Quarq Question

Unknown

 I am thinking about switching to a quarq from a powertap but had a question for those who use them. I have read somewhere that in order for the quarq to record data correctly to a Joule 2.0 that you had to install a speed/cadence sensor. Is this accurate?

Thanks!

robin sarner

You do not need to do anything to have power and cadence.

Need wheel sensor for speed and distance.

mancona

Joseph, the issue is the joule uses speed to stop and start the time. So if you go any power meter that does not have speed you will need a speed sensor to use the joule.

FWIW, the garmin computers do not need a speed sensor (as they have gps) and work very well with a quarq.

Dino Sarti

I have a Quarq and love it, but I have never used a Joule. The Quarq needs a magnet right next to the inner ring. This will give you the cadence channel and allows to the unit to do the torque x cadence math. Speed comes from the GPS. If you are a joule guy I don't think you will get speed since the crank cannot tell you how fast you are going. 



The magnet will either mount on a ring behind the cup, on a little peice of aluminum mounted to the wire guide if you have one or glued to the chainstay/ BB. On my Madone, I had to go with gluing to the chainstay/ BB because the Madone is internally wired (no wire guides) and has no BB cups. This is similar to how an SRM works as well.

Edit: wow!  You gotta type fast both Matt and Robin chimed in while I was typing. 

Unknown

Thank you all!

Jeff Unruh

One other issue that I have learned with the Joule versus Garmin 500 - the Joule doesn't record Zero power after 3-4 zero's it records a "null" amount. After 2-3 rides with both units I was struggling to understand the VI being SO much higher with the Garmin. This Quarq/Joule "null" data is the root cause...

I am selling my Joule 2.0 if you are interested as I wanted a Garmin to play on Stava :-)