Cycling Computers Reviews

SIGMA BC1106 DTS Wireless Bicycle Speedometer

The BC 1106 with its diversity of functions is the right choice for the athletically ambitious biker. The integrated storage chip prevents loss of pre-settings and total values during power losses or even battery changes, with low power scenarios announced in due time by the low battery indicator. Two wheel size settings are possible, which can be recognized automatically with an optional Bike 2 Sensor, allowing riders to use their BC 1106 interchangeably between any combination of two bicycles.

Digital Transmission explained.

A peek inside the BC 1106 DTS’ box.

Digital Transmission System (DTS) Explained
With 2-channel radio transmission (km/h and pedal frequency) and 100% digital encoding without data loss, the DTS system guarantees 100% data security of current speed and pedal frequency values during wireless reception. It does this by calculating all relevant data, encoding it and transmitting it in data packets to the integrated receiver in the bike computer. Disturbances such as power lines or mobile phones are no longer a problem as transmission is carried out over the so-called low frequency. A double security system also ensures that only the data packets from your own transmitter are evaluated by the receiver. This means that group rides are no problem.

A further security measure is redundant data transmission so that no data can be lost. The size and quality of the receiver has also been optimized by a specially developed SIGMA chip (ASIC) and integrated into the bike computer which also saves on battery life.

General Functions:

• 7 language settings, Dot matrix LCD readout, watertight design
• Low battery indicator
• Backup function/through saving chip
• Two wheel sizes adjustable
• Clock and model name in standby

Bike Functions:

• Actual speed
• Average speed
• Comparison of actual and average speed
• Maximum speed
• Trip distance
• Total distance bikes 1+2

Time Functions:

• Clock
• Riding time
• Total riding time bikes 1+2

What’s in the Box?
BC 1106 DTS bicycle computer with built in sensor, DTS speed transmitter, power magnet, twist-lock handlebar mount, 3-volt CR2032 lithium battery, 42mm O-ring, 32mm O-ring.

Manufacturer’s Warranty
Five-year warranty on defective parts or products.

About Sigma Sport
Sigma Sport represents German technology at its highest level, combining innovative design with precision engineering. Sigma tests all their products in their in-house laboratories to withstand the harshest conditions, ensuring quality continually throughout production. All Sigma Sport standard lights conform to the stringent German traffic standard, and all Sigma Sport products are CE-approved.

User Ratings and Reviews

5 Stars Great Computer
Easy set up and directions and great functionality. No problems what-so-ever picking up the wireless signal.

2 Stars Not very good, Blackburn is better
This one actually made me truly appreciate my Blackburn Delphi 4.0, even for all its own issues, it was so much better than this one. This one takes forever to sync after going to sleep and sometimes never does, almost always have to hit a button to wake it up. I’ve tried adjusting the sensor distance and gap, that’s not the issue. What is really awful is the accuracy and slow pace of updates. This reads ONLY IN .5 MPH INCREMENTS! That means accuracy is +/- .5 mph or AS MUCH AS A FULL 1 MPH! Furthermore, updates seem to be infrequent, as is obvious when braking. I’ll be at a dead stop for 3-4 seconds before it reads 0 mph. If you are a cyclist who seriously uses a cyclometer for feedback, this one is useless. There is no good way to tell if the gear change or extra effort you just put in are getting you any acceleration… things that are almost intuitive with the Blackburn, which reads to .1 mph and seems to update real-time. Oh, and those godawful rubber bands for mounting… Sure they are easy… until you screw up and one goes flying never to be seen again… And when you are done, the head unit swivels around the handlebars requiring adjustment constantly. This is really only a good cyclometer for casual users and kids. I would never recommend it to anyone who has a serious need for real-time and accurate performance feedback. I will be buying a Blackburn Delphi again soon. Even if it dies again after a year (note, a year for me is 8000-10000 miles, so expect yours to last longer), it’s a better deal because it does the job I need. This one is just a waste of handlebar space.

2 Stars Not weatherproof
At the begining this product was working perfectly, to my surprise because this computures usually give you a hard time. This was until I went to to a trial with losts of water and lots of rain, and some water must have gotten into the trasnmiter, because it wont work anymore. The display turns on fine, but wont receive any signal. I believe, these wireless computers are not worth it, for this reason. It worked fine about 3 or 4 times. Lost my money.

