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[TR] modifying a reamer for carb shaft

Subject: [TR] modifying a reamer for carb shaft
From: greg at gelhar.com (Greg Gelhar)
Date: Wed, 16 Mar 2011 21:32:42 -0500
References: <937828.79527.qm@web65304.mail.ac2.yahoo.com>
The reamer will still be turned in the same direction. The difference is 
that you will want it to cut from the shank end of the flutes instead of 
from the normal end. To do this, the back end of the flutes must have a 
shape with a cutting angle put on them. The shank will pass through both 
bushing holes  to keep them aligned.

Greg Gelhar

----- Original Message ----- 
From: "Gary Nafziger" <nafzigerg at yahoo.com>
To: <triumphs at autox.team.net>
Sent: Wednesday, March 16, 2011 9:05 PM
Subject: [TR] modifying a reamer for carb shaft


> Randall sent a link to a good article concerning reaming your own carb for 
> new
> bushings for throttle shafts.
>
> One suggestion included grinding the cutting  edges of the flutes on the 
> reamer
> to make them work in reverse.  I'm not familiar enough with reamers.  How 
> simple
> is this?  I'm guessing that it involves grinding one side of the cutting 
> edge to
> make a "burr" on the other side of the cutting edge?
>
>
> Is the cutting edge of a reamer sharp and angled one direction (which 
> needs to
> be changed the other direction by grinding?)
> Or is the cutting edge of a reamer square with a little angle?
> It looks doable to me and hopefully I can start soon.
>
> gary n.


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