I have a 2014 Cervelo P5-6 with Di2 and am looking to buy a QUARQ DZERO Carbon power meter but have no idea what specifications I need to select when trying to order one in regards to the BCD or spindle? Any help massively appreciated!!
Also any feedback on your thoughts on this power meter or alternatives? Basically I’ve gone for a crank based meter as I don’t want to move away from Shimano a pedal based meter would make me do.
Likely the DFour in BB30, spindle length is up to you and your fit. Most people have been gravitating towards compact, so I would say 170mm, if not smaller…
I have a P5-6 and a Quarq Dzero. I went with the GXP spindle, and a Wheels Mfg ceramic adapter bottom bracket. 30mm spindles, in my opinion, need to go away because the bottom brackets they utilize require far too much maintenance to stay creak free.
Thanks guys but this is all Chinese to me…hmmm going to have to do some googling
That aside happy with Quarq?
Thanks guys but this is all Chinese to me…hmmm going to have to do some googling
That aside happy with Quarq?
Your Cervelo uses a BBRight pressfit bottom bracket standard. Essentially this is a PF30 (pressfit 30mm) which is offset with added width on the non-drive side of the frame to widen bearing spacing to about 79mm from the PF30 standard 68mm BB width.
There are BB options for your Cervelo that allow for the use of either 30mm diameter (Quarq lists this as BB30 or EVO386 crank spindle) or 24mm diameter (Quarq/SRAM only offer GXP for 24mm) spindle options. You’ll need to pick one. The GXP option allows you the most flexibility in the future if you decide to move the Quarq to another bike. If you go with the GXP BB option you’ll have to get a BBRight-compatible conversion BB that steps the 30mm BB shell down for the 24mm GXP powermeter spindle such as the Wheels Manufacturing model mentioned by a previous poster. GXP actually uses a 24mm bearing on the NDS and 22mm on the DS, but you don’t need to worry about that detail.
You also have to pick which style of chainrings you want to use. If you want to use standard 5 bolt rings you’ll also have to pick either 110mm compact or 130mm standard bolt circle diameter and then chose whether you want the SRAM style ring with one bolt hidden (mounted) to the crankarm. Or you can go with the poster’s recommendation above and pick one of the Quarq Shimano ring compatible powermeter - DFour for 9000 DA style rings or DFour91 for 9100 DA rings. With the Shimano options there is just the one BCD that supports all their ring combinations.
You will need to pick carbon or aluminum crankarms. The aluminum option limits the available lengths.
Quarq doesn’t include chainrings or chainring bolts so you’ll need these for whichever option you select.
Thanks guys but this is all Chinese to me…hmmm going to have to do some googling
That aside happy with Quarq?
Your Cervelo uses a BBRight pressfit bottom bracket standard. Essentially this is a PF30 (pressfit 30mm) which is offset with added width on the non-drive side of the frame to widen bearing spacing to about 79mm from the PF30 standard 68mm BB width.
There are BB options for your Cervelo that allow for the use of either 30mm diameter (Quarq lists this as BB30 or EVO386 crank spindle) or 24mm diameter (Quarq/SRAM only offer GXP for 24mm) spindle options. You’ll need to pick one. The GXP option allows you the most flexibility in the future if you decide to move the Quarq to another bike. If you go with the GXP BB option you’ll have to get a BBRight-compatible conversion BB that steps the 30mm BB shell down for the 24mm GXP powermeter spindle such as the Wheels Manufacturing model mentioned by a previous poster. GXP actually uses a 24mm bearing on the NDS and 22mm on the DS, but you don’t need to worry about that detail.
You also have to pick which style of chainrings you want to use. If you want to use standard 5 bolt rings you’ll also have to pick either 110mm compact or 130mm standard bolt circle diameter and then chose whether you want the SRAM style ring with one bolt hidden (mounted) to the crankarm. Or you can go with the poster’s recommendation above and pick one of the Quarq Shimano ring compatible powermeter - DFour for 9000 DA style rings or DFour91 for 9100 DA rings. With the Shimano options there is just the one BCD that supports all their ring combinations.
You will need to pick carbon or aluminum crankarms. The aluminum option limits the available lengths.
Quarq doesn’t include chainrings or chainring bolts so you’ll need these for whichever option you select.
Wow what an awesome help!! Thank you so much for taking the time to give such a detailed explanation, I owe you a drink or 10!!
There are BB options for your Cervelo that allow for the use of either 30mm diameter (Quarq lists this as BB30 or EVO386 crank spindle) or 24mm diameter (Quarq/SRAM only offer GXP for 24mm) spindle options. You’ll need to pick one. The GXP option allows you the most flexibility in the future if you decide to move the Quarq to another bike. If you go with the GXP BB option you’ll have to get a BBRight-compatible conversion BB that steps the 30mm BB shell down for the 24mm GXP powermeter spindle such as the Wheels Manufacturing model mentioned by a previous poster. GXP actually uses a 24mm bearing on the NDS and 22mm on the DS, but you don’t need to worry about that detail.
Thank you SummitAK.
This was the exact question I was planning on posting. I have an S5 which I’m using as a TT bike for the interim, looking to get a Quarq PM to match my eTap groupset but was unsure whether to go EVO386 route or GXP + adapter. Looks like GXP is the better bet if I transfer it over to a non-BBright bike in the future.
Now, 110 or 130BCD is the next question…
For 110 vs 130, consider that there is a small change in lever arms with shorter cranks so if you usually run 170 and 53/39, a chance to 165 53/39 might take a bit more effort. I’ve never noticed the difference personally but others say they have. If you live anywhere with elevation changes, 110bcd with 52/36 and 11-28 or 11-30 cassette pairings is great. 52/36 and 11-30 is my jam.
Are there clearance limitations with larger chain ring (52, 54 or 55) on the SRAM 1x setup knowing that the chain ring sits closer to chain stay for improved chain line? I have a new P5-6 frame coming and also considering Dzero and assume it has the same offset for improved chain line but not sure (website says so). I want to run it in a 1x configuration.
Are there clearance limitations with larger chain ring (52, 54 or 55) on the SRAM 1x setup knowing that the chain ring sits closer to chain stay for improved chain line? I have a new P5-6 frame coming and also considering Dzero and assume it has the same offset for improved chain line but not sure (website says so). I want to run it in a 1x configuration.
Sorry I have no experience with 1x and associated chainline. Both DZeros in my house are 2x and went on Open U.P.s which have a 50t chainring limitation.
I’m not sure how closely Kiley is following ST these days, but he swapped out all his Quarqs to new DZero models and ran 1x on at least his 3T Exploro. Though that bike may also have a 50t chainring limit. You could drop him a PM.
I have a 2018 R5 that I believe has the same BB as your P2. It’s a BBright 79 mm shell. I already had a GXP Quarq Dzero, so all I had to do was get a BB from wheels manufacturing. Once I removed the stock BB, the installation of the new BB was super easy. No creaking at all so far.
I’m running a 52 with a dzero now with no issues. Thinking about getting a 54 and don’t forsee any issues with that either. I’m running it in a felt DA.