I was shocked how much difference the /55 vs /50 tire made in the accuracy of my 2011 Ninja's speedo/odo accuracy. Load is what the load is given the rider and other cargo. The further you sink into MPG nerdity, the sooner it will become clear that you need to know how accurate your odometer is. It flaunts a 1.8” that’s crisp and easy to read even during low light conditions. INERTIAL MEASUREMENT UNITS: Dewesoft also offers very rugged IMU units which in addition to GPS receivers have roll/pitch/heading channels with dead reckoning and offer an IP67 degree of protection. Tire size is always changing - they are getting smaller as they wear. There is often a difference between the odometer reading on the dash board and the odometer reading on the truck ECM or Electonic Onboard Computer. How accurate is the "miles to empty meter" ? The odometer is probably more trustworthy as long as you haven't changed tire size or anything. Page 1 of 3 1 2 3 Next > Mudcat, Jun 25, 2009 #1. Without one, the unit is making a ‘“best guess.” The more information required — like weight and fitness levels — the more accurate the result. For best results, use outdoors. Vehicle odometer shows about the same difference between in distance travelled as trip meter; I connected a bluetooth OBDII unit to the vehicle's port and paired it with the app running on the vehicle head unit. My Xices were, 2-3 mph off so I wanted Tesla to adjust for it which they do but only if you pay them $2k for wheels and tires vs. $200. Some makes and models of car can be 10% or more- and that's before wear and tear or aftermarket tires. Hummingbird Electronics’ GPS Trailer Odometer is a device that is permanently mounted to a trailer, namely a camper trailer or caravan with the sole purpose of recording the distance travelled. I did, 1 mph off for me. Mileage vs Mileage GPS or odometer? Another thing to remember that Tire Pressure is recommended at two weight ranges. GPS Odometer only does one thing, and does it well: measure distance traveled. Surprisingly, there is no federal law that regulates odometer accuracy. However, the high accuracy of the bematists's measurements rather indicates the use … Using Google Earth to verify your odometer accuracy Posted Wednesday, April 5/06 in General. Tideland Prius Jan 9, 2011. However, rain can degrade accuracy by 0.3-3.1%, with the better watches being impacted the least. GPS INTERFACES: Dewesoft offers various robust navigational GPS receivers for precise location tracking, acceleration, and speed measurement. Big Steve, Mar 14, 2013, in forum: Gen 3 Prius Fuel Economy. I tend to think the GPS is not 100% accurate because you can't guarantee 100% of the time it will have a good signal, or accurate fix. I haven’t seen an accurate speedometer on a car yet. As I accelerate from 0 to 70 mph, the value of the difference goes … One of the parameters the app shows is the speed difference between ECU and GPS, updating it in real time. There is often a disparity between a car's speedometer and the GPS or navigation device. Now if you download the RAW data in the GPS and evaluate it by other means then you can come up with very accurate distances as is done in several fields of science every day. Both authors list the distances of routes traveled by Alexander the Great (r. 336-323 BC) as by his bematists Diognetus and Baeton. I used to get near 100% agreement between CardioTrainer and both my bike's odometer … And that could result in a few extra or fewer miles. When GPS was approved for civilian use there was an intentional degradation of the signal, Selective Availability (SA), limiting position accuracy to around ~150 - 200 ft. SA was turned off in May 2000 and accuracy improved to ~50 ft. It's typical for a car to leave the factory with an odometer that's 5% off. Police radar and GPS both agree, I'll go with that, thanks. I did adjust settings to update GPS position every second instead of default 2 seconds to make sure app keeps up with vehicle speed. Digital Odometers are incorporated into some Raveon GPS transponders such as the M7-GX. I was checking odometer accuracy today using GPS enabled app on my phone and I got slightly concerned: Giulia showing me 5.2 miles for the trip while "GPS distance and location tracker" app shows 5.0 miles. > @hgmichna said: If you had bothered to actually check, you would know that the Tesla speedometer is accurate." From '14 on the … But if you are moving at 30mph, you are covering more than 13 metres per second, which makes it possible for a satnav to measure your speed accurately. s1njin, Jan 3, 2011, in forum: Gen 3 Prius Fuel Economy. Maybe your fuel economy is … This is where another sensor comes into play: the barometric altimeter. Total trip distance, current speed, average speed, altitude and top speed . The bike computer will simply work using the GPS, GLONASS and anything else it has. Accuracy is a big difference between the bike computer and the smartphone. I think GPS adds up your distance travelled incrementally, like an odometer, but is also subject to little variations, since it only knows your position approximately. My concern is that at slow speeds the odometer reading on the screen of the GPS is inaccurate as explained in the blog. The second cache I completed was on flat terrain on a wide rails to trails path. Discussion in 'GS Boxers' started by Mudcat, Jun 25, 2009. Features: - Accurate to within 1 … GPS Accuracy is slightly better with clear skies than with cloud cover. A GPS transponder with GPS uses its GPS location to calculate distance . Odometer accuracy vs GPS. Does anyone know if this will give me an accurate distance reading? The effect of this is that many drivers will find that at 100km/h they are driving up to 14km/h below the speed limit if they rely on the vehicle’s speedo. Includes run in background capability. This is very accurate GPS speedometer and GPS odometer App, this app have many features like measure current speed, total distance, average speed, total time spent on journey, top speed of your journey and many more with bike speed meter, km/h meter TOP FEATURES 1. Ideal for almost anything that requires measuring outdoor distance traveled such as walking, running, driving, boating, hiking, horseback riding. GPS is more accurate, speedos are set 5% to 10% high since manufacturers would get sued if they said people were doing the limit when they are in fact speeding. 