Hi all, does anyone know the width of the T47 BB on Trek Domane SL6 etap 2022?
Just bought a size 52, and need to install my Rotor Aldhu crankset (With powermeter), which needs a new BB.
T47 bottom brackets are 68mm wide.
That frame is 85.5 mm wide. I’m assuming your Aldhu has a 30 mm axle if it’s the power meter version. This is the bottom bracket you want if you need to install a 30 mm Aldhu - https://www.trekbikes.com/us/en_US/equipment/cycling-components/bike-bottom-brackets/praxis-m30-t47-inboard-bottom-bracket/p/32003/?colorCode=black.
T47 bottom brackets are 68mm wide.
Depends if it’s an external or inboard T47. Trek went with inboard on the Domane, which should be 86.5 mm wide, but they weren’t happy with the minimal flange thickness for the install/removal tool to engage with on a standard T47 internal BB, so they went with their own “standard†with an 85.5 mm wide shell, allowing each flange to be 0.5mm thicker.
https://cyclingtips.com/...ded-bottom-brackets/
Does your Aldhu crankset have the 30mm spindle or the 24mm spindle? If it’s the 24, this BB would be the “Trek recommended “ BB:
https://www.trekbikes.com/...004/?colorCode=black
I don’t see a 30mm version in their catalog. That said, any T47 inboard BB for 30mm spindles can work, you’ll just be using most or all of the preload adjustment margin to snug the crank down on the 1mm narrower shell.
I see the M30 BB recommendation above. Wasn’t sure if the non-drive-side bearing was 30mm or not, since an M30 spindle steps down 2mm on the NDS (like a bigger GXP).
I had no idea that there was such a thing as a T47 internal bottom bracket. Thanks!
T47 bottom brackets are 68mm wide.
Depends if it’s an external or inboard T47. Trek went with inboard on the Domane, which should be 86.5 mm wide, but they weren’t happy with the minimal flange thickness for the install/removal tool to engage with on a standard T47 internal BB, so they went with their own “standard†with an 85.5 mm wide shell, allowing each flange to be 0.5mm thicker.
https://cyclingtips.com/...ded-bottom-brackets/
Does your Aldhu crankset have the 30mm spindle or the 24mm spindle? If it’s the 24, this BB would be the “Trek recommended “ BB:
https://www.trekbikes.com/...004/?colorCode=black
I don’t see a 30mm version in their catalog. That said, any T47 inboard BB for 30mm spindles can work, you’ll just be using most or all of the preload adjustment margin to snug the crank down on the 1mm narrower shell.
I see the M30 BB recommendation above. Wasn’t sure if the non-drive-side bearing was 30mm or not, since an M30 spindle steps down 2mm on the NDS (like a bigger GXP).
T47 and 85.5mm to give the cups a little more room!! This almost makes me want to add one on these new treks to the collection to show my appreciation for their bb choices.