How To Install A Bicycle Computer
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- เผยแพร่เมื่อ 26 ส.ค. 2024
- A wired cycle odometer can measure distance and speed for relatively low cost. Here's how to install one.
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These computers work by using a magnet, attached to the spokes, which passes a sensor, usually attached to the front fork leg. Usually the most tricky part is getting the two components close enough together to register a speed on the head unit. Dan's got some handy tips on where to place your sensor and magnet for optimum accuracy, as well as a neat way of routing the cable up towards the bars.
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This is one of the best informational videos on TH-cam, super to the point and very well explained. To think this is five years old is insane. Thanks for the video :)
Having the sensor high up on the fork will reduce inaccuracies, not having it on the bottom. The magnet will be moving faster when further out from the centre (for the same angular velocity of the wheel) and so will pass the sensor in a quicker time thus removing the ambiguity associated with the sensor predicting/detecting the magnet position that accompany it passing through a bigger time-window at any given speed, as you have with the sensor low on the fork.
That's interesting. You'd think that a well-designed sensor would accurate detect magnet passes at any speed, and your theory of minimizing the time the magnet is in the sensor zone would give you more accurate clicks per unit time - makes sense.
I would guess though that in displaying tenths of a MPH it probably wouldn't make any difference where you mounted it.
Your observation is in accordance with Trek DuoTrap sensor location on Trek bikes, .e.g. FX 1 :
www.trekbikes.com/us/en_US/bikes/hybrid-bikes/fitness-bikes/fx/fx-1/p/1320010-2018/?colorCode=black
I see, for stationary training Im putting it on the back wheel. Thanks for this.
You stated that you would recommend installing the sensor on the front wheel near the hub as the wheel is moving slower there in order to get a more accurate reading. Actually, the slower wheel speed results in a smaller gradient in the change in magnetic flux as the magnet goes by the sensor resulting in a less crisp signal to the sensor, which can actually create a small amount of jitter in wheel speed reading even at constant speed. I would suggest placing the sensor closer to the rim to improve the signal strength and detection. Like you video's by the way.
I love TH-cam comments.
Indeed, by Faraday's law
Proof? Coz im gonna start placing my magnet speed sensor now
1:10 makes no difference where on the spoke you put the magnet. The top, middle, and bottom of the spoke are all simultaneously parallel to the fork with every revolution.
If you want it to be more accurate, then put your full weight on the bike when measuring the circumference. If you are not on your bike, the circumstance will be greater than when actually riding it. The wheel will depress giving it a smaller radius.
it's recommended to substract 4mm. But I guess it depends on tire pression too.
I am just about to install a very similar type cycle computer on to my bike and this video has been a great help in giving me some very useful directions thank you.
Awesome toutorial. To the point and practical. Thank you!
Finally I can fix my bike computer on my road racer, much love from Ghana an amateur cyclist.
First off let me begin by saying that I love GCN! Alright, I'll cut right to the chase, I would like to see a video on how to install a computer along with a cadence sensor. I could never get my cadence sensor to work.
+sekonic1973 good suggestion - we'll add it to our ideas list/
And also you should do a video on riding safely in windy conditions?
+evanthetriathleteman +1
Excellent videos, my computer was 💩, now I just ride and ride.
I find body weight and air pressure changes wheel circumference markedly, and I usually end up adjusting the final circumference over a known 1 mile course. But I suppose one could sit on the bike and slowly roll forward one rotation to get an initial circumference.
Thank you for making this video! Without your help with the magnet,I would be stuck
Finally, I found a ZIPP product i can afford.
+vaxbuster I dunno about the joke, but he was referring yto the zip ties
+vaxbuster Sure about that ? They should made some, carbon ties would brings this extra stiffness and light weight as well ;)
i am actually saddened by the ppl who didn't get this was a joke
+Simon Rano Hahaha!
+Simon Rano Hahaha!