Buy/More Info

SIGMA BC1106 11 function Topline Wired Bicycle Speedometer

The BC 1106 with its diversity of functions is the right choice for the athletically ambitious biker. The integrated storage chip prevents loss of pre-settings and total values during power losses or even battery changes, with low power scenarios announced in due time by the low battery indicator. Two wheel size settings are possible, which can be recognized automatically with an optional Bike 2 Sensor, allowing riders to use their BC 1106 interchangeably between any combination of two bicycles.

General Functions:

• 7 language settings, Dot matrix LCD readout, watertight design
• Low battery indicator
• Backup function/through saving chip
• Two wheel sizes adjustable
• Clock and model name in standby

Bike Functions:

• Actual speed
• Average speed
• Comparison of actual and average speed
• Maximum speed
• Trip distance
• Total distance bikes 1+2

Time Functions:

• Clock
• Riding time
• Total riding time bikes 1+2

What’s in the Box?
BC 1106 bicycle computer, two-piece spoke magnet set, bike sensor/receiver/mount with wire, 3-volt CR2032 lithium battery, 42mm O-ring, 32mm O-ring.

Manufacturer’s Warranty
Five-year warranty on defective parts or products.

About Sigma Sport
Sigma Sport represents German technology at its highest level, combining innovative design with precision engineering. Sigma tests all their products in their in-house laboratories to withstand the harshest conditions, ensuring quality continually throughout production. All Sigma Sport standard lights conform to the stringent German traffic standard, and all Sigma Sport products are CE-approved.

User Ratings and Reviews

5 Stars Sigma Sport BC1106 Wired Cycle
Hi All,

I did not receive the 2nd bike kit as noted in the product info. I had forgoten about it when I received the Sigma BC1106 till it was mentioned in the survey. The Sigme 1106 works great, does what I wanted and appears accurate. I would expect the company will acknowledge this omission.

art

5 Stars Does everything it is supposed to…..
That’s it, you need to read the fairly straightforward manual and install it correctly, but the bang for the buck here is teriffic. The wire is unobtrusive and I guess that the “unwired” version would have two batteries; one in the sending unit that seems to me would take more power and maybe go out quicker. My guess only.

If you have a bike path with mileage markers you can tweak the unit to your bike by changing the wheel size that you input in it, making it very accurate.

I find its more fun to know your speed, distance, average speed, etc., it gives you something to shoot for on your next ride. Plus it weighs about nothing; you could wear thinner socks and make up for it.

Have fun.

5 Stars Cool little bike computer, Installation can be tricky.
This was my first bike computer and I’m happy with my choice. It does everything it’s designed to do quite well. There is a little bit of a learning curve as far as navigating through its options/functions but once you get it there no issue at all.

Installation was a little more involved then I thought it would be and I am very mechanically inclined. Nothing your average DIY’r can’t handle just some interesting things to deal with like placement of the magnet and dealing with, for my install anyway, an overly long sensor wire. You have to get a little creative to keep the wire secured and out of the way of moving parts.

The first mount/sensor wire assembly that I received with the computer was faulty. After much remounting and head scratching I called the US contact for Sigma. He was very helpful and told me that while every computer is tested for operation the mount and wire assembly are not. He sent out a replacement mount/wire (at no cost) and once I swapped it out the computer worked perfectly. I don’t I think I broke the wire on the first one as I was extremely careful with the installation but just in case, be careful as it is a small wire and you have to make several turns and twists to get installed.

The manual is one of those international mutli-language picture books. I hate them but if you spend some time deciphering it before you start you can get it done. As one of the other reviewers stated, getting you tire size right is critical to the accuracy of the computer. So spend a few extra minutes here and actually measure the circumference. Using the chart in the manual will get you close but not exact.

Once installed the combination of the double sided tape and rubber ring used to mount the computer to the stem or handlebars is actually quite secure. I have no fear of it coming off in normal use. A rubber ring is also used to mount the wheel magnet sensor to the fork. No tape is used here, probably to allow easier adjusting but doesn’t feel quite as secure because of this. I’ve had no problem but now that I have it positioned properly I may add some d/s tape or a wire tie to lock it in place. The spoke magnet locks on very securely but follow the instructions closely on this part.

I really like this product and the customer service was excellent. If it was stolen or lost I would by another immediately. Have fun with it.

5 Stars several useful enhancements for a computer with basic functions
I recently bought one of these and now plan to buy another.

One thing I did not realize when I bought this computer is that it requires no tools to install, which is a nice feature. (Only if you want to mount it on the stem instead of the handlebar do you need a small Phillips.)

The real reason I bought it was my perpetual annoyance with every other computer I ever owned that changing the battery loses ALL data, e.g., mileage totals, wheel circumference, etc. This one promises to save all of that upon battery change, and I hope it does.