61-62) and the ancient Greek Strabo (11.8.9). With the GPS and altimeter, you can be sure of how much, and how fast you’ve gone, all from the compact display. For an accurate GPS reading, your car must be on a flat, straight road. Relative speed over distance is used in order to calculate energy expended. How accurate is a GPS… When this happens, the GPS has to guess to fill in the gaps. I ended up with a speedo healer to correct it. If you have an ANT+ heart rate monitor paired with your odometer, this calorie count can be quite accurate. Re: GPS vs pedometer: Boondoggle: 6/19/11 4:03 PM: Actually, it appears to me that two updates ago GPS accuracy went totally down the drain. Ran a one way straight distance betweeen two points measured by my phone at 4.7 miles (in 65 minutes which seemed odd considering I am reasonably fast) I later measured the same distance as 7.3 miles on my car's odometer. I just notice that the mileage on my GPS is 10% higher then what my odometer says I rode. Note that GPS does not work well under a roof. They work very well, but you will see a difference in reading between the digital odometer reported by a GPS transponder and the odometer on the dashboard. Jump to Latest Follow 1 - 3 of 3 Posts ... vs GPS my 2014 speedo is consistantly 2 mph low with new /55 PR5 tires. GPS Speedometer and Odometer (Pro) (9 Similar Apps & 2,287 Reviews) vs DigiHUD Pro Speedometer (9 Similar Apps & 3,135 Reviews). I suspect though that if every single fix has been a clean accurate fix then it probably comes up with data that is many more times more accurate than the odometer is even capable of doing. 5 years ago. Does it match the odometer or does it still show the discrepancy? Which is more accurate? Yeah, in a straight line, like driving down the freeway, your GPS is more accurate than even your car's speedo and odo. I would guess that the diff you see between the odometer and Google maps is typical but there is no good way to judge which is more accurate … Why is it important? Joined: Jul 22, 2004 Oddometer: 4,472 Location: Bay Area. While both have GPS for positioning, a lot of the apps that work on a phone will analyze the data after it's uploaded to work out positioning and timing. It will be somewhere in the range. Replies: 20 Views: 2,236. But even it is going to be off a … Possibly the first evidence for the use of an odometer can be found in the works of the ancient Roman Pliny (NH 6. Could this be accurate? Ever notice the odometer reading in your vehicle differs from the distance calculated by an online mapping provider? Incorporating customisable service intervals allows the user or service agent to set a specified date for a reminder and/or set a distance travelled with adjustments between values … The difference between completely clear and fully overcast is generally less than 0.1% and my testing includes a similar mix of cloud cover for each watch, so I ignore this difference. Pedometer Vs Odometer Accuracy? F8L Mar 21, 2013. It goes up to 3-3.5 mph when the tires are worn. Odometer accuracy is no longer defined. km speed test 2. I don't see it ever happening (not even sure what the design standards have to say, they might also dictate a mechanical speed reading … So even … What this means: For a vehicle travelling at a true speed of 100km/h, the speedo must read between 100km/h and 114km/h. I would have to say the GPS is the most accurate, but it’s not perfect. The answer is simple: although vehicle odometer readings are close to the actual mileage traveled, they are not precise. Your GPS records position (to plus/minus 10m or so, depending upon the quality of your GPS) and the current time (to an incredible accuracy), and stores it like … ~J. Is so what does the software show when you make the trip in the car? The odometer, (and speedometer when you're at a steady speed) of your gps is much more accurate than the odometers in most cars. The Garmin Edge is a compact and easy to use GPS computer that comes with a rugged design, made for the trails. I will be off a little bit as the tire rubber wears and in the tire pressure is not to specification. Odometer Accuracy. The reason for the "shortening" on a twisty mtb ride is that the GPS "draws" straight lines from each "one second sampling point", rather than that curve you actually rode. This is on a 05. sammyj0r, Jul 31, 2010, in forum: Gen 3 Prius Fuel … As far as I know, you are correct in the level of accuracy for civilian GPS units (like satnavs) being lower than military applications. Speedo is effected by tyre wear and pressure, plus the mechanical/electronic accuracy. https://www.mapon.com/en/blog/2020/05/difference-in-odometer-and-gps-data This has to do with the fact that the ECM reading is pulled from the GPS pings and the dashboard reading comes from calculating how many rotation a truck's tires do within 1 mile. It has good accuracy at any speed, and on days when I have good satellite coverage produces a very even track log with few errant track points. It's important simply because an inaccurate odometer will throw off your mileage calculations. Now, the speedometers match very … How much of a difference and how much is … If the odometer is perfectly accurate with a new set of OEM tires, properly inflated. Every second […] As soon as there are curves, there's a lag, and as soon as there are undulations, there are inherent inaccuracies in the reading as a result - it's all maths. Mudcat Unregistered. When I finished this one, the Trip Odometer showed 1.45 miles, while the Track Log showed 1.28 miles. And if it is updating that measurement dozens of times each second, it should be accurate – … Because it does not … I have the Track Log setup to record by Distance, at an interval of .01 miles. This is of concern to hikers trying to get an accurate distance for a trail. I'm glad you asked! 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