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Duotrap or crap?

Old 07-30-20, 04:27 PM
  #1  
Elbeinlaw
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Duotrap or crap?

I've been struggling to get my new Bontrager Duotrap on my new Trek to work. It won't sync with any of my devices … or I should say, I can't figure out how to do it. When I look at the documentation on paper or on line, it tells me a lot about how to install the thing, but not how to link it with my phone, watch, whatever.

I know someone out there has dealt with this. If you can help, please!

The diagnostic information:
  • I have a Samsung Note 10+ and a Samsung Frontier 3 Watch. I also use Strava, which does not seem to give me diddly from the computer.
  • When I spin the wheel, the sensor light goes on
  • Most of the time when I go to Bluetooth on my phone (when the light is on) the phone does not pick up the Duotrap
  • One (count'em, 1) time the Bluetooth listed it. But when I tried to synch it gave me an error message. I was so frustrated I didn't record the message, which I should'a.
Is this thing just crap?
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Old 07-30-20, 06:30 PM
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ScottRiqui
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First, as of October of last year, Strava no longer pairs directly with ANT+ or Bluetooth sensors. So you'll have to pair a different app with the sensors and then export the data files to Strava for analysis and display (I use Cyclemeter and have it set to automatically send ride data to Strava at the end of a ride)

Second, you don't pair the Duotrap using the Bluetooth utility for your phone - you pair it directly in the cycling app you want to use. For Cyclemeter, from the main screen you press the three dots at the bottom-right of the main screen to get to the "more" menu, then select "Devices" and press the "+ / Edit" button at the top right. Spin up the rear wheel to wake up the Duotrap sensor and it'll appear in Cyclemeter, ready to add. You can choose whether or not to use cadence data, and whether to use wheel speed sensor data all the time, none of the time, or "Indoors Only" (when the Cyclemeter app won't be receiving GPS data).
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Old 07-30-20, 06:34 PM
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Elbeinlaw
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Scott: Thanks. So if I'm using Map My Ride, I guess I should be able to do the same thing--link it to the Duotrap without using the phone's bluetooth. Maybe it'll work. I'll give it a shot.
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Old 07-30-20, 06:46 PM
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ScottRiqui
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I can't find anything about pairing MapMyRide with any sensors other than heart rate monitors (and even that seems iffy), so I'm not sure whether it's compatible with cadence/speed sensors in the first place. Best of luck, though, and let us know if it works!
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Old 08-01-20, 03:11 PM
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DuoTrap cadence and wheel sensor works well for my son. He's been using it for 2 maybe 3 years now. However he uses it with a Garmin 820 and a Vivosmart HR. Both ant+.


I thought most Samsungs had ant+ built into them. Have you tried that. However if the app it's going to doesn't connect that way then that's an issue too.

I used to use mapmyride. They used to be good at answering support tickets when you go through their site.

Last edited by Iride01; 08-01-20 at 03:16 PM.
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Old 08-02-20, 07:47 PM
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fietsbob 
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Trek dealer consulted?
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Old 08-02-20, 08:20 PM
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But its me
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I had a Duotrap S on a 720 disc that worked without issue with Garmin and Polar head units until the batteries needed replacing. Then it would drop the connection until new batteries. Cannot offer much help with the phone connection, but did you try new batteries? Even if new install, could have been sitting on the dealers’s shelf for some time.
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Old 08-05-20, 01:15 PM
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Originally Posted by Elbeinlaw View Post
Scott: Thanks. So if I'm using Map My Ride, I guess I should be able to do the same thing--link it to the Duotrap without using the phone's bluetooth. Maybe it'll work. I'll give it a shot.
No longer:

https://support.mapmyfitness.com/hc/...bility-Changes

The Wahoo App (not the Element companion) should pair using bluetooth to your DuoTrap. I've done it (though I use a computer connected with Ant).

Oh, and I've had my Duotrap for 4-5 years and it works just fine. It's not crap (though the rubber band holding the magnet on the crank will fail . . .)

Last edited by drewguy; 08-05-20 at 01:26 PM.
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