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US BMX BB to BSA bottom bracket adapter eccentric (68mm wide)

US BMX BB to BSA bottom bracket adapter eccentric (68mm wide)

thingiverse

Eccentric US BMX bottom bracket (2") to BSA bottom bracket (34mm) adapter for allowing mid-drive eBike-kits. THESE PLANS ARE MEANT FOR CNC-MACHINING METAL DO NOT USE ANY FORM OF PLASTIC IN BOTTOM BRACKETS, IT IS A LOAD BEARING POINT. Measured for 68mm wide bottom bracket, using M6X60 hex-screws (DIN 912). Right side has 5mm holes and they have to be threaded for M6

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