Callie Williams on mon 12 jul 10
Hi All, I bought a used kickwheel. I got a really good deal, so I didn't
mess with it too much before buying it. I'm having trouble with what I
perceive to be an unacceptable wobble. The wheel head seems to no be leve=
=3D
l.
I replaced the head and that did not really fix it. My neighbor and I too=
=3D
k
the whole thing apart and it seems all the parts are true and the bearing=
=3D
s
are fine. I'm at a total loss for what it might be. One thing that concer=
=3D
ns
me is that there is concrete missing from the bottom of the flywheel.
Several people have said that that wouldn't cause the wobble. Any thought=
=3D
s
would be appreciated. Thanks
Tom King on tue 13 jul 10
Hi Callie,
Own an EJ and love it for many reasons.
Careful of those foot rests. Learned to have much respect.
Only two possible causes:
Shaft is bent, (and this would get my money)
or
Collar on the bottom of the head is not perfectly perpendicular
with the surface of the head. (The replacement is also bad.)
Google the Amaco /Brent people and call them.
They are good people that stand behind what they sell.
They cannot warrant something that you bought used,
but they will be glad to help.
Good luck,
Tom king
----- Original Message -----
From: "Callie Williams"
To:
Sent: Monday, July 12, 2010 2:53 PM
Subject: Brent EJ Kickwheel Problem
Hi All, I bought a used kickwheel. I got a really good deal, so I didn't
mess with it too much before buying it. I'm having trouble with what I
perceive to be an unacceptable wobble. The wheel head seems to no be level.
I replaced the head and that did not really fix it. My neighbor and I took
the whole thing apart and it seems all the parts are true and the bearings
are fine. I'm at a total loss for what it might be. One thing that concerns
me is that there is concrete missing from the bottom of the flywheel.
Several people have said that wouldn't cause the wobble. Any thoughts
would be appreciated. Thanks
Eric Hansen on tue 13 jul 10
it will
a wheel has to be balanced just like car tires to spin freely
h a n s e n
On Mon, Jul 12, 2010 at 3:53 PM, Callie Williams wrot=
e:
> Hi All, I bought a used kickwheel. I got a really good deal, so I didn't
> mess with it too much before buying it. I'm having trouble with what I
> perceive to be an unacceptable wobble. The wheel head seems to no be leve=
l.
> I replaced the head and that did not really fix it. My neighbor and I too=
k
> the whole thing apart and it seems all the parts are true and the bearing=
s
> are fine. I'm at a total loss for what it might be. One thing that concer=
ns
> me is that there is concrete missing from the bottom of the flywheel.
> Several people have said that that wouldn't cause the wobble. Any thought=
s
> would be appreciated. Thanks
>
--
Eric Alan Hansen
Stonehouse Studio Pottery
Alexandria, Virginia
americanpotter.blogspot.com
thesuddenschool.blogspot.com
hansencookbook.blogspot.com
"To me, human life in all its forms, individual and aggregate, is a
perpetual wonder: the flora of the earth and sea is full of beauty and of
mystery which seeks science to understand; the fauna of land and ocean is
not less wonderful; the world which holds them both, and the great universe
that folds it in on everyside, are still more wonderful, complex, and
attractive to the contemplating mind." - Theodore Parker, minister,
transcendentalist, abolitionist (1810-1860)
Michael McDowell on tue 13 jul 10
Callie,
It sounds as if your problem is that the wheel head is not running true. If
this is a cast aluminum wheel head, as most are, I have a suggestion based
on how I saw Bob Lutweiler, (the originator of the Pacifica Wheel) deal wit=
h
such a problem. Bob had several wheels arrayed in front of him one day when
I visited his shop in Ferndale, WA. Each of them had a slight wobble in the
wheelhead. He was attacking the problem with a felt pen and a hard rubber
mallet.
