You are right about that , Sheldon-- although dropping at the rear is no party either at 3000 rpm . I think driveshaft loops should be safety things---things that really matter , like dual masters . After several personal incidents with burst brake lines ( still a problem in 2026) ( anyone have a Dakota?) I once ,in my idealistic youth, wrote to NHTSA or whatever it is about requiring stainless lines . Maybe 20 years ago . Old cars end up with low income people --they end up hurt . I ended up crashed twice in my life with old cars due to burst lines . Could have been much worse. The day you really mash the brakes it bursts , pedal goes to floor . . I received a nicely written report from a clueless young woman ( with a degree!) saying " it cost too much " . I priced out 20 feet of each .", retail. ,0ne was 9$ and one was $ 16 ...I .sent it to her . Nothing back . I now realize gov't has no paddle at all, in all things . Only what lobbyists pay them off to do gets done . All big hats, no cattle . But we got the big rubber pads on the bumpers to save the insurance companies money . "It's the law" Imagine the lives saved with stainless lines? For 7$ ? Sent from my iPhone
The big advantage to the b&t joint is that it would be almost
impossible for the drive shaft to drop in the event of a failure.
I believe this is why they continued to use them in the front even
after they changed in the rear.
It would prevent an unfortunate 'pole-vaulting' event.
Sheldon
PA
On 4/9/2016 5:15 PM, 'Rich Barber'
c300@xxxxxxx [Chrysler300] wrote:
I
submit that the old U-joint design was great for
strength, but not so good in that the probability of
proper long-term maintenance, lubrication and
protection of the joint was low—leading to failure.
The old design required that the boot hold up forever
or be regularly inspected and promptly replaced (yes,
difficult) if ripped, split, torn or otherwise leaking
grease out and dirt and water in. The Spicer joints
used to have a grease fitting on them that would
facilitate periodically displacing old and aging
grease with fresh. But, we lubed the chassis and
U-joints every thousand miles or so. Failure to lube
the joint periodically led to really nasty failures.
I
had a hip joint replaced five years ago and my surgeon
told me that joint is surrounded by a muscular and
flexible capsule that holds synovial lubricating
fluid. This capsule is opened for the surgery and
sewed back up afterward so the Ti and HDPE joint will
also be lubricated. The original patent is pending
but it comes with a lifetime guarantee.
Rich
Barber
Rainy
Brentwood, CA
I have had the
original B&T joint in my C-300 for 115,000
miles. I rebuilt it the 70’s at 50,000 miles and
replaced a few pins and the buttons last year
before we drove it to Chicago and on to Oklahoma
on route 66. I think, taken care of they handle
much more than an L-head 6.
…Jack
IMG_6658 - Copy.JPG
From: Chrysler300@xxxxxxxxxxxxxxx
[mailto:Chrysler300@xxxxxxxxxxxxxxx]
On Behalf Of John Grady jkg@xxxxxxxxxxxxxxxxx
[Chrysler300]
Sent: Saturday, April 9, 2016 6:34 AM
To: William Leahy
Cc: Rob Kern; <Chrysler300@xxxxxxxxxxxxxxx>
Subject: Re: [Chrysler300] Smooth as Silk drive
shaft : )
I have done this .. Way to go .the old one is a
very poor design . Good only for flat six . That
is a great price . Maybe make some deal w club
--send our shafts there . Even with 100$ ship if
they are good and do it well it is a great deal .
Too many duffers will ruin shaft . You need to be
skilled to do perfectly , have right equipment .
Nice find Rob .
The flanged Fitting for a modern joint is used on
Winnebago motor homes , not an uncommon part .
Sent from my iPhone
On Apr 9, 2016, at 12:14 AM, William Leahy bleahy@xxxxxxxxxxx
[Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx>
wrote:
I need to address this / thankx, Bill Leahy in
summer like Kennewick, Washington
Sent from my iPad
On Apr 8, 2016, at 7:47 PM, "'Rob Kern' robkern@xxxxxxxxxxxxx
[Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>
wrote:
Hello 300’ly to all!
I just replaced the front ball and trunion u-joint
assembly on my C with the upgrade of the slip
assembly more modern front u-joint and I must say
that I could not be more pleased. The car runs as
smooth as silk and is quieter. It almost feels
like the vehicle is at peace with itself! I had
tremors develop between 30 and 40 mph upon easy
acceleration and again when accelerating above
60mph. The front U-joint had 1/16th inch play. The
grease retention boot was replaced a month ago
when discovered that it left the party who knows
how long ago. The new u-joint was installed to the
front of the driveshaft which was balanced with
the rear u-joint in place and then installed.
Precision Drive Shaft in Oklahoma City did all the
work and obtained all the parts . 3 day turn
around time. $298.00. Many thanks to Club members
Mike Burke, George McKovich, Larry Jett, Murray
Park and Jeff Carter for discussing the upgrade
and helping me decide to go this route! Rob Kern
[Non-text portions of this message have been
removed]
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Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx>
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