Customer Reviews

SIGMA BC906 9-Function Topline Wired Bicycle Speedometer

5 star:		(44)
4 star:		(22)
3 star:		(4)
2 star:		(0)
1 star:		(4)

 

 

The BC906 replaced three cheapy Chinese-made cyclocomputers. Two lasted a year and the most recent I gave up on after 3 weeks. I then decided to buy a quality wired cyclocomputer - and the BC906 fitted the bill. I chose wired because I found wireless was affected by my flashing LED headlamp - the flashes were interpreted as speed when the two were adjacent.

I'm very pleased with the BC906 - it's accurate, easy to fit (no tools required), and highly legible. It's easy to set-up although the pictogram-based instruction book is not particularly easy to follow and could be better.

It doesn't have a backlight or ambient temperature - nice-to-have but not essential features. I chose it over a similarly featured and priced Cateye because the BC906 had a larger, clearer display.

Highly recommended.

First, since nothing on this page seems to actually list it, these are the "9 functions":
- Total distance (odometer)
- Total time
- Trip distance
- Trip time
- Average speed
- Maximum speed
- Clock
- Current speed
- Comparison of average and current speed

If you're comparing this with the BC1106 11-function computer and getting confused, the two extra "functions" are total distance and total time for a second bike. The BC1606 adds sectional trip distances, a backlight, and cadence measurements. See this page for comparing the rest: http://www.sigmasport.com/en/produkte/bikecomputer/vergleichstabelle/

Overall, it does what it's supposed to and does it well. The numbers are big enough so that they're easy to read on a quick downward glance, and the adjustable-contrast LCD display remains readable in a variety of lighting conditions. There are three buttons, which actually makes the computer more intuitive. Upper left is "Set", upper right is "Reset", and the entire bottom of the device is "Mode". You should only ever need to use the big "Mode" button while riding.

P.S. Note to other reviewers: all bike computers are "difficult to install". That's why you only have to install them once. Like all other cyclocomputers, you'll spend at least 20 minutes trying to loop the wire just right, figure out how each piece actually attaches together, and setting up the computer for your wheel size.

I've put a few miles on this and it has been accurate and wasn't really too hard to assemble. Yes, you do have to keep the book in case you change your wheels or your tires and have to reprogram the sizes to get accurate readings, but this really isn't hard nor something surprising. I really like being able to see the average speeds along with how long it took me to go x miles. A good solid product. I even dropped it once with no damage.

This is a great addition to anyone that want to keep track of how far and how long they bike. It is easy to install, and since I have installed it has required no adjustments. This unit keeps track of what you want to know. It is also very easy to check while riding.

I've used various bike computers, the BC906 is a basic (basic but enough) strong, reliable, easy to set up model.
The BC906 as only one drawback: the manual as been written by some kind of sadistic psychopath. On the other hand, setting it up on the bike is a 5 minutes process (configuring settings requires some zen lessons, but once it's done it's done, so...).
Under all other aspects, the BC906 does want it pretends to do : give basic data about your ride in a very reliable and precise manner (i checked for example the distance with a GPS.. perfect).
Display is easy to read (even if switching from one display set to another while riding is not that easy, because the button is small and requires a strong pressure).
On the reliability department, my BC906 as never had a single problem (I've had numerous problems with wireless computers, the wire seem to be a better solution when it comes to reliability) I even use it under the rain without problem.
For those living in an area where thieves are a problem, the computer is very easy to take away from its dock, and is very small so very easy to carry on..
My conclusion is simple : for a lot of people, and considering its low price, the BC906 is de facto requirement for a new bike. For those with a moderate sport approach it's convenient to have data such as speed, average speed, distance and so on, and even without any sport approach, it's pleasant and useful to know what distance we have covered, to have the time right in front the eyes without needing to try to see the watch on the wrist and so on.

The good. Easily readable display, quick and simple setup.

Could be better. Speed resolution is 0.5 mph. Uphill, at low speeds higher resolution would be good.

I'd like to see the trip time and trip length on the same screen. If you want to see the other, then you end up paging through all modes before you return to the original page.

This is my 3rd Sigma and Ive only had great experience with their cyclocomputers. Easy to install within 30 minutes and option to have on stem or bar. Chose the stem like many of the pros. No tools are needed just elastic bands and a plastic tie for the wire down the fork. Easy to read and the buttons are very easy to access. Readouts seem accurate and the arrow up or down to show you where you are on the average speed is great.

Only gripe is when to reset for another ride you need to reset each reading (trip time, average speed, fastest speed...) in my past sigmas, I reset the trip time and it reset all the other readings.

The speedometer was very easy to install and set up. I did have a problem getting the remote sensor magnet to communicate with the computer so I called the toll free support phone number. I talked to Bryan who helped me figure out what the problem was and how to correct it. Problem solved and the speedometer is working great. I would recommend this product to anyone looking for a bike speedometer

Update: 07-03-09 I sold my motorcycle and the cycle computer was still running great. I had an issue where the rare earth magnet that I expoxied to the brake rotor got loose. I reapplied more epoxy to solve the problem.

Update: 04-24-08 no problems except that it was not measuring speed correctly read 40mph at 70mph etc. Changed the battery and it is fine again.

Complaint: it is HARD to set up. I have to get the manual out EVERY time. The manual contains errors and I had to update it with a pencil.

Works fine even thought I park outside in direct sunlight.

I have been using this on my motorcycle after the trip meter stopped working. This required some modification and gluing the rare earth magnet to the front fork with epoxy glue.

The cycle computer has worked great and can read speads over 100mph, I have been told the max is 160mph. I've been using it for a year and it replaced the older BC800? I have put around 3,000 miles on it. No problems ever same battery so far.

Complaints:

don't throw your manual away. It is tricky to get in and out of the setup modes.

I wish it had a light for night time with a 5 second delay so I could push it and read it then it would go off again. It is the most reliable part of my motorcycle.

First you can't really beat the bang for your buck. Takes only 5 minutes to pop on. Only complaint is the manual isn't very helpful but you can figure it out if you stare at it long enough. The multiple features it has includes items that every bicyclist wonders while on a ride; Speed, Distance, AVG Speed, Trip Time, Time, etc. Display doesn't take up to much room on the bike and the display is easy to read, while riding.