Steadying his grip on the felt pen as a wheel rotated beneath it, he lowere=
d
the pen until it just touched at the high point on the wide edge of the
wheel. Then he hit the wheelhead firmly with the rubber mallet right where
the pen had marked it. He kept at this until the pen finally touched down
all the way round at the same time. He told me that a high percentage of hi=
s
wheels required this bit of "fine tuning" before shipping them out to
customers...
You might try it,
Michael McDowell
Whatcom County, WA, USA
michael@mcdowellpottery.com
http://www.McDowellPottery.com
Callie Williams on tue 13 jul 10
We checked the shaft. We rolled it on my DH's table saw and it was straight=
=3D
. I'm leaning towards the flywheel as some other clayarters think that's w=
=3D
hat it is. They were so brief=3D2C at least I think that's what they were g=
et=3D
ting at. As for Amaco=3D2C I called them twice and that's how I ended up wi=
th=3D
the new head. They were great though. Very willing to help.
I was thinking I would solve the flywheel problem=3D2C by adding my own con=
cr=3D
ete. I'll let you know how it works.
By the way those foot rests are murder! We have them at the studio on campu=
=3D
s and I've barked my shins a number of times. Here at home I have room to g=
=3D
et around them.
> Date: Tue=3D2C 13 Jul 2010 09:22:01 -0500
> From: tomandestherking@ATT.NET
> Subject: Re: Brent EJ Kickwheel Problem
> To: Clayart@LSV.CERAMICS.ORG
>=3D20
> Hi Callie=3D2C
>=3D20
> Own an EJ and love it for many reasons.
> Careful of those foot rests. Learned to have much respect.
>=3D20
> Only two possible causes:
>=3D20
> Shaft is bent=3D2C (and this would get my money)
> or
> Collar on the bottom of the head is not perfectly perpendicular
> with the surface of the head. (The replacement is also bad.)
>=3D20
> Google the Amaco /Brent people and call them.
> They are good people that stand behind what they sell.
> They cannot warrant something that you bought used=3D2C
> but they will be glad to help.
>=3D20
> Good luck=3D2C
>=3D20
> Tom king
> ----- Original Message -----
> From: "Callie Williams"
> To:
> Sent: Monday=3D2C July 12=3D2C 2010 2:53 PM
> Subject: Brent EJ Kickwheel Problem
>=3D20
>=3D20
> Hi All=3D2C I bought a used kickwheel. I got a really good deal=3D2C so I=
did=3D
n't
> mess with it too much before buying it. I'm having trouble with what I
> perceive to be an unacceptable wobble. The wheel head seems to not be lev=
=3D
el.
> I replaced the head and that did not really fix it. My neighbor and I too=
=3D
k
> the whole thing apart and it seems all the parts are true and the bearing=
=3D
s
> are fine. I'm at a total loss for what it might be. One thing that concer=
=3D
ns
> me is that there is concrete missing from the bottom of the flywheel.
> Several people have said that wouldn't cause the wobble. Any thoughts
> would be appreciated. Thanks
=3D20
_________________________________________________________________
The New Busy is not the old busy. Search=3D2C chat and e-mail from your inb=
ox=3D
.
http://www.windowslive.com/campaign/thenewbusy?ocid=3D3DPID28326::T:WLMTAGL=
:O=3D
N:WL:en-US:WM_HMP:042010_3=3D
Tom King on tue 13 jul 10
Callie,
This is not a subjective issue. Mechanics.
I would never argue that having a poorly
balanced wheel (for any reason) would not throw off the wheel.
The degree of imbalance would have to be severe, and then the
center of gravity of the whole wheel would be off. (You could
feel the whole unit move side to side, (front and back) or whatever.
Many wheels in the world have flywheels that are waaaayyyy off
being perfectly balanced. They work fine.
If the head wobbles it can only be one of the two options that I
have suggested. I am not being belligerent...Mechanics.
If we are talking wobbles as in ...outer edge of wheelhead
moves up and down... Please check that shaft again, carefully.
Try another wheelhead if someone near you has one with the
same shaft diameter.
Course, patching the concrete flywheel is a good thing to do.
