Bicycle Mechanics - Help on installing cadence sensor !!

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akerman
07-07-04, 08:19 AM
I just bought a Sigma BC1600 computer, along with a cadence sensor kit.
The instruction manual for the bc1600 is lousy to say the least- very tiny, and it has like 10 languages at once, so you have to turn 3 pages for each sentence of English text... it's all very confusing - but, I think, that I can manage installing it even so (there's a video on the sigma site).

The problem is with the cadence sensor - it does not come with ANY kind of instruction manual - there is one 1x2 cm picture on the bag, but it's not enough to tell how to install it.. can anyone help me? I've searched google, and I've been at the sigma site, but can't find any guides to it...


OregonBound
07-07-04, 08:32 AM
Normally the pickup unit is attached somewhere near the bottom bracket and the magnet is attached to a crank arm.

Paul

Retro Grouch
07-07-04, 10:09 AM
I just bought a Sigma BC1600 computer, along with a cadence sensor kit.
The instruction manual for the bc1600 is lousy to say the least- very tiny, and it has like 10 languages at once, so you have to turn 3 pages for each sentence of English text... it's all very confusing - but, I think, that I can manage installing it even so (there's a video on the sigma site).

The problem is with the cadence sensor - it does not come with ANY kind of instruction manual - there is one 1x2 cm picture on the bag, but it's not enough to tell how to install it.. can anyone help me? I've searched google, and I've been at the sigma site, but can't find any guides to it...

What exactly is your problem? The Sigma cadence sensor has a couple of pretty cheesy contacts that plug into the handlebar mount. The crankarm magnet and pick up should be pretty self-explanatory.


madpogue
07-07-04, 11:36 AM
I have a few-year-old Sigma 1200, with cadence. Only thing is, it's on a recumbent, and because of the distance between the chainstay and the crank arm, I used a reflector bracket to mount the sensor, to span that distance. As I recall, though, the "standard" mounting is to mount the sensor base to the chainstay with two zip-ties (similar to the wheel sensor), then snap/slide the sensor into the base. Then, mount the magnet to the inside of the crank arm with (IIRC) a single zip-tie.

BTW, I downloaded the manual for mine from Sigma's web site, and noticed the same thing; no "visuals" for mounting the cadence sensor. I checked the manuals for their other models, and they all seem to be lacking it.

akerman
07-07-04, 12:38 PM
hey!
my problem was, that I did not know where to put the cadence sensor.. but when I opened the bag, there was 4 pictures on the inside of the piece of cardboard that held the bag together, explaining briefly how to install it. As far as I could tell, the sensor had to be mounted on a pedal - so I did that... was that right?
It seems to be working.. I found that I normally pedal at 50 - so I tried 80-90 which is recommend.. I felt like a fool, pedaling insanely fast compared to anyone else - I guess I just have to get over that :)

EagleEye
07-07-04, 01:07 PM
I found that I normally pedal at 50 - so I tried 80-90 which is recommend.. I felt like a fool, pedaling insanely fast compared to anyone else - I guess I just have to get over that :)

Yeah, you'll get over it really quick when you start dropping everybody 'cuz you're pedaling more efficient now. :)

madpogue
07-07-04, 10:11 PM
hey!
my problem was, that I did not know where to put the cadence sensor.. but when I opened the bag, there was 4 pictures on the inside of the piece of cardboard that held the bag together, explaining briefly how to install it. As far as I could tell, the sensor had to be mounted on a pedal - so I did that... was that right?
It seems to be working.. I found that I normally pedal at 50 - so I tried 80-90 which is recommend.. I felt like a fool, pedaling insanely fast compared to anyone else - I guess I just have to get over that :) Actually, the sensor is what's at the end of the wire; it mounts on a chainstay, usually. The thing that mounts on the pedal (or, more likely the crank arm) is a magnet, which the sensor "picks up" each time it whizzes by a couple of millimeters away. Yeah, 80-90 seems wicked fast to begin with, but once you build up to keeping that cadence, your average speed goes up too, and pedaling at 50-60 will start to feel like you're "lugging it".