Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the July Giveaway for VTUVIA SN100 Camouflage Fat Tire E-Bike $1679


Road cranks in 86mm bottom bracket
#1
I recently picked up a Bombtrack Hook EXT frameset and I'm looking to move my SRAM Red eTap groupset over to it. I've been reading about bottom bracket standards, but this is my first time building up a bike from the frameset. I knew the bottom bracket was T47, but I didn't realize it would be so wide, and I'm not worried that my Red 50/34 GXP crankset's spindle isn't long enough. My plan was to pick up a White Industries T47 BB, but I could use some help to make sure I'm moving in the right direction.

Frameset: http://bombtrack.com/framesets/hook-ext-frameset/

Crankset: https://www.competitivecyclist.com/sram-red-22-gxp-crankset

Bottom Bracket: http://www.whiteind.com/t47

Questions:


1. Will that crankset fit that frameset?
2. If that bottom bracket would work, should I get internal or external? My previous BB was external, but I think it was 73mm wide.

Thanks!
  Reply
#2
(08-21-2019, 08:24 AM)8F1EFD2553144920BDA6 Wrote:  I recently picked up a Bombtrack Hook EXT frameset and I'm looking to move my SRAM Red eTap groupset over to it. I've been reading about bottom bracket standards, but this is my first time building up a bike from the frameset. I knew the bottom bracket was T47, but I didn't realize it would be so wide, and I'm not worried that my Red 50/34 GXP crankset's spindle isn't long enough. My plan was to pick up a White Industries T47 BB, but I could use some help to make sure I'm moving in the right direction.

Frameset: http://bombtrack.com/framesets/hook-ext-frameset/

Crankset: https://www.competitivecyclist.com/sram-red-22-gxp-crankset

Bottom Bracket: http://www.whiteind.com/t47

Questions:


1. Will that crankset fit that frameset?
2. If that bottom bracket would work, should I get internal or external? My previous BB was external, but I think it was 73mm wide.

Thanks!

good luck with your first project! it's always nice to see new people joining the "bike builders club" Smile that's a smooth, beautiful frame to work with!

crankset looks good, but i'd suggest looking into Wheels manufacturing internal BBs for a better fit, just a personal opinion.

please, keep us updated with photos of your project, i'm excited to see how you will build around this sturdy frame.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
New Stator For My Ride1up Core 5
Yesterday 08:49 PM
Jumps a Gear
08-09-2022 07:14 PM
Rode my First Double Century in June
08-08-2022 11:42 PM
2022 road cycling season
08-08-2022 04:03 PM
Cycling photos while on holiday
08-08-2022 01:17 PM
Vairas vintage bicycle brand
08-08-2022 11:45 AM
New user
08-08-2022 11:38 AM
Harvest Rush Gravel Grinder! $1,000 cash...
08-08-2022 09:15 AM
Lock ring clearance
08-07-2022 09:42 PM
Why should I buy an e-bike?
08-07-2022 02:07 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Jesper
22 posts
no avatar 2. ichitan
21 posts
no avatar 3. ReapThaWhirlwind
18 posts
no avatar 4. JamesKim
11 posts
no avatar 5. dinh thaihoang
8 posts