09-26-2014, 01:31 PM
Hello,
I just want to make the point that I am only 16 and a beginner. My situation is that I have bought a frame and fork from ebay to make into a single speed bike.
I have got into some trouble with identifying the bottom bracket but think that I may have chosen a suitable bottom bracket.
I don't know the model bike, only that it is a Raleigh that I think may be from the 80's. But I have little to go on.
The Bottom Bracket shell is 70mm. But this is the confusing part. I think the internal diameter is 34.5 mm (or around there). I have a bottom bracket cup - SM-BB70 - which fits the threading so I think the thread is 24tpi. However, I am a complete newbie and am open to any criticism. Please ask questions, and I will find any measurements you need.
Thanks
BTW, can anyone recommend a specific bottom bracket?
I thought that it may be a proprietary Raleigh bb but it doesn't fit the thread on Sheldon Brown .com?
I just want to make the point that I am only 16 and a beginner. My situation is that I have bought a frame and fork from ebay to make into a single speed bike.
I have got into some trouble with identifying the bottom bracket but think that I may have chosen a suitable bottom bracket.
I don't know the model bike, only that it is a Raleigh that I think may be from the 80's. But I have little to go on.
The Bottom Bracket shell is 70mm. But this is the confusing part. I think the internal diameter is 34.5 mm (or around there). I have a bottom bracket cup - SM-BB70 - which fits the threading so I think the thread is 24tpi. However, I am a complete newbie and am open to any criticism. Please ask questions, and I will find any measurements you need.
Thanks
BTW, can anyone recommend a specific bottom bracket?
I thought that it may be a proprietary Raleigh bb but it doesn't fit the thread on Sheldon Brown .com?