Setting up your Speed Sensor for your Garmin Accurately
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- The Garmin's GPS is good, but not perfect. If you have been seeing your speed average and distance always lower than your friends, it might be because they are using a speed sensor. Where the GPS works of sending signals back and forth , decreasing distance inaccurately, the speed sensor works of rotations from your wheel. Every rotation sends the wheel circumference into your Garmin. That added up gives you distance which then translates into accurate data for your rides! All you have to do is go into your Garmin's settings and change the speed sensors automatic to manual. Then enter the inches to millimeters conversion and boom! You are done. Hope this was helpful.
Great point about putting pressure on the tire, never would have thought about that
Thank you. Yes it's a good tactic
Great video and thanks for the heads up about GPS sometimes inaccurately reporting distances. I used your method to get a ballpark for my tire circumfrance. Then I went to the road and used a 4 miles section that is clearly marked accurately (I verfied with my car). I tested the Garmin and found my circumfrance was a bit low when I showed only 3.92 miles traveled. So I upped the circumfrance setting in the Garmin a couple of mm and now I'm spot on. I love the accuracy of the speed sensor with Garmin set to manual! Thanks!
Thank you. Glad it helped.
This is a fab video thanks everyone is telling me gps is always accurate but I wasn’t sure if anyone needed to you can go on to Garmin’s site and look for calibrating speed sensor and it gives you wheel circumference chart with sizes
Best to do it with your weight on wheel but if can’t the chart will help
Thanks for pointing out the chart!
Glad it helped
Sorry man, you made some mistakes here:
1. The GPS unit (or smartphone) is a receiver, it doesn't send signals. The timing you refer here is between 2 different GPS samples, which you can control in certain units changing smart (4 to 6 seconds) to 1 second (settings>system>Data Recording > Recording Interval). This increases the number of samples, and if you have a good GPS signal, the trace will be more accurate, at the cost of memory (not an issue these days) and battery. Some hiking units have ultratrac mode which lets you select longer intervals to save battery if you're out for more than 10 hours
2. Only to clarify that each static GPS point has inherent GPS (in)accuracy: It puts you within some meters of your real location), which you can improve using more constellations (GPS+Glonass or GPS+Galileo) or using WAAS. However rain, trees, mountains, buildings, power lines can affect the accuracy.
3. You are measuring only one wheel rotation, barely loading it with your strength, in a way it can slip, your marker is 1/4 inch thick and you pretend to be vertical above it. Easy to err by 20mm, when the resolution is 1mm
Better to measure 10 rotations (in front your home), 3 times, there you come down to less than 1mm. (there, your error will be determined by the resolution).
4. The calibration is valid for a given tire pressure and temperature, so you better record them.
5. Finally, in MTB your tire will bounce from stone to the next, so it will record longer, or slide while breaking/drifting, recording less.
if the receiver does NOT have a clear signal from the satellites (tree cover is one example) then the readings will be inaccurate. Also a variety of GPS's have different sensitivity for reading satellite signals.
@@jiw71 huh? That's exactly what I wrote in #2
@@jaimegu sorry replied to the wrong person :)
yeah I run a speed sensor too off road ... not so much on road but I hate road riding anyway.. man that is a great way to do it I am to lazy to do that
Great Ben did not know this thxs.
Of course sir. You are very welcome
Why do you have to remove the wheel, can't you just roll the wheel with your bike?
You could but its easier for me to take it off and push weight on the tire than to do it with the wheek on bike. Also, no room in my room lo.
Hi Im using a Garmin Instinct Watch. I’m also curious as to what settings people are running that get the most accuracy. I mostly mountain bike
Auto pause-on/off
3D speed-on/off
3D distance-on/off
GPS only
GPS+Glonass
GPS+Galileo
I talk about accuracy in the video. Speed sensor, manual circumference entry, and that's about it.
hi what seems to be the problem of my garmin edge 830, im using speed sensor and while riding my speed suddenly drops to zero, after a second it goes back to the speed again, and my activity goes auto pause while riding
I have no idea, bro. That has never happened to my Garmin 520. Search Google.
can you use the ETRTO? i have a maxxis 29x2.4 and the ETRTO number is 61-622 which is 2315mm in the garmin connect app
I don't think so. They just go off of millimeters.
Why the 2311? What to input if my tire size is 700x25?
You need to measure it and convert the inches to millimeters. The 2211 is my number and yours wouldn't be the same.
I know it's a bit late, but just in case anyone else is wondering. The 700 is the diameter of the tyre, and the circumference is D x Pi, so 700 x 3.142, that is 2,199.4 mm, but this would be a very rough guide, so much better to go down the more accurate route and measure the outside diameter of the tyre, inflated on the wheel at riding pressure, with a tape. I always knew that the formula, Pi x D = C, would come in useful some time, ;)
Hi there, while riding, sometimes my speed indicator turns zero. I checked the speed sensor battery and its still got some juice there. What could be the problem?
Bad wireless connection. Maybe if it's on the rear tire put it on the front so that it's closer to your watch and or cycling computer.
Thx
No problem. Have a great day.
Don’t find this setting on garmin 520plus
The settings to change to manual?
XC Ben I think that garmin 520 plus doesn’t have to optioned to add those settings. I checked on speed sensor details and is nothing inside. But thanks anyway. You are doing great job. See you around. By the way, you have a new drop fear to conquer on markham. Lol.
@@iosmay_BlackSheep_ZR2 I use the Garmin 520 Plus and there is this option. Go check in the sensors menu.
Drew Bkk I’ll check thanks
@@iosmay_BlackSheep_ZR2 In case you haven't found out: the speed sensor needs to be connected to change settings
what about a road bike wheel?
That should work then same. As long as you measure it correctly.
Hello , sorry but this is not accurate . When you drive a bike tyre is presed by your weight which mean it have different diameter . When you measure by your method tyre is not pressed at all which means it have different diameter. When you want realy accurate measurement you have sit on bike like normal and rive along side tape measure. BTW sorry for my english.
In the video I explain to press down on the tyre. maybe you didn't hear it? Why would you be watching a video on how to do this if you already know anyways?
@@XCBen Today I ordered speed sensor and i was looking for more information about it. I think i miss the part in video when you said that is important apply preasure on wheel . Sorry.
@@XCBen What a dick response lol.
@@realryanward out of the hundreds and hundreds of responses I have made there are a few, very few, dick ones. I agree with you.
@@XCBen You live and you learn. We all have butt hurt days :P
It's still not accurate... Measured / compared it with the catseye speedometer...
That's odd. Seems you missed something Dexter.