[Spridgets] Spridgets Digest, Vol 31, Issue 20

[Edward Perez]

So the bad flange and rear u-joint were replaced.  Front u-joint is solid.  I got her up to 55 or so before the rattling started. Much improved.
I can see I still need a little more tuning done on the carbs. I'll
pull the shaft to have it balanced. Maybe eliminate a little more of
the vibration. Still not sure if I'll install the 2 degree shims. I'll
try to get under and research the alignment angles to see if they are
parallel or what. Seems to be most apparent at 55 when I disengage the transmission and "coast."  For now, at least I can drive it around town. Not
freeway worthy yet, but close.  I want to drive it like I stole it!




________________________________
From: "corvallis at peoplepc.com" <corvallis at peoplepc.com>
To: spridgets at autox.team.net
Sent: Wed, December 9, 2009 12:10:07 PM
Subject: Re: [Spridgets] Spridgets Digest, Vol 31, Issue 20

I second the bulge in the tire, even new tires. You can jack up each corner
of the car and place a block of wood near the tread. Once around with the
wheel will show if there is any hint of a bulge.
Leave the six-pack until after you've finished. ...bill in oregon
=========================================================
-----Original Message-----
From: spridgets-bounces at autox.team.net
[mailto:spridgets-bounces at autox.team.net] On Behalf Of Bob Gardner
Sent: Wednesday, December 09, 2009 11:08 AM
To: spridgets at autox.team.net
Subject: Re: [Spridgets] Spridgets Digest, Vol 31, Issue 20

The vibration could be many things.  The first thing to do is to isolate
what is causing the shake.

Put in Neutral and rev engine, if no vib, jack up under dif and run through
gears and note if vibe still starts at 35 mph and still gets worse, then see
if it starts at a certain rpm in different gears. If it is always 35 mph no
matter which gear, the vibe is after tranny.  Then put one wheel on the
ground and make it vibrate.  Which gear and what rpm and what speed.  Then
do the other wheel on the ground.  That will tell you if one wheel is out of
balance or if it is the drive shaft or a bent wheel etc. If it is one wheel
more than the other, swap both rear with front wheels and try again. Any
difference?  

So far, you have spent nothing, drank a six pac and learned a lot. Some
times there is a slight bulge on a tire that you can hardly notice but will
make a good shake. If you can't make it vibrate with the above, then you
know it is in the front of the car and with the tires rotated, drive it and
see if it still shakes and if the shake is different.  You might also try to
put the spare on one front and then the other front and see if that changes
the vibration. 

By then, you are out of beer  and at least know where the vibration isn't
coming from.

Cheers,

Bob in San Diego


Robert D. Gardner

Gardner Productions LLC
Film and Video Production since 1978
619-460-1000
www.gardnerproductions.com
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