Need technical advice for Shimano + Quarq DFour

Jan 2, 18 14:40

Post #1 of 15 (3123 views)

Hi guys,

I currently have an ultegra 6800 crank set. As i want to upgrade my setup with a Quarq Power meter i got few questions:

1. I found out i need to get a new Bottom Bracket (Currently Have a Shimano Pressfit BB86), will any sram gxp bb fit?
2. As i don't want to buy a whole new powermeter if i get a new bike / upgrade to Ultegra R8000, Will the Powermeter still fit with the new groupset (As the other version, i.e. DFour91 seems to be especially built for this purpose) or could i just use the whole crank set, with R8000 derailleurs etc.?

Many thanks for any help and or suggestions on how to make this "project" work efficiently.

Best regards,
Alex

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 2, 18 14:48

Post #2 of 15 (3113 views)

Yeah just switch your BB86 (Shimano) bottom bracket to the gxp pressfit 86 and you are good to go

Re: Need technical advice for Shimano + Quarq DFour [titemple652] [ In reply to ]

Jan 2, 18 14:50

Post #3 of 15 (3112 views)

And what about a possible later upgrade to Ultegra R8000 (with a possibly new bike)?

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 2, 18 15:03

Post #4 of 15 (3101 views)

Get the new Dfour91 and R8000 chainrings to run with your current 6800 group, if you upgrade just move it from the current bike to the newer one.

Re: Need technical advice for Shimano + Quarq DFour [Art M.] [ In reply to ]

Jan 2, 18 15:05

Post #5 of 15 (3100 views)

Art M. wrote:

Get the new Dfour91 and R8000 chainrings to run with your current 6800 group, if you upgrade just move it from the current bike to the newer one.

So the R8000 Chainrings are compatible with the current Ultegra Derailleurs?

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 2, 18 15:12

Post #6 of 15 (3092 views)

Yes, they are.

Re: Need technical advice for Shimano + Quarq DFour [Art M.] [ In reply to ]

Jan 2, 18 15:17

Post #7 of 15 (3089 views)

Many thanks!

Re: Need technical advice for Shimano + Quarq DFour [Art M.] [ In reply to ]

Jan 2, 18 15:19

Post #8 of 15 (3085 views)

Would it also be "reverse compatible"? I mean using cranksets from 6800 with derailleurs of R8000?

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 2, 18 19:23

Post #9 of 15 (3033 views)

Just get the Shimano powermeter. It's cheaper and more reliable.

Re: Need technical advice for Shimano + Quarq DFour [Sausagetail] [ In reply to ]

Jan 2, 18 21:22

Post #10 of 15 (3014 views)

Sausagetail wrote:

Just get the Shimano powermeter. It's cheaper and more reliable.

Cheaper, really? You can get the dfour for $800, the adds I seen for the DA FC-9100-P are around $1800.

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 2, 18 21:23

Post #11 of 15 (3012 views)

Vanity wrote:

Would it also be "reverse compatible"? I mean using cranksets from 6800 with derailleurs of R8000?

Yes, that will work as well.

Re: Need technical advice for Shimano + Quarq DFour [Art M.] [ In reply to ]

Jan 3, 18 3:32

Post #12 of 15 (2968 views)

Shimano Powermeters are WAY more expensive...

Re: Need technical advice for Shimano + Quarq DFour [Art M.] [ In reply to ]

Jan 3, 18 11:24

Post #13 of 15 (2896 views)

$1200 and you get DA chainrings which are $2-300. And no need to change the BB. It's far superior to the Quarq, too.

Re: Need technical advice for Shimano + Quarq DFour [Vanity] [ In reply to ]

Jan 4, 18 2:24

Post #14 of 15 (2842 views)

And way too soon to talk about reliability. Not to mention Quarq is pretty good in that regard.

Re: Need technical advice for Shimano + Quarq DFour [Sausagetail] [ In reply to ]

Jan 4, 18 9:29

Post #15 of 15 (2795 views)

Sausagetail wrote:

$1200 and you get DA chainrings which are $2-300. And no need to change the BB. It's far superior to the Quarq, too.

Based on what?

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