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12-21-2009, 09:01 PM | #23 | |
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P.S. Other posters, thanks for the good info here.
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12-23-2009, 12:37 AM | #24 | |
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01-02-2010, 11:33 PM | #25 | |
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Here are some notes from Harry's site regarding GPS and accuracy. http://web.me.com/hschlangmann/LapTi..._Accuracy.html http://web.me.com/hschlangmann/LapTi...atibility.html |
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09-24-2010, 08:22 AM | #26 | |
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Also, I was just on the racelogic site, and they seem to have solid systems. Their "light" system with integrated video seems to be around ~$1600, which includes a camera, but the cheapest in-car display module is another $650, which seems very expensive for what it is. http://www.videovbox.co.uk/index.php/buy-online/prices
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09-24-2010, 09:08 AM | #27 |
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The race technology DL-1 in my SM was really easy to use, but unless you pair it with a DASH from race technology you're not going to get in-car. It has the advantage of having very accurate accelerometers while still having the ease of use. Just need a compact flash card, a GPS antenna, and a 12v source (comes with a cigarette lighter adapter) and you're good to go. Best when the box is mounted close to the center of gravity but you can put it anywhere that's level, in an M3 I'd use the trans tunnel between the rear seats and run the antenna up to the roof through the passenger door.
The simplest system that sets up in-car timing (and predictive lap time, which is a fun feature) is probably the Traqmate. Very popular amongst SM racers because of its simplicity and the predictive feature is very useful in qualifying. If I were instructing for you, I'd make you deactivate anything that gives you in-car lap times. Timing, even just for the private use of the student, can make a big, big difference in insurance premiums for the event organizer if the insurance company finds out about it. You can probably make a case for looking at the GPS and accelerometer data as a learning tool, but in-car timing is a tricky issue. It's also the wrong thing to focus on at a track day. Drive well, and the speed will happen as a natural consequence. The system in my current racecar is all STACK, which is beacon-based. Not for the faint of wallet though.
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09-24-2010, 09:22 AM | #28 | |
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09-24-2010, 09:23 AM | #29 |
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I deleted my post when I realized you were responding to the OP. Anyway, I am still somewhat suprised by jml's not so favorable traqmate review...
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09-25-2010, 03:13 AM | #31 | |
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On the traqmate (below), similar data, but out of alignment between laps (sat vs sunday). This is caused by drift, and was explained to me to be something that is "sometimes" normal by the tech support at traqmate. We tried different GPS loctions, different receivers, different main units. Same results. Pretty frustrating when you are used to the accuracy of the G2X unit, which was flawless IMO, except for the usability of the software. |
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09-25-2010, 03:23 AM | #32 | |
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http://www.smartycam.com/on-board-camera.htm http://www.videovbox.co.uk/index.php...ideo-vbox-lite I guess I should probably buy both and compare... |
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09-25-2010, 07:49 AM | #33 | |
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I wasn't aware of the smartycam system. Thanks for bringing that up. It seems well integrated, and $999 gets you video and basic GPS info in one package. I can't see an dash lap display accessory though. http://www.pegasusautoracing.com/gro...D=AIMSMARTYCAM Vbox does "seem" to build higher end systems, but they are pricy. A "lite" system with dash display will run $2250+. http://www.videovbox.co.uk/index.php/buy-online/prices
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09-25-2010, 10:51 AM | #34 | |
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Thought I still believe if the video sync worked and all the accuracy issues were gone, the traqmate software is the best. Video-gps integration in general for learning is a killer app. Racepak has video integration with chasecam now as well, but I have not tried it. |
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01-03-2011, 07:39 AM | #35 |
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Has anyone used this bluetooth receiver with an iphone app such as Harry's Laptimer? This is supposed to operate at 10Hz. I don't know about its positioning accuracy though.
http://www.qstarz.com/Products/GPS%2...T-Q818XT-F.htm http://web.me.com/hschlangmann/LapTi...page/Home.html
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01-04-2011, 04:27 AM | #36 |
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I used trackaroo's trackmaster (android OS) -- and it worked fairly well (for a $5 app).
