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drill/tap in frames



 
 
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  #131  
Old Today, 09:10 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Posts: 874
Default drill/tap in frames

The front and rear stays, which I suppose are
welded to the frame, and painted in the same
color - these are 2 inches wide.

The bottom stay, which is a long bracket with
the form of the letter "Z", only not as
steep, has two holes, one that goes into the
BB and one that goes into the chainguard.
This is the lowest contact point of the
chainguard. This bracket is 1-1/8
inches wide.


Or perhaps "thick" or "deep" is the word.
Anyway this is how much (little) material is
required for an M5 tap to work. Because that is
what it does. This is not an exotic bike but
the standard solution which I've seen hundred
of times.

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  #132  
Old Today, 09:22 AM posted to rec.bicycles.tech
Emanuel Berg[_2_]
external usenet poster
 
Posts: 874
Default drill/tap in frames

The front and rear stays, which I suppose are
welded to the frame, and painted in the same
color - these are 2 inches wide.

The bottom stay, which is a long bracket with
the form of the letter "Z", only not as
steep, has two holes, one that goes into the
BB and one that goes into the chainguard.
This is the lowest contact point of the
chainguard. This bracket is 1-1/8
inches wide.


OK, change the above into sixteenths of an inch
and it'll be correct as measured...

--
underground experts united
http://user.it.uu.se/~embe8573
 




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