The wheel circumference chart in the little manual was quite accurate for me. On my first ride it showed 22.6 miles. I then plotted the route on Google Maps and got 22.3, so all I have to do is tweak it down a tiny bit.

Display is large with good contrast, and I had no problem reading it with my polarizing sunglasses, an issue I had with other computers. Beyond that, the basic functions are the basic functions.

5 Stars Great!!! make sure you know your whell size
This is a very good product and I have found it very usefull and accurate. This is what I think of it:

1. It was very easy to install and adjust. (Note you do not have to

place the reciever any were special on the fork, since it counts the

time it takes the wheel to rotate a revolution.)

2. The features are relevant and intuitive making it easy and simple to

check different things on it while riding.

3. It looks great and on my black and gray bike, you can hardly see

it!!!

Their is on I would like to explain on this though. After reading through the instructions carefully, (it wasn’t that hard) I realized that the wheel size that you had to put in it was the circumference of the outermost part of the wheel in centimeters (it is made in Germany). Meaning that for my fat mountain tire the size was 2,073, unlike my friend who had his at 2,600 (for a 26″ tire) meaning that he was going 25% faster than he actually was. So make sure measure correctly measure it.

Buy/More Info

SIGMA BC2006MHR DTS Wireless Bicycle Speedometer with Heart Rate Monitor and Altimeter

Measures altitude, heart rate, speed and temperature – all in one. The digitally coded BC 2006 MHR combines the classic features of a wireless bike computer with the most important altitude, heart rate and temperature functions. With the easy to operate 4-button navigation, mountain specialists and touring cyclists have fast access to all the important information on their ride. You can read 4 current values (altitude, heart rate, speed and another optional function) in one clear screen. All the functions on the computer can also be used off the bike using the special hiking mode. Integrated storage chip – pre-settings and total values are retained during battery change. Walking mode – additional benefits from use as a hiking computer. Includes hiking fastener. Other features include: 2 Wheel sizes, Low battery indicator, backup function, LCD backlight, 7 language selection

User Ratings and Reviews

1 Star locks up and stops registering
If you stop to talk to friends this bike computer will lock up and get in a state that no longer registers speed. The only way to reset it is to take it out of the mount and put it back in, not very safe when you’re trying to ride along. The rubber band mounts did not fill me with confidence and I came back to my garage one day to find the sensor on the ground. good job that didn’t happen on a ride. The provided bands are not big enough to go around mtb suspension forks. Try a VDO MC1.0 Wired Cycle Computer instead it’s much better (but no Heart Rate Monitor).

3 Stars Filling in the blanks from prior reviews
I’ve had this unit for 6 months. It pretty much works as advertised, but-battery life and magnet strength in Xmitter is questionable. The sender has to be about 1-2 mm from the battery. That’s a pretty tight fit, esp with carbon front forks. As the battery on the sender weakens, there’s no real communication from it to tell what the problem is (I got a “Too Many Signals” error). On the computer unit, Temperature gauge isn’t accurate, reads way too high, and there doesn’t seem to be any way to calibrate it. The manual is thorough and detailed, but somehow confusing (What can I say? It’s written by English speakers, not English thinkers)

On the positive side, The readout is very clear; you can do individual parameter resets, the rubber bands (o-rings really) are pretty tough, I haven’t broken one yet, and it has a dual mount, stem or handlebar, which was very important for me, as I put safety brakes on my handle bar, which ate up real estate. At 120 bucks, it’s pricey, but at 83? IMO that’s getting into bargain territory for the feature set.

1 Star The sigma bicycle computer is a REAL PICE OF JUNK
I used this imitation of bicycle computer for a little more than a month with terrible results it just never work, I really do not have words to describe this nusty mistake I made buying it. I finally replace it with a real computer that cost me about $25.00 dollars a cateye by the way this nusty product (the sigma) cost me $120.00 dollars sorry I do no give it not even a star. it end at trash can.

1 Star JUNK!
The other reviews are pretty much true, one obviously works for Sigma. This ‘Computer’ is junk. Just to add, I’ve used this for 3 months. I wanted it for its heart rate monitor and altimeter readings. The HRM that you strap on has the battery compartment opening against the skin, so when you sweat it stops working and has to be dried out- so half way through my ride I get no heart readout. The altimeter just gives you the current altitude, it doesn’t tell you what your degree of climb is! Why not- it has the information in the ‘computer’ but can’t calculate the degree of the hill I’m on? Don’t waste your money, I won’t get burned by Sigma again.

