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Technical & Reference Section => Tech and Restoration => Topic started by: GT Two on October 19, 2017, 03:25 PM

Title: 3 piece bottom bracket conversion - square taper
Post by: GT Two on October 19, 2017, 03:25 PM
Hi Can anyone recommend a bottom bracket kit for a Mongoose Californian?

Many thanks

Lee
Title: Re: 3 piece bottom bracket conversion - square taper
Post by: Midschoolfool on October 19, 2017, 04:54 PM
So you have square taper arms yes? and you want to fit them to an American BB? do you have any BB at all? the spline?

Recently I did not want to pay "Old Skool BMX innit" prices for a nice 3pc so I bought this.

http://www.ebay.co.uk/itm/Onza-MTB-BMX-3-Piece-Crank-Set-170mm-New-Old-Stock-/152736124863?hash=item238fc84fbf:g:sokAAOSwJb5ZrqsW

For my 24" cruiser. You can get square taper Euro BB easy. Mine was also Euro. So I used this..

http://www.ebay.co.uk/itm/Truvativ-Bb-American-To-Euro-Bmx-Adapterblack-/152408713798?epid=1819992784&hash=item237c446a46:g:m9oAAOSw4DJYh3XU

And Bob's your Aunt's live in lover....

(https://i.imgur.com/CcBfcbP.jpg)
Title: Re: 3 piece bottom bracket conversion - square taper
Post by: Spen69 on October 19, 2017, 06:22 PM
Here you go Lee, a tenner plus three quid post for this open race one - keep it greased and adjusted it will be perfect for what you need.

http://www.ebay.co.uk/itm/Old-School-Bmx-3-Piece-Bottom-Bracket-Set-/112608892563?hash=item1a38035693:g:TlMAAOSwIJlZ6D8U

About £50 job done with my crank arms and chainring  :coolsmiley:
Title: Re: 3 piece bottom bracket conversion - square taper
Post by: That Swan Guy on October 19, 2017, 06:32 PM
The fact it's a Mongoose doesn't matter when buying parts. It isn't a different size to any other run of the mill 80s BMX with regard to parts and sizes. Just because the Mongoose OPC was 28tpi rather than 24tpi like most others it has no relevance to the size of bits that fit that bike.
Title: Re: 3 piece bottom bracket conversion - square taper
Post by: GT Two on October 19, 2017, 09:27 PM
Thanks All, I understand now!

 :daumenhoch:
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