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Quarq Dfour with Rotor QXL rings

Posted: Wed Apr 26, 2017 8:53 pm
by TroyG
Anyone running a Quarq Dfour power meter with Rotor QXL rings? Any fitment issues getting the QXL rings on?

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Quarq Dfour with Rotor QXL rings

Posted: Wed Apr 26, 2017 8:53 pm
by Weenie

Re: Quarq Dfour with Rotor QXL rings

Posted: Fri Jul 28, 2017 4:35 am
by CycloTron
According to Rotor's information, the QXL rings are compatible with Shimano 4-arm 110BCD cranks, so should be ok with the DFour.

Re: Quarq Dfour with Rotor QXL rings

Posted: Fri Jul 28, 2017 5:32 am
by TobinHatesYou
Quarq has not yet released its non-round chainring compatible firmware for the DZero or DFour, so any measurement will be inflated by a few percent. As far as I'm aware, they just need to increase the polling rate to account for small changes in angular velocity.

Re: Quarq Dfour with Rotor QXL rings

Posted: Fri Jul 28, 2017 6:00 am
by Jhomewood
TobinHatesYou wrote:Quarq has not yet released its non-round chainring compatible firmware for the DZero or DFour, so any measurement will be inflated by a few percent. As far as I'm aware, they just need to increase the polling rate to account for small changes in angular velocity.

is it in the works?

Re: Quarq Dfour with Rotor QXL rings

Posted: Fri Jul 28, 2017 6:13 am
by TobinHatesYou
Jhomewood wrote:is it in the works?


It is, but I haven't heard a date or even a timeframe.