Now I’m using my Nokia E66 handy with GPS, at least I can upload my ride and review my stats online.

1 Star waste of time and money
terrible instructions and a bad install setup – do you really want to be driving a set screw into your spoke? then i never could get the transmitter and head unit to sync. the main brands are so much easier to get working why bother?

Buy/More Info

SIGMA BC2006MHR DTS Wireless Bicycle Speedometer with Heart Rate Monitor and Altimeter

Measures altitude, heart rate, speed and temperature – all in one. The digitally coded BC 2006 MHR combines the classic features of a wireless bike computer with the most important altitude, heart rate and temperature functions. With the easy to operate 4-button navigation, mountain specialists and touring cyclists have fast access to all the important information on their ride. You can read 4 current values (altitude, heart rate, speed and another optional function) in one clear screen. All the functions on the computer can also be used off the bike using the special hiking mode. Integrated storage chip – pre-settings and total values are retained during battery change. Walking mode – additional benefits from use as a hiking computer. Includes hiking fastener. Other features include: 2 Wheel sizes, Low battery indicator, backup function, LCD backlight, 7 language selection

User Ratings and Reviews

1 Star JUNK!
The other reviews are pretty much true, one obviously works for Sigma. This ‘Computer’ is junk. Just to add, I’ve used this for 3 months. I wanted it for its heart rate monitor and altimeter readings. The HRM that you strap on has the battery compartment opening against the skin, so when you sweat it stops working and has to be dried out- so half way through my ride I get no heart readout. The altimeter just gives you the current altitude, it doesn’t tell you what your degree of climb is! Why not- it has the information in the ‘computer’ but can’t calculate the degree of the hill I’m on? Don’t waste your money, I won’t get burned by Sigma again.

Now I’m using my Nokia E66 handy with GPS, at least I can upload my ride and review my stats online.

1 Star locks up and stops registering
If you stop to talk to friends this bike computer will lock up and get in a state that no longer registers speed. The only way to reset it is to take it out of the mount and put it back in, not very safe when you’re trying to ride along. The rubber band mounts did not fill me with confidence and I came back to my garage one day to find the sensor on the ground. good job that didn’t happen on a ride. The provided bands are not big enough to go around mtb suspension forks. Try a VDO MC1.0 Wired Cycle Computer instead it’s much better (but no Heart Rate Monitor).

1 Star The sigma bicycle computer is a REAL PICE OF JUNK
I used this imitation of bicycle computer for a little more than a month with terrible results it just never work, I really do not have words to describe this nusty mistake I made buying it. I finally replace it with a real computer that cost me about $25.00 dollars a cateye by the way this nusty product (the sigma) cost me $120.00 dollars sorry I do no give it not even a star. it end at trash can.

1 Star waste of time and money
terrible instructions and a bad install setup – do you really want to be driving a set screw into your spoke? then i never could get the transmitter and head unit to sync. the main brands are so much easier to get working why bother?

3 Stars Filling in the blanks from prior reviews
I’ve had this unit for 6 months. It pretty much works as advertised, but-battery life and magnet strength in Xmitter is questionable. The sender has to be about 1-2 mm from the battery. That’s a pretty tight fit, esp with carbon front forks. As the battery on the sender weakens, there’s no real communication from it to tell what the problem is (I got a “Too Many Signals” error). On the computer unit, Temperature gauge isn’t accurate, reads way too high, and there doesn’t seem to be any way to calibrate it. The manual is thorough and detailed, but somehow confusing (What can I say? It’s written by English speakers, not English thinkers)

On the positive side, The readout is very clear; you can do individual parameter resets, the rubber bands (o-rings really) are pretty tough, I haven’t broken one yet, and it has a dual mount, stem or handlebar, which was very important for me, as I put safety brakes on my handle bar, which ate up real estate. At 120 bucks, it’s pricey, but at 83? IMO that’s getting into bargain territory for the feature set.

Buy/More Info

SIGMA BC2006MHR DTS Wireless Bicycle Speedometer with Heart Rate Monitor and Altimeter

The digitally coded, the BC 2006 MHR DTS combines the classic features of a wireless bike computer with the most important altitude, heart rate and temperature functions. With the easy to operate 4-button navigation, mountain specialists and touring cyclists have fast access to all the important information on their ride. You can read 4 current values (altitude, heart rate, speed and another optional function) in one clear screen. All the functions on the computer can also be used off the bike using the special hiking mode.

Digital Transmission explained.

The top model for heart rate measurement.

