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I love this group. Great stuff.=20
Greg
Sent from my iPhone
> On Mar 3, 2016, at 9:16 PM, Richard Good <goodparts@verizon.net> wrote:
>=20
> A straight line drawn through the transmission output shaft should be clos=
e to parallel to a line through the diff pinion shaft. It is OK if the driv=
eshaft is not parallel to these lines. So if the rear of the trans is tilte=
d down 6.5 degrees then lets say the driveshaft is level, the front U-joint o=
perating at a 6.5 deg angle will cause the driveshaft to speed up and slow d=
own as it rotates. If the nose of the diff is tilted up at the same 6.5 deg=
, these velocity oscillations will be cancelled out by the rear U-joint and t=
he diff pinion will rotate smoothly.
> =20
> When you say the diff is tilted downward at 5.5 degrees do you mean that t=
he nose is pointed down? This would be a bad situation as the oscillations o=
f the driveshaft would be exaggerated rather than cancelled by the rear U-jo=
int and you would have nasty vibration. Hopefully your diff nose is pointed=
upward 5.5 deg. This would place the imaginary lines within 1 degree of pa=
rallel and close enough for smooth operation.
> =20
> Richard Good
>=20
> From: damys@charter.net
> Sent: Thursday, March 03, 2016 8:44 PM
> To: 'fot@autox.team.net'
> Subject: [Fot] Driveshaft angles on 1970 GT6
>=20
> Need a bit of advice regarding driveshaft angles. The rear transmission f=
lange is tilted downward 6 1/2 degrees. The diff is tilted downward at 5 1/=
2 degrees. The difference is 12 degrees. Is this too much for a universal j=
oint setup to manage? We've considered raising the front of the diff, but t=
hen the spring will be twisted and we don't know how this will affect the re=
ar suspension. Any help is appreciated.
>=20
>=20
>=20
> Dave and Alex
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/gblake58tr3@=
icloud.com
>=20
>=20
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<html><head><meta http-equiv="content-type" content="text/html;
charset=utf-8"></head><body dir="auto"><div>I love this group. Great
stuff. </div><div id="AppleMailSignature"><br></div><div
id="AppleMailSignature">Greg<br><br>Sent from my iPhone</div><div><br>On Mar 3,
2016, at 9:16 PM, Richard Good <<a
href="mailto:goodparts@verizon.net";>goodparts@verizon.net</a>>
wrote:<br><br></div><blockquote type="cite"><div>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta name="GENERATOR" content="MSHTML 11.00.10586.122">
<div><font face="Calibri">A straight line drawn through the transmission output
shaft should be close to parallel to a line through the diff pinion
shaft.
It is OK if the driveshaft is not parallel to these lines. So if the rear
of the trans is tilted down 6.5 degrees then lets say the driveshaft is level,
the front U-joint operating at a 6.5 deg angle will cause the driveshaft to
speed up and slow down as it rotates. If the nose of the diff is tilted
up
at the same 6.5 deg, these velocity oscillations will be cancelled out by the
rear U-joint and the diff pinion will rotate smoothly.</font></div>
<div><font face="Calibri"></font> </div>
<div><font face="Calibri">When you say the diff is tilted downward at 5.5
degrees
do you mean that the nose is pointed down? This would be a bad situation
as the oscillations of the driveshaft would be exaggerated rather than
cancelled
by the rear U-joint and you would have nasty vibration. Hopefully your
diff nose is pointed upward 5.5 deg. This would place the imaginary lines
within 1 degree of parallel and close enough for smooth operation.</font></div>
<div><font face="Calibri"></font> </div>
<div><font face="Calibri">Richard Good</font></div>
<div style="FONT: 10pt Tahoma">
<div><br></div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a title="mailto:damys@charter.net
CTRL + Click to follow link"
href="mailto:damys@charter.net";>damys@charter.net</a> </div>
<div><b>Sent:</b> Thursday, March 03, 2016 8:44 PM</div>
<div><b>To:</b> <a title="fot@autox.team.net"
href="mailto:'fot@autox.team.net'">'fot@autox.team.net'</a> </div>
<div><b>Subject:</b> [Fot] Driveshaft angles on 1970 GT6</div></div></div>
<div><br></div>
<p>Need a bit of advice regarding driveshaft angles. The rear
transmission
flange is tilted downward 6 1/2 degrees. The diff is tilted downward at 5
1/2 degrees. The difference is 12 degrees. Is this too much for a
universal joint setup to manage? We've considered raising the front of
the
diff, but then the spring will be twisted and we don't know how this will
affect
the rear suspension. Any help is appreciated.</p>
<p><br></p>
<p>Dave and Alex</p>
<p>
</p><hr>
<p></p>
</div></blockquote><blockquote
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