Wiggle

Looking for a bike computer to mount on my Trek 520 for commuting and touring use.

1. Prefer something with good battery life and a non-integrated battery. Typical CR2032 would be good.
2. Wireless sensor - only need speed/distance but if cadence is available that's nice too. Again long battery and CR2032 if possible.
3. Don't care about heart-rate or anything more fitness oriented.
4. Don't care about slope/grade.
5. No GPS navigation required. I'll use a smart phone for that.
6. Would like to see three items at once, ie speed, distance and clock.
7. My stem is Blendr compatible and if I could use that feature it would be nice.
8. Would like some degree of light control. I plan to buy ANT enabled front and rear lights. "Daytime running lights" function at minimum, access to other modes or battery indication is nice but not required.
9. Hoping to spend $200 CAD or less (with speed sensor) but if that's a ridiculous proposition please tell me.
10. Backlight for use in low-light conditions (switchable so it doesn't burn extra battery during day ideally).

Thank you

Elvo

https://smile.amazon.com/dp/B07C1TDB...5&ref=aa_scomp

Vintage Schwinn

IF YOU ONLY NEED: Wireless SPEEDOMETER, with clock at top left, and ODOMETER at top right............SPEEDOMETER large enough in the Center...... then below that you have stopwatch and trip odometer.............................yeah its a dumb speedo with no downloadable stuff BUT THE SPEEDO display is GREAT and LARGE ENOUGH TO SEE...........THE ODOMETER at Top Right is great to have, and having the Clock for Time of Day at top Left is great too.

These are incredibly inexpensive at just $9.85 with free shipping.
I have purchased one recently from the following seller and I received it within 24 days from China. It included the two CR2032 batteries that are needed. One is inside the Display head unit that mounts to the handlebars, and the other battery is inside of the SENSOR.

I have purchased more than a dozen of these INBIKE IC-321 wireless bicycle speedometers over the last three years. I was one of the earliest to first purchase this particular model from China. I have purchased these from at least six different sellers, located in Shen Zhen, Hong Kong, California and elsewhere.
I have devised a way to make these things WORK WELL on the ancient SCHWINN Collegiates/Varsities/Continentals/Suburbans. As you know, the old Varsity/Collegiate has a Blade steel forged fork that is not suited to mounting the sensor as it is designed BECAUSE THE FRONT FORK IS NOT BROOMSTICK LIKE, ROUND IN SHAPE, etc..........the Continental/Suburban also have a very thin tubular fork that is not suited to mounting the sensor as it is designed.
For the first seven or eight, I made a custom mount that ALLOWED THE SENSOR TO HANG OFF OF THE Left Front Axle Nut.
My neighbor came up with a much simpler, and easier to build HANGER to make it work on an ancient Schwinn. He suggested that I try using a common BINDER CLIP that is the size of the Sensor......Attach the BINDER CLIP to the end of the SENSOR using JB WELD Quick under the clip and then wrapping black sewing thread around it and saturating this with JB WELD or $1.49 five min EPOXY from Harbour Freight. Okay, so you remove the left-side chrome wire ear-handle of the Binder Clip, leaving only the right-side chrome wire ear handle...........You wrap thread while at the same time EPOXYING that chrome wire ear-handle.....BECAUSE THAT END OF THE CHROME WIRE EAR HANDLE loop end IS WHAT YOU'LL PLACE UNDER THE NUT & WASHER ON THE FRONT LEFT AXLE, AS THAT IS HOW YOUR Inbike IC-321 can successfully hang from your axle nut... to make it work on Ancient bikes with front forks like that on the Varsity, Collegiate, etc.... After doing that, you simply have to mount the magnet to the spoke on the Varsity, ancient Schwinn etc....such that IT DOES NOT STICK OUT TOO FAR THAT IT HITS THE FORK, BUT still where it passes in front of the sensor that you mounted to hang off the left front wheel nut. On those ancient Schwinns, you will have to epoxy the magnet to the Schwinn spoke because it won't fit and face the direction that you need it to UNLESS YOU EPOXY IT THERE..
*********FOR MODERN BICYCLES, WITH ROUND BROOMSTICK LIKE FRONT FORKS, THIS INBIKE IC-321 SPEEDOMETER mounts easily within two minutes WITHOUT ANY MODIFICATIONS. If I were designing such a product, I see it being better if it were mounted hanging from the left axle nut, but that is just me. I 'm not crazy about the zip tie and 3m superstik adhesive tape under the Sensor base.
Still this is the best old timey DUMB, Digital wireless SPEEDO/ODOMETER. The Display for SPEEDO and ODOMETER is the best. Battery life is superb. Yes, the mounting at the handlebars is cheapy simple, and the zip tie method with adhesive tape for the SENSOR at the fork IS NOT the best method from an engineering standpoint, but it can work okay, because that is how a great many of these type units are attached. Cyclists want zero weight and with that perhaps, a better method of affixing the sensor is simply ruled out or overlooked.

https://www.ebay.com/itm/INBIKE-Wate...m3b36ac0f1f:g:

(#254320316191 $9.85 free shipping directimports1899 from China on the bay)

KC8QVO

Before I upgraded to my Garmin Edge 1000 I used a Sigma BC 16.12 wired computer. It was great. However, the wires started giving intermittent connections after a couple thousand miles.

I have been curious if a wireless version of the computer would hold up over time. Here is a link to a wireless version:
https://www.amazon.com/Sigma-Sport-W...279282&sr=8-11

I may see if I can get a replacement set of wires for the old computer to have as a backup or put on another bike. The computer unit itself still works fine, just the sensor wires are crappy now.

Wiggle

I do actually have two Sigma 16.12 wireless models right now. One on my road bike and one on my wife's bike. I was hoping I could may just find another base and sensor for it and move it between my road bike and my commuting/touring bike but I haven't been able to locate it.

Wiggle

520 for a 520, makes sense. That is definitely getting to the point where it's stretching my budget quite a bit but I'll keep it in mind. I was also looking at the Edge 130.

Wiggle

Turns out I am possibly a lucky person. I went digging around in the bike supply box today and found the box from one of the Sigma 16.12 wireless units we bought.

For some reason in the one of the old boxes there was an extra speed sensor, magnet and base. I have no idea at all why those were included. It was supposed to be the unit with cadence but my wife didn't care about that so we never installed that sensor. Looks like they forgot the cadence and actually provided something more useful.

I went ahead and installed the base, magnet and sensor on the 520. The chain stays are pretty far out on the 520 so I had to angle the sensor in quite a bit but it does seem to work.

The only thing is that I'm not sure that it's treating this new base as a new bike or not. That information isn't in the manual. It does have settings for two bikes but I'm not sure how to define the second bike.

Either way, that's a fine point and I can always just adjust the wheel size manually worst case. Great solution cause I don't have to spend any money and its really easy to transfer the computer between bases.

Sorry I wasn't able to use anyone's input though....

noglider 

@Vintage Schwinn, that $10 computer looks really good. If I were in the market, I'd get that. I've even had totally satisfactory service from the $3 units from ebay. They work flawlessly and reliably.

Wiggle

That really does look like a great deal for price.