Hello I want to say thank you for your demonstration of how to attach the CatEye Velo 7 Bike Computer. I watched your video two times and I am catching on how to do it. I'm so glad I can watch a video and maybe read the instructions - lol - thank you again and I have two bicycles - I will be using both as stationary bicycles - one in my living room and then I'm going to use the other one next to my desk at work for when I take breaks. Peace
Use flush side cutters to avoid leaving little sharp edges on the zip ties.
Good to know magnet can be mounted closer to the hub , thankyou for making the video!
1:10 makes no difference where on the spoke you put the magnet. The top, middle, and bottom of the spoke are all simultaneously parallel to the fork with every revolution.
Tactical comment to promote good and helpful videos. Thank you very much!
@Global Cycling Network or any other expert, I know this is a 2 years old video, but can you please tell me the brand name and model of the stem you have mounted on the Canyon bike in this video?
Technical Query - Cycling Computer - Speed Sensor Working Principle
Dear GCN,
I am a cyclist and learn basic mathematical formula for working out the a bike speed from a rotation sensor.
Speed = RPM * 60 * Pi * Diameter of Wheel (m)
= 60 (RPM say) x 60 x 3.1416 x 0.7m
= 3600 RPHr x 3.1416 x 0.7m
= 7916m / hr
= 7.9 km / hr
Cheap cycling computer usually without GPS chip built inside, so it cannot derive speed by using satellite data.
However, modern cycling computer never request cyclist inputting the diameter data of a wheel of his bike.
How can a cycling computer derive a bike speed based on RPM sensor only???
Thank you
2020-10-12
Video was a great help. Clear and precise. Thumbs up.
Brilliant. Where is gone this dude?
Glad mine is wireless :)
Wireless doesn't work all the time with flashlights in the front..
@@deivytrajan what do you mean
wireless sucks you knks
@@mocanulaurentiu5812 Bright lights can interfere with the wireless connection and cause inaccurate reading. Ik, kinda weird but it's true.
@@georgeyaknowthegeorgeyeathatme thank
I usually sit on the bike before measuring the curcumference. Or subtract ~20mm from the no seated measurement. I believe it is more precise this way.
Yes. Exactly.
Gonna buy my cateye velo 9 speedometer soon for my roadbike, and this video helps me a lot. I hope I won't encounter any complications when I'm going to set up the circumference and suchs 😅 well placing the speedometer, wrapping around it's cable, I think its easy.
Anyone else watch this thinking "please don't put zip ties on that Canyon" ;)
+Ben Standen Absolutely
Me
Then spend more for the wireless I think😅
Thanks Dan. Excellent tutorial, certainly better than the instructions that came with the device!
And most acurest mesure you get when you have right tire presure and you sit on bike and roll that one round.
@ 7:35 Cat Eye PDF manual says to sit on the bike while you roll it out: "For the most accurate measurement, do a wheel roll out ... with tires under proper pressure .... and with rider's weight on bike, roll exactly one wheel revolution in a straight line."
Very useful thing to have. Shaving everything,
stay away from wireless computers - I rode past a welding shop and the stupid thing said my max speed was over 500km/h
you are really fast😅
😂
I think most people with carbon bikes with SRAM RED or Dura-ace (some shots) won't use a basic bike computer
They can get their butler to fit a better one
+compfreak Sram Red and DA are for the average rich, you want some Storck Powerarms G3 to add to your groupset to really show people you mean business.......plus we all know they will make you faster!!!
Super thorough explanation
Very helpful! you look like Hugh Jackman :)
But I'm guessing the speedometer isn't very accurate since you may know the wheel circumference but it's going to affect the readings depending where on the spokes the magnet is the sensor is picking up on the flyby.
So it's just an average? Or am I misunderstanding something.
Bro thank you, you saved me from having to deal with that circumference chart! 😳
I was wondering if this is waterproof, the sensor and the computer? Because i some times ride in rain and generally my bike gets wet alot from water on the road and other reasons.
A clear and concise instruction video.
Thanks for the mounting instructions; do you have a video showing how to program it too ?
