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I have not tried the two piece bushing kit, but I have about 3 brand new =
top hat bushings from various sources (probably the same original =
manufacturer) that do not have enough length (or is that width) to give =
the necessary gear clearances. I save them and retry them over and over =
again but usually just end up buying another new one. Same problem with =
some new countershaft thrust washers. I=E2=80=99ll never understand why =
they didn=E2=80=99t err a tad on the too thick side rather than too =
thin.
=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Steve Yott
Sent: Thursday, September 15, 2016 7:28 AM
To: Dan Forgey; triumph fot; Triumph List
Subject: Re: [Fot] TR4 Second Gear Bush (Top Hat)
=20
Dan,
I use this top hat replacement on all of the gearboxes that I overhaul. =
The idea is spot on but the execution is not. If you use these parts as =
is it is highly Iikely the main bush will eventually freeze on the =
shaft.
=20
The problem is with oil hole alignment and lack of oil holes. The =
oiling slot around the bushing does not line up with the oil holes in =
the gear. To resolve these issues I mount the bushing in a rotary table =
and using the mill I cut another oiling slot about .025 deep around the =
bushing in alignment with oil holes of the gear. I also mill 4 holes at =
90 degrees through the bushing at the position of the new slot to =
provide oil to the shaft. I do these operations with a very sharp 3/16 =
end mill.
=20
After this process you also need to hone the busing to fit both the =
shaft and the gear with about .0015 to .002 clearance.
=20
Takes time but this fix along with dual rear bearings in the lay gear =
(absolutely mandatory) will result in a long living gearbox.
=20
Steve Yott
=20
=20
=20
Sent via the Samsung Galaxy Tab E, an AT&T 4G LTE tablet
=20
-------- Original message --------
From: Dan Forgey <cofrog@q.com>=20
Date: 9/14/16 4:01 PM (GMT-06:00)=20
To: triumph fot <fot@autox.team.net>, Triumph List =
<triumphs@autox.team.net>=20
Subject: [Fot] TR4 Second Gear Bush (Top Hat)=20
=20
Listers, =20
=20
Has anyone had any experience with the 2 piece steel 2nd gear bushing =
for a TR4 from Moss? Part #848-575.
=20
How about the one piecesteel 2nd gear bushing from Revington RR? Also =
for a TR4.
=20
Any other input on the subject?
=20
Thanks,
=20
Dan forgey
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>I have not tried the two piece bushing kit, but I have about 3 brand =
new top hat bushings from various sources (probably the same original =
manufacturer) that do not have enough length (or is that width) to give =
the necessary gear clearances. I save them and retry them over and over =
again but usually just end up buying another new one. Same problem with =
some new countershaft thrust washers. I=E2=80=99ll never understand why =
they didn=E2=80=99t err a tad on the too thick side rather than too =
thin.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>Steve =
Yott<br><b>Sent:</b> Thursday, September 15, 2016 7:28 AM<br><b>To:</b> =
Dan Forgey; triumph fot; Triumph List<br><b>Subject:</b> Re: [Fot] TR4 =
Second Gear Bush (Top Hat)<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal>Dan,<o:p></o:p></p></div><div><p class=3DMsoNormal>I =
use this top hat replacement on all of the gearboxes that I overhaul. =
The idea is spot on but the execution is not. If you use =
these parts as is it is highly Iikely the main bush will eventually =
freeze on the shaft.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>The problem is with oil hole alignment and lack of oil =
holes. The oiling slot around the bushing does not line up with =
the oil holes in the gear. To resolve these issues I mount the =
bushing in a rotary table and using the mill I cut another oiling slot =
about .025 deep around the bushing in alignment with oil holes of the =
gear. I also mill 4 holes at 90 degrees through the bushing at the =
position of the new slot to provide oil to the shaft. I do these =
operations with a very sharp 3/16 end mill.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>After this process you also need to hone the busing to =
fit both the shaft and the gear with about .0015 to .002 =
clearance.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Takes time but this fix along with dual rear bearings =
in the lay gear (absolutely mandatory) will result in a long living =
gearbox.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Steve Yott<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div =
id=3D"composer_signature"><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;color:#575757'>Sent via the Samsung Galaxy Tab =
E, an AT&T 4G LTE tablet<o:p></o:p></span></p></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><div><p =
class=3DMsoNormal><span style=3D'color:black'>-------- Original message =
--------<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'>From: Dan Forgey <<a =
href=3D"mailto:cofrog@q.com";>cofrog@q.com</a>> =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'>Date: 9/14/16 4:01 PM (GMT-06:00) =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'>To: triumph fot <<a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>>, Triumph =
List <<a =
href=3D"mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a>> =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'>Subject: [Fot] TR4 Second Gear Bush (Top Hat) =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div></div><div><p =
class=3DMsoNormal><span style=3D'color:black'>Listers, =
<o:p></o:p></span></p><div><p class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'color:black'>Has anyone had any =
experience with the 2 piece steel 2nd gear bushing for a TR4 from Moss? =
Part #848-575.<o:p></o:p></span></p><div><p =
class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'color:black'>How about the one =
piecesteel 2nd gear bushing from Revington RR? Also for a =
TR4.<o:p></o:p></span></p></div></div><div><p class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'color:black'>Any other input on the =
subject?<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'color:black'>Thanks,<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'color:black'><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'color:black'>Dan =
forgey<o:p></o:p></span></p></div></div></div></body></html>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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