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Very right.
The flanges of gearbox and diff needs to be parallel or vibration will =
occur.
There is a god video about this:
https://www.youtube.com/watch?v=3DgmV4qwLfOMY
=20
Cheers
Chris
=20
Von: Fot [mailto:fot-bounces@autox.team.net] Im Auftrag von Richard Good
Gesendet: Freitag, 4. M=C3=A4rz 2016 04:17
An: damys@charter.net; fot@autox.team.net
Betreff: Re: [Fot] Driveshaft angles on 1970 GT6
=20
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.
=20
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.
=20
Richard Good
=20
From: damys@charter.net=20
Sent: Thursday, March 03, 2016 8:44 PM
To: 'fot@autox.team.net'=20
Subject: [Fot] Driveshaft angles on 1970 GT6
=20
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.
=20
Dave and Alex
_____ =20
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</o:shapelayout></xml><![endif]--></head><body lang=3DDE link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Very right.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>The flanges of gearbox and diff needs to be parallel or vibration =
will occur.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>There is a god video about this:<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><a =
href=3D"https://www.youtube.com/watch?v=3DgmV4qwLfOMY";>https://www.youtub=
e.com/watch?v=3DgmV4qwLfOMY</a><o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Cheers<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Chris<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","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 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span><=
/b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>Im Auftrag von </b>Richard =
Good<br><b>Gesendet:</b> Freitag, 4. M=C3=A4rz 2016 04:17<br><b>An:</b> =
damys@charter.net; fot@autox.team.net<br><b>Betreff:</b> Re: [Fot] =
Driveshaft angles on 1970 GT6<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif"'>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.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif"'>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.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Calibri","sans-serif"'>Richard =
Good</span><o:p></o:p></p></div><div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> <=
/o:p></span></p></div><div><div><p class=3DMsoNormal =
style=3D'background:whitesmoke'><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"'> =
<a href=3D"mailto:damys@charter.net"; =
title=3D"mailto:damys@charter.net CTRL + Click to follow =
link">damys@charter.net</a> <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal style=3D'background:whitesmoke'><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Sent:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Thursday, March 03, 2016 8:44 PM<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal style=3D'background:whitesmoke'><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To:</span></=
b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a =
href=3D"mailto:'fot@autox.team.net'" =
title=3D"fot@autox.team.net">'fot@autox.team.net'</a> =
<o:p></o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:whitesmoke'><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Subject:</sp=
an></b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> [Fot] =
Driveshaft angles on 1970 =
GT6<o:p></o:p></span></p></div></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></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.<o:p></o:p></p><p><o:p> </o:p></p><p>Dave and =
Alex<o:p></o:p></p><div class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center'><hr size=3D2 width=3D"100%" =
align=3Dcenter></div></div></body></html>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
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