes: