rear disk brakes
07-14-2004, 07:34 AM
#101
Guest
Posts: n/a
Re: rear disk brakes
DaveW did pass the time by typing:
> jbjeep wrote:
>
>>>> Actually, although modern passenger trains tend to use disc brakes in
>>>> addition, most railroad equipment I've ever encountered uses neither a
>>>> disc or drum. They use a "tread brake", that is a cast iron or composite
>>>> brake shoe that is applied to the outside of the wheel, on the running
>>>> surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
>>>>
>>
>>
>> so what makes all the sparks that sets off the fires out here? we get fires
>> all the time in the summer months right along the railroad tracks. had a
>> big one last summer in portland - nearly lost some houses because of it.
> Kids playing with matches along the tracks
^^^^
that's the #1 cause around here.
Most of this area is flatlandia so the trains don't brake so drasticly.
I'd suspect areas with steeper grades that wheels/brakes sparking could
be a real problem.
--
DougW
> jbjeep wrote:
>
>>>> Actually, although modern passenger trains tend to use disc brakes in
>>>> addition, most railroad equipment I've ever encountered uses neither a
>>>> disc or drum. They use a "tread brake", that is a cast iron or composite
>>>> brake shoe that is applied to the outside of the wheel, on the running
>>>> surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
>>>>
>>
>>
>> so what makes all the sparks that sets off the fires out here? we get fires
>> all the time in the summer months right along the railroad tracks. had a
>> big one last summer in portland - nearly lost some houses because of it.
> Kids playing with matches along the tracks
^^^^
that's the #1 cause around here.
Most of this area is flatlandia so the trains don't brake so drasticly.
I'd suspect areas with steeper grades that wheels/brakes sparking could
be a real problem.
--
DougW
07-14-2004, 09:36 AM
#102
Guest
Posts: n/a
Re: rear disk brakes
That is usually caused by the wheel to track joint.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
07-14-2004, 09:36 AM
#103
Guest
Posts: n/a
Re: rear disk brakes
That is usually caused by the wheel to track joint.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
07-14-2004, 09:36 AM
#104
Guest
Posts: n/a
Re: rear disk brakes
That is usually caused by the wheel to track joint.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
07-14-2004, 09:36 AM
#105
Guest
Posts: n/a
Re: rear disk brakes
That is usually caused by the wheel to track joint.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
When wheel bearings go on them, they can shoot sparks out the bearing
itself or they seize the wheels up causing them to drag along the tracks
shooting mega sparks.
A brake can seize on causing the same thing too.
That is/was one of the big issues when they canceled the conductors in
the caboose back in the 80's up here in Canada. These guys actually sat
up top watching for stuff like that, now a heat sensor in the train
station 'looks' at wheels as they go on by.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
jbjeep wrote:
>
> >>Actually, although modern passenger trains tend to use disc brakes in
> >>addition, most railroad equipment I've ever encountered uses neither a
> >>disc or drum. They use a "tread brake", that is a cast iron or composite
> >>brake shoe that is applied to the outside of the wheel, on the running
> >>surface. Iron on steel. Smokes sometimes, doesn't catch on fire!
> >>
>
> so what makes all the sparks that sets off the fires out here? we get fires all the
> time in the summer months right along the railroad tracks. had a big one last summer
> in portland - nearly lost some houses because of it.
07-14-2004, 01:03 PM
#106
Guest
Posts: n/a
Re: rear disk brakes
Well, I suppose they are tread brakes in a sort of way ; they bear on the
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
07-14-2004, 01:03 PM
#107
Guest
Posts: n/a
Re: rear disk brakes
Well, I suppose they are tread brakes in a sort of way ; they bear on the
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
07-14-2004, 01:03 PM
#108
Guest
Posts: n/a
Re: rear disk brakes
Well, I suppose they are tread brakes in a sort of way ; they bear on the
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
07-14-2004, 01:03 PM
#109
Guest
Posts: n/a
Re: rear disk brakes
Well, I suppose they are tread brakes in a sort of way ; they bear on the
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
side of the wheel
( the y axis ) not the z axis. Perhaps the traditional sort caused flat
spots on the wheel
which were more difficult to machine out. I'm guessing.
--
Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40F4EA1A.E5185C1F@***.net...
> Makes me wonder why, when you have a ready made surface.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > I think disc brakes on trains are comparatively recent ; older stuff
here
> > does
> > use the tread brakes you describe.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
07-14-2004, 03:10 PM
#110
Guest
Posts: n/a
Re: rear disk brakes
I use to have to drive through a yard in Houston littered with
pairs of flat wheels.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
DougW wrote:
>
> Most of this area is flatlandia so the trains don't brake so drasticly.
> I'd suspect areas with steeper grades that wheels/brakes sparking could
> be a real problem.
>
> --
> DougW
pairs of flat wheels.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
DougW wrote:
>
> Most of this area is flatlandia so the trains don't brake so drasticly.
> I'd suspect areas with steeper grades that wheels/brakes sparking could
> be a real problem.
>
> --
> DougW