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[Fot] mid-range versus later TR6 mainshaft question

To: "'triumph fot'" <fot@autox.team.net>
Subject: [Fot] mid-range versus later TR6 mainshaft question
From: "Bob Kramer" <rkramer3@austin.rr.com>
Date: Mon, 10 Oct 2016 11:26:28 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
Thread-index: AdIjEw1101525JatSLWSlJstZuo0ug==
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Friends 

 

I'm using an early 1973 overdrive mainshaft to build a close ratio box with
a J-type. The mainshaft was the type that used the earlier style washer
behind the 2nd gear bush with 3 keys locking it onto the splines of the
shaft, as opposed to the thicker washer with a ball bearing locking it on
the shaft on the later versions. I figured I could just drill an hole and
reuse the ball bearing but I am not having any success because the shaft is
too hard to drill. Has anyone else dealt with drilling this hole? If I grind
a flat spot on the shaft will it get me to softer steel so I can drill it?  

 

Bob


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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>Friends =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>I&#8217;m using an early 1973 overdrive mainshaft to =
build a close ratio box with a J-type. The mainshaft was the type that =
used the earlier style washer behind the 2<sup>nd</sup> gear bush with 3 =
keys locking it onto the splines of the shaft, as opposed to the thicker =
washer with a ball bearing locking it on the shaft on the later =
versions. I figured I could just drill an hole and reuse the ball =
bearing but I am not having any success because the shaft is too hard to =
drill. Has anyone else dealt with drilling this hole? If I grind a flat =
spot on the shaft will it get me to softer steel so I can drill it? =
&nbsp;<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Bob<o:p></o:p></p></div></body></html>
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