Let us know,
Tom
Callie Williams wrote
We checked the shaft. We rolled it on my DH's table saw and it was straight=
.
I'm leaning towards the flywheel as some other clayarters think that's what
it is. They were so brief, at least I think that's what they were getting
at. As for Amaco, I called them twice and that's how I ended up with the ne=
w
head. They were great though. Very willing to help.
I was thinking I would solve the flywheel problem, by adding my own
concrete. I'll let you know how it works.
By the way those foot rests are murder! We have them at the studio on campu=
s
and I've barked my shins a number of times. Here at home I have room to get
around them.
Tom wrote
>
> Hi Callie,
>
> Own an EJ and love it for many reasons.
> Careful of those foot rests. Learned to have much respect.
>
> Only two possible causes:
>
> Shaft is bent, (and this would get my money)
> or
> Collar on the bottom of the head is not perfectly perpendicular
> with the surface of the head. (The replacement is also bad.)
>
> Google the Amaco /Brent people and call them.
> They are good people that stand behind what they sell.
> They cannot warrant something that you bought used,
> but they will be glad to help.
>
> Good luck,
>
> Tom king
> ----- Original Message -----
> From: "Callie Williams"
> To:
> Sent: Monday, July 12, 2010 2:53 PM
> Subject: Brent EJ Kickwheel Problem
>
>
> Hi All, I bought a used kickwheel. I got a really good deal, so I didn't
> mess with it too much before buying it. I'm having trouble with what I
> perceive to be an unacceptable wobble. The wheel head seems to not be
> level.
> I replaced the head and that did not really fix it. My neighbor and I too=
k
> the whole thing apart and it seems all the parts are true and the bearing=
s
> are fine. I'm at a total loss for what it might be. One thing that
> concerns
> me is that there is concrete missing from the bottom of the flywheel.
> Several people have said that wouldn't cause the wobble. Any thoughts
> would be appreciated. Thanks
_________________________________________________________________
The New Busy is not the old busy. Search, chat and e-mail from your inbox.
http://www.windowslive.com/campaign/thenewbusy?ocid=3DPID28326::T:WLMTAGL:O=
N:WL:en-US:WM_HMP:042010_3=3D
Louis Katz on tue 13 jul 10
Wobbles and Wobbles.
Edge of wheel head moves up and down. Test at a low speed with a finger o=
=3D
r
pintool held still at the outside edge.
Cause: Bent Shaft of wheel head.
Cure: Replace bad part or very carefuly level the wheel using the shaft a=
=3D
s a
reference and cast a new head ontop of the old head using gravity to leve=
=3D
l it.=3D20
Or case a new head on top of the old one and trim or "machine" it flat in=
=3D
place.
Whole wheel moves at high speed, outside edge of wheel head does not move=
=3D
.
Cause excentric flywheel, defective bearing or bent shaft.
Cure: Balance flywheel or other offending part.
If the flywheel lost a section of concrete through an accident it could b=
=3D
e
the cause of the wobble,
I had a fight with this early in my career. Turned out to be both problem=
=3D
s.
Clyde Tullis on wed 14 jul 10
Bearings? If you apply more pressure to the wheelhead does the wobble
increase? Or any movement when you grab the shaft and shake it? Could y=
=3D
ou
just replace the bearings? Does the wheelhead move side to side in the
wobble or like a spinning coin as it settles to a stop on the bar? Side =
=3D
to
side =3D3D bearings coin movement =3D3D shaft/ wheelhead.
Shaft or wheelhead? if you reset the wheelhead rotated 180 degrees, does=
=3D
it
change the amount of wobble? try 90? If so it's the wheelhead.
Flywheel? I've seen flywheels with a chunk taken out to balance them. S=
=3D
et
the wheel on it's side and spin it. mark where it stops. Repeat. Repeat.
Repeat. Does it stop in the same spot? If so, add weight to the opposit=
=3D
e
side. It would have to be pretty bad to cause a problem unless you beari=
=3D
ngs
are bad .=3D20
| |
|
