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Questions tagged [sensor]

Questions relating to Sensors on a bike, whether its cadence or wheel RPM, or a heart-rate monitor (HRM)

0 votes
1 answer
66 views

Brake sensor wire

I have an electric bike, and I am looking for an electric wire that is attached to the brake lever. how can I get it? regards. Hussein Talib.
Hussein Ali's user avatar
4 votes
1 answer
416 views

eBike torque sensors: Are hub systems capable of the same ride feel as mid-drive?

There are two basic types of ebike controller - cadence or torque sensing. Typically mid-drive ebike systems use torque sensing to control the motor, and cheaper hub drive systems often use cadence ...
SamA's user avatar
  • 2,696
1 vote
0 answers
170 views

Vanmoof bottom bracket sensor

I have a Vanmoof S2 and had the bottom bracket replaced ~6months ago. Now I experienced cutout of the motor again and recently no support at all. I disassembled the bike and found no signs of wear of ...
Paamand's user avatar
  • 111
4 votes
5 answers
1k views

How to securely attach a single-piece cadence sensor on bikes with steeply-angled chainstays?

With chainstays set so steeply outward to accommodate wider tyres, the gap between the cranks and the chainstays is truly minimal. How do you secure your single-piece (accelerometer-based) cadence ...
Sam7919's user avatar
  • 9,606
0 votes
2 answers
13k views

How do I get a Garmin Cadence Sensor 2 to pair with an iPhone?

I have bought a Garmin Cadence Sensor 2. After installing it on the bike and rotating the cranks to wake it up, theoretically I should be able to pair it with my iPhone but it doesn’t appear in ...
Robert Atkins's user avatar
0 votes
1 answer
170 views

What's this red cylinder thing below the front axle?

Criggie: What's the red cylindrical thing on the drive side of the front fork? Is it part of the timing system? Carel: They used 'simple' speed sensors in those days, no GPS! It is the sensor with a ...
Criggie's user avatar
  • 128k
3 votes
1 answer
3k views

3% difference speed sensor vs GPS

I'm using the Wahoo ELEMNT BOLT with RPM speed sensor. First few rides with my dad I noticed my measured distance was about 2-3% off from his, I used the standard 2.096m size of my wheel (700x23C). He ...
xigoL's user avatar
  • 31
4 votes
2 answers
382 views

Installation of round bike cadence sensor - in the end of crank screw?

I got a "LIVALL® P1 Smart Bicycle/Bike Nano Cadence Sensor", round and flat which appears to have a screw in for the end of the crank. However on all the bicycles I see there is the hexagonal screw ...
NoBugs's user avatar
  • 461
0 votes
1 answer
188 views

Ancheer 250watt Motor Hall Sensors?

I need to replace the 3 hall sensors in this 36v 26" hub motor for ancheer bike. I purchased the 41F/0H41/SH41/SS41F/S41 Bipolar Hall Element Sensor TO-92UA but it is bigger and does not fit. i ...
snurok's user avatar
  • 1
1 vote
3 answers
2k views

Cadence or speed sensor for training

Which is better for training, cadence or speed? With the sufferfest both are displayed does it make sense to use both while training?
Jerome's user avatar
  • 11
11 votes
2 answers
14k views

Wahoo Speed sensor: how does it work, exactly?

The Wahoo Speed sensor doesn't use a magnet to count the RPM, it's a single-unit and "(...) a 3-axis accelerometer is used to determine the rotation of the hub and thus your speed" (source) ...
kryger's user avatar
  • 498
1 vote
2 answers
370 views

Need magnet for RPM and speed sensors

I bought used speed and RPM sensor by echowell. Here is a picture with this product and I highlitghted in red components that are missing. So as I unserstood this is magnet for sensors. Question: can ...
Vladyslav K's user avatar
4 votes
1 answer
1k views

What's the difference between power meter and bike computer?

I am currently using a IpBike computer app (on Android) with DuoTrap Speed and Cadence sensors on my bike. I was reading about power meters and how they would help in training by assessing the power ...
Uresh Kuruhuri's user avatar
0 votes
1 answer
165 views

pairing a Duotrap sensor the the ibike Newton

Is a Duo-trap speed/cadence sensor compatible with an I-bike Newton head unit? I can't make it pair up. I've tried keeping it a decent distance from other sensors and have tried resetting it, and ...
A. MacDonald's user avatar
2 votes
1 answer
757 views

Garmin Cadence Sensor

I have just changed the battery in my garmin cadence sensor on my road bike, but when I press the reset button only the red light shows but no green light. Anyone know why? Thanks
Craig Lingard's user avatar

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