Same computer I put on my wife's bike. She likes simple and it certainly is. Some great tips too.
whats it called
@@jackcoughlan737 Cateye Velo 9
long time ago i bought my very first bike Computer, but unfortunately few months ago i lost it somewhere , probably i dropped it along the road without noticing it happened…. now a few weeks ago i bought my second one, and now i will really make sure that it will last longer because it just make my bicycle ride more fun!
Thanks for explaining so clearly. I have the same computer. Cateye instructions showed the computer is mounted on the stem - is there an advantage mounting it on the stem versus the handlebar? Thank you.
Can I use a cateye fork sensor on a magnet that has a different brand?(lost the magnetic part located on the spoke in a crash)
Just what I needed
May be, rear triangle and wheel are more safety places for installation of sensor and magnet
Extremely useful video my bike computer works a treat now!!! Many thanks.
Thank you! This is so helpful
Great video. Thanks for very informative instructions
A better way than sticking tapes on the floor is to put a bit of toothpaste on the floor, roll the bike over, then measure the distance between the 2 toothpaste marks.
I really appreciate this video so much. The instructions that came with my Bell bicycle computer where the worst they didn't explain a damn thing.
Same thing on my dashboard 150
Jack Zegas I had the same problem
Nice video Dan, since you're with cateye cycle computers, can you make a video about installing the wireless model? i cant seem to lock in place my rear cadence/speed sensor ever since I bought it for my other bike (around 2yrs ago), I've changed my bike but it still gets loose and nocked off the place...I can send a video explaining if you guys prefer
Thanks
Magic you made something complicated easy thank you X
Thank you! Just installed my Velo 9 using this video.
Thanks for the super helpful tutorial!
I followed your recommendation to mount the sensor near the bottom of the fork. Unfortunately that left insufficient cable remaining to mount my velo 7 to the handlebar. So I had to remove and place the sensor near the center of the fork. After that, installation was easy.
1:10 makes no difference where on the spoke you put the magnet. The top, middle, and bottom of the spoke are all simultaneously parallel to the fork with every revolution.
Thank you bro it working good 😊
Thanks! Very helpful!
When rapping the cable around the brake cable they sale a cable rapping at auto parts stores used to keep car cables together that will give your bike a more clean look
Thanks for the help!
sir do you have a video how ro reset clock with this tipe of model?
I think you just take the battery out.
Edit: Woops this is 3 years old... Oh well, hope I helped somebody.
To be more accurate, would we not want to be seated on the bike with normal air pressure in the tires when we measure the circumference? Given the error is multiplied by about 750 revolutions per mile, even a small error will give inaccurate readings.
+Timothy Fish doesn't matter if you are seated or not or if the bike has weight or not. the circumference of the tyre will not change.Think of it similar to tracks on a tank.
Even if you are new to the sport I would definitely recommend getting a GPS (doesn't even have to be a Garmin!) Although more expensive it is definitely worth it!
Why is that?give is a clue i only heard about lost data lost signal especially garmin 😜
Great job. It helped me connect my computer.
Should you have your weight on the bike when measuring the wheel circumference?
????????? that wont change anything
Bike computers are becoming so popular now, I wonder when we'll see manufacturers incorporating channels into the bike frame to take the cords?
+faster4real ah, I see. My previous bike and the new one that's coming have the computer already installed so I thankfully don't have the headache of figuring it out myself. 😊
+Bungle2010 I've only been riding two years so I had no idea about what went before. 😊
I have had a simple bike computer for years. Can't do without one now! I don't like the wireless models, to many problems. I put a new lithium battery in each season to prevent data loss from a dead battery. They reset when you change the battery so you need to enter the wheel size input factor when you change it. . Some models let you program the odometer to what ever you wish after you change the battery.
Great information! Thanks!
Can you put the sensor on the back wheel if you've got a wireless? For bike trainer purposes?