Digital Transmission System (DTS) Explained
With 2-channel radio transmission (km/h and pedal frequency) and 100% digital encoding without data loss, the DTS system guarantees 100% data security of current speed and pedal frequency values during wireless reception. It does this by calculating all relevant data, encoding it and transmitting it in data packets to the integrated receiver in the bike computer. Disturbances such as power lines or mobile phones are no longer a problem as transmission is carried out over the so-called low frequency. A double security system also ensures that only the data packets from your own transmitter are evaluated by the receiver. This means that group rides are no problem.

A further security measure is redundant data transmission so that no data can be lost. The size and quality of the receiver has also been optimized by a specially developed Sigma chip (ASIC) and integrated into the bike computer which also saves on battery life.

General Functions:

• 7 language settings, Dot matrix LCD readout, watertight design
• LCD backlight
• Low battery indicator
• Backup function/through saving chip
• Two wheel sizes adjustable
• Clock and model name in standby

Heart rate functions:

• Current heart rate
• Average heart rate
• Maximum heart rate

Bike Functions:

• Current speed
• Average speed
• Comparison of actual and average speed
• Maximum speed
• Trip distance
• Programmable trip section counter
• Total distance bike 1*
• Total distance bike 2*
• Total distance bikes 1+2*

Time Functions:

• Clock
• Stop watch
• Riding time
• Total riding time bike 1*
• Total riding time bike 2*
• Total riding time bikes 1+2*
• Programmable countdown timer forward/back

Altitude Measurement Functions:

• Current altitude
• Total altitude per day uphill/downhill
• Total altitude uphill bike 1*
• Total altitude uphill bike 2*
• Total altitude uphill bike 1+2*
• Current temperature

Walking functions:

• Walking time
• Current altitude
• Total altitude per day uphill/downhill
• Current temperature
• Heart rate functions (like 1706 HR)
• Timer
• Clock

Manufacturer’s Warranty
Five-year warranty on defective parts or products.

About Sigma Sport
Sigma Sport represents German technology at its highest level, combining innovative design with precision engineering. Sigma tests all their products in their in-house laboratories to withstand the harshest conditions, ensuring quality continually throughout production. All Sigma Sport standard lights conform to the stringent German traffic standard, and all Sigma Sport products are CE-approved.

User Ratings and Reviews

1 Star locks up and stops registering
If you stop to talk to friends this bike computer will lock up and get in a state that no longer registers speed. The only way to reset it is to take it out of the mount and put it back in, not very safe when you’re trying to ride along. The rubber band mounts did not fill me with confidence and I came back to my garage one day to find the sensor on the ground. good job that didn’t happen on a ride. The provided bands are not big enough to go around mtb suspension forks. Try a VDO MC1.0 Wired Cycle Computer instead it’s much better (but no Heart Rate Monitor).

1 Star The sigma bicycle computer is a REAL PICE OF JUNK
I used this imitation of bicycle computer for a little more than a month with terrible results it just never work, I really do not have words to describe this nusty mistake I made buying it. I finally replace it with a real computer that cost me about $25.00 dollars a cateye by the way this nusty product (the sigma) cost me $120.00 dollars sorry I do no give it not even a star. it end at trash can.

1 Star Sigma wireless speedometer with Heart Rate Monitor
I thought this product was a good fit for my needs – an inexpensive wireless heartrate/speedometer. As it turns out, the directions for setting the unit were very difficult to follow and then the heart rate monitor stopped working within one week. now the battery is running low after about a month. I would have been much better off spending a few extra dollars up front to avoid the frustration and battery costs, not to mention that i now have a unit that doesn’t function as a heartrate monitor. very disappointing. the upside is you get to learn from my mistake rather than making it for yourself.

1 Star waste of time and money
terrible instructions and a bad install setup – do you really want to be driving a set screw into your spoke? then i never could get the transmitter and head unit to sync. the main brands are so much easier to get working why bother?

1 Star JUNK!
The other reviews are pretty much true, one obviously works for Sigma. This ‘Computer’ is junk. Just to add, I’ve used this for 3 months. I wanted it for its heart rate monitor and altimeter readings. The HRM that you strap on has the battery compartment opening against the skin, so when you sweat it stops working and has to be dried out- so half way through my ride I get no heart readout. The altimeter just gives you the current altitude, it doesn’t tell you what your degree of climb is! Why not- it has the information in the ‘computer’ but can’t calculate the degree of the hill I’m on? Don’t waste your money, I won’t get burned by Sigma again.

Now I’m using my Nokia E66 handy with GPS, at least I can upload my ride and review my stats online.

Buy/More Info