The T47 threaded bottom bracket is preferred over press-fit for its ease of installation, large hollow design aiding cable routing, and reliable performance after thousands of miles, though occasional creaking from dry bearings and minor dirt ingress are noted.
Pros
- Avoids common press-fit issues like squeaking and hassle
- Large hollow design facilitates internal cable routing
- Allows finger access inside for cable management
- Spins freely with no resistance
Cons
- Had a creak due to dry bearings a few months ago
- Some dirt and water ingress inside the bottom bracket shell
Key Facts
- T47 screwfit design with 68mm/73mm/86.5mm and BSA 68mm/73mm options
- Large hollow aperture allows finger access for internal cable routing
- Used on a gravel bike built with AliExpress parts
Reviews & Ratings
The reviewer discusses the T47 screwfit bottom bracket in the context of their gravel bike build. They express satisfaction with this choice over press-fit bottom brackets, which they mention are prone to squeaking and generally problematic based on forum discussions. The T47 bottom bracket is described as having a massive aperture that facilitates cable routing through the frame. The reviewer also notes that the bottom bracket shell is hollow and large enough to allow finger access inside for cable management purposes.
AI Summary
Pros
- Avoids the common issues of press-fit bottom brackets (squeaking, hassle)
- Large hollow design facilitates internal cable routing
- Allows finger access inside for cable management
Key Points
- T47 screwfit bottom bracket
- Preferable to press-fit BBs
- Large hollow design aids cable routing
- Massive aperture allows internal access
The reviewer mentions that the bottom bracket had a slight creak a few months ago due to dry bearings, which was resolved by cleaning and regreasing. After thousands of miles in various conditions, the bottom bracket spins freely with no resistance, though some dirt and water ingress were noted inside the shell.
AI Summary
Pros
- Spins freely with no resistance
- No creaking after regreasing
- Performed well over thousands of miles in varied conditions
Cons
- Had a creak due to dry bearings a few months ago
- Some dirt and water ingress inside the bottom bracket shell
Key Points
- Bottom bracket type: T47 thread, 68mm/73mm/86.5mm, BSA 68mm/73mm
- Used on a gravel bike built with AliExpress parts
- Reviewed after a few thousand miles including wet and dirty rides
Where to Buy
Bicycle Bottom Bracket Ceramic Bearing BB T47 Thread 68mm 73mm 86.5mm Bsa 68mm 73mm for Mountain Road Bike Central Movement DUB
Bicycle Bottom Bracket Ceramic Bearing BB T47 Thread 68mm 73mm 86.5mm Bsa 68mm 73mm for Mountain Road Bike Central Movement DUB - AliExpress 18
Questions about Bicycle Bottom Bracket Ceramic Bearing BB T47 Thread 68mm 73mm 86.5mm Bsa 68mm 73mm for Mountain Road Bike Central Movement DUB
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