Thread: 1p crank
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  #5  
Old February 28th 18, 07:38 PM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default 1p crank

On 2/27/2018 11:47 PM, Emanuel Berg wrote:
AMuzi wrote:

Crank shown is different, being 28tpi.
The others are 24tpi.


Is this the same old English "Imperial" system?

24tpi = 24G Whitworth 55 deg?

Sure looks like that...

And yes, I counted the Taiwanese crank has
6 threads for 4/16" or 24tpi as you say.


No.
They are American SAE 60-degree thread.

p.s. You need a set of thread gauges:
http://toolguyd.com/blog/wp-content/...itch-Gauge.jpg

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


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