Bike Forums - View Single Post - Is there a bottom bracket cartridge that will work?

10-09-18, 06:54 PM

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mmcc73

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Quote:

Originally Posted by Narhay

Is it a double or triple? You can measure the bolt circle diameter to determine if it is 110 or 144.

For a double, 3p would need a 122mm modern symmetrical bottom bracket, 3s would need a 127mm. Old spindles were shorter on the non drive side (asymmetrical). If you have a triple it very well may be a 3U and a 133 symmetrical bottom bracket.

https://www.sheldonbrown.com/bbsize.html

BB Length (110 BCD) = "3P"
BB Length (144 BCD) = "3S"

VeloBase.com - Component: Sakae/Ringyo (SR) SA

Thanks for the info!

It is a double, and 110 BCD.

So even though the existing spindle in asymmetrical and has an overall length of 124.5mm (as measured with my lovely yellow plastic calipers) I can use a symmetrical bottom bracket with a 122mm spindle?

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