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Technical & Reference Section => Tech and Restoration => Topic started by: thesku11s on September 11, 2009, 11:35 AM

Title: How many bearings in a bottom bracket?
Post by: thesku11s on September 11, 2009, 11:35 AM

Im fixing up a little bike with a non-standard BB shell so I have to do the bearings loose ball.

Its being a right pain, all the bearing keep falling out! I know the balls are the right size though (8mm)

I was just wondering, with a one piece crank what is the general rule for packing BB's

Are you supposed to leave a gap? Or fill it up completely?

Thanks in advance.  :daumenhoch:

Title: Re: How many bearings in a bottom bracket?
Post by: moley on September 11, 2009, 11:41 AM

It will be full but with a gap.

The balls have to move so packing  an extra ball in would be too tight!!

So there should be around 1/2 a balls width gap or so!!

If you fill it will balls and there isn't a gap then you have too many!!

Title: Re: How many bearings in a bottom bracket?
Post by: bobafett on September 11, 2009, 01:09 PM

Quote from: moley on September 11, 2009, 11:41 AM

It will be full but with a gap.

The balls have to move so packing  an extra ball in would be too tight!!

So there should be around 1/2 a balls width gap or so!!

If you fill it will balls and there isn't a gap then you have too many!!

 :shocked:

Reads like a post for a different type of forum that does moley  :shocked: :-X :bondage:

 :LolLolLolLol:

Title: Re: How many bearings in a bottom bracket?
Post by: moley on September 11, 2009, 01:25 PM

I thought that when I was typing it.  :LolLolLolLol:

So I left it as it was!!  :daumenhoch:

Title: Re: How many bearings in a bottom bracket?
Post by: bobafett on September 11, 2009, 01:46 PM

 :daumenhoch: :LolLolLolLol: