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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!
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Author Topic: BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!  (Read 2136 times)

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steve

  • Guest
Re: BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!
« Reply #25 on: February 01, 2008, 12:58 AM »
the reason why the bb ismt a standard size, is that it titanium tubeing
note, the smmooth bb i have came with the powerlite i buyed

note the bearings will be imperial, not metric
the spingle is.62 of an inch
15.90mm
-say 16mm
so you need to go 16mm to the id of the cups the bearings need to be as wide as the cups

note, a eurobb wont fit cos ti isnt available that size, or guage to cut a thread in
-us bb size either'

the cup is specufic to a stock size beasring to spindle - else it wouldn't be there - at that size i.d. :LolLolLolLol:

steve

  • Guest
Re: BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!
« Reply #26 on: February 01, 2008, 01:07 AM »
http://www.midlandbearings.com/6700.htm
the spindle is 5//8ths
15,87mm


steve

  • Guest
Re: BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!
« Reply #27 on: February 01, 2008, 01:12 AM »
http://www.midlandbearings.com/1600series.htm

probably 5.8ths to 1.3/8ths
#7/16ths widewide

bearing number 1623
« Last Edit: February 01, 2008, 01:14 AM by steve »

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  BOTTOM BRACKET HELP IT'S NOT EURO OR AMERICAN!
 

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