The GPS acquisition was the biggest issue ...but someone said they bought an external BT GPS module and it improved enough to use it reliably. |
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03-04-2011, 09:45 AM | #37 |
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I narrowed my decision to two options:
1. Vbox lite from racelogic. They are currently running a special for a 10Hz GPS, 2 cameras, 2 mics turn-key kit for $2100. http://www.videovbox.co.uk/index.php...=article&id=61 2. DL1 + Video4 from race technology. Comes with 5Hz GPS, 2 cameras, 1 mics for $2199. I'd rather get something with at least 10Hz GPs, and they have an upgrade option for 20Hz GPS at $2399. This does not come with in car display. The cool thing about this is that you can get a complete dash replacement (DASH2) with it, which I want for the E30 M3. I suspect that would bump the price for the 20Hz setup to more like $3100 (I need to find out for sure), which is getting real pricy. You can get a small display instead of a full dash for less. http://www.race-technology.com/dl1_v...e_8_30607.html Both systems offer channels for acquiring data other than GPS and video data. Traqmate is coming out with a new system, but I'd rather not pay $2k to see if the issues outlined by jml above persist. Any feedback from folks who might have used these systems would be appreciated. I am especially interested in usability issues in terms of reliability and consistency. I don't want to mess with an awkward acquisition system at the track to make things work. I am fine with system complexity as long as it operates reliably once it is setup to do what you want it to do. I'd also rather not do any post processing on the video, and would like to be able to walk away with a memory stick that has everything processed for detailed analysis as well as casual viewing (I think both of the systems above do that).
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03-04-2011, 09:55 AM | #38 |
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Hey Lucid - I pulled the trigger on the Vbox lite late last year, I unfortunately have not been to the track since then. I only set it up briefly to check it out. Hopefully I will get to the track in April once it gets a little warmer around here!
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03-04-2011, 10:03 AM | #39 |
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It looks like a really nice unit, and the price is right for the bundle. If it wasn't for the dash option that goes with the DL1, I would have pulled the trigger on the vbox as well. Not sure if the dash is worth paying almost a grand more though...
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03-04-2011, 10:09 AM | #40 | |
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If I was spending your money - I would definitely get the dash as well..... |
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03-04-2011, 10:20 AM | #41 | |
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I would like to see water and oil temps, and fuel pressure for sure, and possibly AFR since the car is tuned for it closed loop (I have a gauge for that currently). The shift light feature on DASH2 is "neat," but I suspect it will offer limited utility--it's not at the right place. I played around with positioning my shift lights and the best place for it is above the dash actually. The extra grand is considerable (unless I am spending your money).
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03-04-2011, 10:30 AM | #42 | |
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It would be nice to hear some feedback from someone already running that set up. Shift lights above the dash would probably be better for me as well as I find a pretty much never look down at the cluster when at the track. (I dont have shift lights anyways since my car is 6MT) I am looking forward to the video and logging capablities for this year, its going to be a great track season! GL with your decision - let us know what you decide. I know it's pricey, but adding the dash2 in your case does look like a pretty good option to me. Oh and if you need someone to test it, just send your car up to me..... |
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03-04-2011, 10:50 AM | #43 | |
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I use this for a shift light: http://store.gospecracing.com/shift-...ghtsystem.aspx It works really well. Fully programmable. You can set the interveral and hence the sensitivity of the light progression. Send me $30k, and I'll deliver the E30 M3 to your door.
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03-04-2011, 12:41 PM | #44 | |
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Thats a nice shift lite set up. I said test, not buy.... I would love to pick up an E30 - I need to find a house with a much bigger garage though, I think I already have about 4 cars on the wishlist to fill it, not to mention the daily drivers |
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