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Performance, Tuning, and (LEGAL) RacingPost discussions about increasing performance, capabilities, and racing.
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Anyone heard of or own a Dragy gps performance meter? When I had my Mustang I had always wanted to get a Vbox sport but could never justify the cost, and just never pulled the trigger on a Harry’s Lap Timer setup.
While on Amazon the other day I found Dragy, and couldn’t help myself so I bought one. Think of it like Harry’s Lap Timer but with a focus on drag racing, and instead of having to piece together your own gps setup, Dragy comes with its own 10Hz gps device.
The Dragy app lets fellow users compete on the leaderboard, and from everything I’ve scene the device is very accurate with regards to acceleration times. Several videos of people running Dragy on a drag strip shows that it’s accurate to the 10th of a second and less than 1mph.
I haven’t opened mine yet, but when I get off work tonight I might go out onto the toll roads in Mexico and test it out.
LOL. I'm in Austin, its not too bad here in the wee morning hours. The crappy part is the closest drag strip is a full hour from me and only has open test n tunes on Fridays, and I never had a Friday off. I traded half my shift tonight for the sole purpose of testing this thing out, so I'll report back.
Everyone here should get a Dragy lol, then we can all battle it out through the interwebs.
I have a VBox Sport & does the job very well. The Draggy looks pretty good and it sells for less than I paid for the VBox Sport. I searched high and low for a cheaper alternative, glad there finally is something.
Ok, so despite heavy rain and wet roads I tried this thing out. It works, and appears to work well. The app is intuitive and fast to start, and does just what you want it to. To go along with acceleration times you get a full breakdown of stats about the run including incline/decline, gforce, etc. It could not be any simpler.
There are are some negatives however, the most serious of which is the LASER beam of a blue led that flashes continiously when the device is connected to your phone. If you place the receiver on the dash prepare to be blinded every other second, and expect cars to pull over thinking you are the police. A piece of electrical tape solves the issue, and the led has no purpose at all other then to tell you it’s turned on. Which brings me to my next issue.
The gps device has no power switch, and relies on an active Bluetooth connection to signal the on and off. I’m old school, and a dedicated switch would be nice.
The app does not have a landscape mode, and does not rotate with your phone, which was annoying with my dash mount.
The timers start when you roll out and there is no feature to enable a timing tree to simulate a real drag race, which would make the app more emmersive and allow it to measure reaction times.
Otherwise the Dragy is cool as hell. If they integrate a lap timer feature for road racing (which they say is in the works), then this will be a real killer of a deal at $150.
I’m waiting for the first court case where someone’s dragy profile is used against them as evidence lol.
I never did post an update to this, but for anyone on the fence about this device, it is very much worth it for the cost. Everywhere I’ve looked, people are reporting excellent accuracy compared to actual time slips, and the cool thing about the app and device is it gives you a full breakdown of the runs, making performance comparisons between your individual runs very easy.
The only con for me is battery life and the blue led. I’ve taped over the led, but if this sits in the car not being used, it’ll drain it’s battery within a week. I wish they had added a hardware power switch to completely turn it off, as it’s always listening for a Bluetooth connection in its current configuration, which I’m sure drains the battery.
As for the runs themselves, anytime the car comes to a stop or hits a trigger speed, it starts recording. You can manually restart the runs by hitting reset, but otherwise coming to a stop or slowing down below trigger speed (below 60mph for 60 to 100 run for example) will automatically reset it for another run requiring no input from the driver.
Here are what the finished runs look like, this was from tonight coming back from town. The dragy does not care where you are or what type of surface you are on, but it does require a total slope over the course of the run to be less than 1% in either direction, up or down.
Yall should go out and buy one of these so there is more trucks on the app!
Dragy performance meter
