TJ Vibration: rear axle bent?
11-11-2006, 04:40 PM
#11
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The thing that's interesting about this is it doesn't show up when I do
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
11-11-2006, 04:40 PM
#12
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The thing that's interesting about this is it doesn't show up when I do
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
11-11-2006, 04:40 PM
#13
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The thing that's interesting about this is it doesn't show up when I do
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
that. It's technically straight -- but there's a bend in the middle.
The tire doesn't wobble, but you definitely can see it in the axle
itself once it's out of the tube and slowly rolled. (I put it on my
workbench and rolled it, and it bobs up and down).
Now I just have to find someone local with a hydraulic press. :)
Mike Romain wrote:
> Wow.... That's a lot of work to find a bent axle...
>
> That should show up in the wheel if you jack it up and spin it, more
> than enough to vibrate.
11-11-2006, 05:03 PM
#14
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The axle forging could be bent, but if the ends have been machined straight,
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
11-11-2006, 05:03 PM
#15
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The axle forging could be bent, but if the ends have been machined straight,
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
11-11-2006, 05:03 PM
#16
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
The axle forging could be bent, but if the ends have been machined straight,
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
you wouldn't have a problem. I don't think I've ever seen one like you
describe though.
Earle
"Justin M" <xtexatl@gmail.com> wrote in message
news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> The thing that's interesting about this is it doesn't show up when I do
> that. It's technically straight -- but there's a bend in the middle.
> The tire doesn't wobble, but you definitely can see it in the axle
> itself once it's out of the tube and slowly rolled. (I put it on my
> workbench and rolled it, and it bobs up and down).
>
> Now I just have to find someone local with a hydraulic press. :)
>
>
> Mike Romain wrote:
> > Wow.... That's a lot of work to find a bent axle...
> >
> > That should show up in the wheel if you jack it up and spin it, more
> > than enough to vibrate.
>
--
Posted via a free Usenet account from http://www.teranews.com
11-11-2006, 05:06 PM
#17
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
>It's technically straight -- but there's a bend in the middle.
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
11-11-2006, 05:06 PM
#18
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
>It's technically straight -- but there's a bend in the middle.
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
11-11-2006, 05:06 PM
#19
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
>It's technically straight -- but there's a bend in the middle.
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
Hi Justin,
You need to have the axle checked to see if the two ends run true to
each other. It is possible that the ends run true but the middle runs out.
We see this all the time in our machine shop. We take a slightly bent piece
of shafting, put it up on centers in a lathe, and turn the ends true to each
other but the middle will still run out. If it turns slowly in it's
application, it's fine. If it spins fast, well, that's another story. If
you have a shop locally, they should be able to put it in a lathe and
indicate the axle to see what is really running out. If the wheel doesn't
run out and wobble, I would look for something else like tire balance (it
has been rebalanced?) or a worn suspension part. Just my two cents.
Les
'01 TJ
11-11-2006, 06:51 PM
#20
Guest
Posts: n/a
Re: TJ Vibration: rear axle bent?
I have. Steve Seppala from this group did it to his YJ. There was
runout on Steve's. I'll bet there is a slight runout on his too which
could be the vibration. Even just the shaft bend could set up a
harmonic at a certain rpm.
Mike
Earle Horton wrote:
>
> The axle forging could be bent, but if the ends have been machined straight,
> you wouldn't have a problem. I don't think I've ever seen one like you
> describe though.
>
> Earle
>
> "Justin M" <xtexatl@gmail.com> wrote in message
> news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> > The thing that's interesting about this is it doesn't show up when I do
> > that. It's technically straight -- but there's a bend in the middle.
> > The tire doesn't wobble, but you definitely can see it in the axle
> > itself once it's out of the tube and slowly rolled. (I put it on my
> > workbench and rolled it, and it bobs up and down).
> >
> > Now I just have to find someone local with a hydraulic press. :)
> >
> >
> > Mike Romain wrote:
> > > Wow.... That's a lot of work to find a bent axle...
> > >
> > > That should show up in the wheel if you jack it up and spin it, more
> > > than enough to vibrate.
> >
>
> --
> Posted via a free Usenet account from http://www.teranews.com
runout on Steve's. I'll bet there is a slight runout on his too which
could be the vibration. Even just the shaft bend could set up a
harmonic at a certain rpm.
Mike
Earle Horton wrote:
>
> The axle forging could be bent, but if the ends have been machined straight,
> you wouldn't have a problem. I don't think I've ever seen one like you
> describe though.
>
> Earle
>
> "Justin M" <xtexatl@gmail.com> wrote in message
> news:1163281207.917447.180920@b28g2000cwb.googlegr oups.com...
> > The thing that's interesting about this is it doesn't show up when I do
> > that. It's technically straight -- but there's a bend in the middle.
> > The tire doesn't wobble, but you definitely can see it in the axle
> > itself once it's out of the tube and slowly rolled. (I put it on my
> > workbench and rolled it, and it bobs up and down).
> >
> > Now I just have to find someone local with a hydraulic press. :)
> >
> >
> > Mike Romain wrote:
> > > Wow.... That's a lot of work to find a bent axle...
> > >
> > > That should show up in the wheel if you jack it up and spin it, more
> > > than enough to vibrate.
> >
>
> --
> Posted via a free Usenet account from http://www.teranews.com