Ty so much I was so lost on the pic on the bottom
very useful! many thanks
Hey +Global Cycling Network, I just wanted to ask why placing the sensor and the magnet at the lower part of the fork a good idea? I placed my sensor and magnet 1-2 inches below the braking part of the rims.
The upper part of the fork is usually too far from the spokes to meet the
I have a 3 spoke magnesium wheel......what to do?!
garmin edge 😄
If your rear wheel is "regular", use that
Midas Sandahl this is true however the computer had to still be in range if it is wireless
L3G1T I mean, if you have a wireless computer that can’t reach from end to end of your bike, there are bigger problems.
Phone App
Is there such a thing as an intuitive/easy/simple... bike speedometer? I have had a wired 'Enkeeo' one from Walmart 2 yrs ago and when it needs reset, it takes forever to figure out, even looking at youtube . I can work a PC. and my smartphone, but I just don't get the 2 bottom buttons on this wired Enkeeo!! I grew up with the old fashion round speedometer that only kept track of speed & miles traveled. Now seems like you need a degree in Computer SOFTWARE DEVELOPMENT to set up, change or whatever on these mini computers for bicycles. Thanks
it's funny how everybody in the comments say they have the same bicycle computer but none of them have the same bike :))
Hi, is there any tips as to how to remove the magnet from the spoke if I am changing bikes?
How to know my speedometer speed accuracy?
OMG that is my cyclocomputer :D
How do you set the km driven back on computer when you change the battery? Also I had to mount mine on the upper fork as you can’t have the computer more then 27 inches away actually about 22 on mine before it would work
Hello...
I purchased the Pedrone computer for my Bad Boy 1... With the thick round front fork that is making it difficult to mount the speed sensor.. SUGGESTIONS? Thank you
I just bought a bycicle computer and i had no idea how to mont in thx so much!
Nice!! Never knew about that way of entering the numbers for your tire size. Going to do this today.
I have a basic Bontrager Trip 100 wireless and have been having problems with it. I have a Trek Crossrip and it has the integrated frame mount. I am not sure but I think this is interfering with the wireless connection. For the first month it worked grate, but now It has been working sporadically (sometime it would work for the whole ride, half or not at all. After Getting a new set of batteries from my dealer it still does this, I am guessing my only other option would be to see if they will swap it for a new computer.( even those this is barely 3 months old?) The funny thing is we tested it out of the frame mount closer to the magnet(only by a few inches) and it worked, plus my buddies version(higher grade) worked fine in and out of my mount. Then we tested mine in his integrated frame mount and it work fine!!... is this a normal phenomenon or am i the only one with this problem?
dude i had trouble installing it but now i install it without problem
Is there any reason this wouldn't work on a motorcycle as long as the distance from the magnet wasn't too large? I have a 82 Honda XL250R information is sparse. Would be nice to have all the other functions some offer like clock, temp, (compass?) ect. total drive time, and extra odometer speedometer
Is there any way to recover the miles done after changing battery?
you can also use 2*pi*r to find the circumference.
Dope background music.
How far from center of wheel is the best for magnet to be?
That is the big question. Because how he was say than you drive maybe with 10km/h and shows you more. What it the perfect place for the sensor?
I put it in the middle to lower and it read good i forgot how and where im goig to put it back
Which circumference for 28'' wheel in perimeter settings to choose?
How do you enter the circumference of the wheel into the computer?
Quality and some go
Hi. I bought a bike with Cateye Velo 8. It is working but I couldn’t understand how to set the computer install. How can you help me please?
Should I buy one of these or should I stick with strava?
what model bike computer suitable for new 5 spoke MTB Carbon Wheel Set 27.5?
What is better cable or wireless
Can it still be fixed if the speedometer cable is broken?
Please don't use side-cutters to trim zip ties. I can send you some nice photos of scars caused by the sharp ends if you like ? Always use a sharp blade like a Stanley or craft knife to cut it off flush.
Nice job 👍🏻
Hey Dan, could you do a video on the best way to save watts?
hudlum x
brand and model of the computer?
IBM
very informative