L

Liam

Guest

• Jul 6, 2004

• #1

Does anyone know what the tracking should be set to on a series 3, the
manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
the measurement to degrees.

Thanks

Liam

 

D

David G. Bell

Guest

• Jul 6, 2004

• #2

On Tuesday, in article
<srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:

> Does anyone know what the tracking should be set to on a series 3, the
> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
> the measurement to degrees.

Simple trigonometry, though you need to know how far from the hinge-
point you take the measurement at. Wheel rim, isn't it?


Anyway, let's say that the rim is 400mm across. That's one side of the
triangle. I'm assuming that 1.2mm is the difference between front and
back, but is it the total for both wheels?

I'll stick to the math.

1.2mm divided by 400mm

Hey, 1.2mm at 400mm is 3 milliradians

There are 2pi radians in 360 degrees. So 57.3 degrees to a radian.

57.3 degrees multiplied by 0.003 radians

0 degrees, 10 minutes, 19 seconds.

For these small angles, double the distance is double the angle, and
vice versa. As long as you have both distance and angle measuring the
same thing -- one wheel or both wheels -- and aim for the middle of the
range, that should be near enough.

If you've heard of stuff like sines and cosines and tangents, don't
worry. For this sort of small angle, the differences don't matter.
Radians are based on measuring along the arc of a circle, rather than a
right-angled triangle, and you'd need a very sharp pencil to see the
difference in a drawing.



--
David G. Bell -- SF Fan, Filker, and Punslinger.

"History shows that the Singularity started when Sir Tim Berners-Lee
was bitten by a radioactive spider."

 

A

Alex

Guest

• Jul 6, 2004

• #3

On Tue, 06 Jul 2004 14:25:45 +0100 (BST), dbell@zhochaka.demon.co.uk
("David G. Bell") wrote:

>On Tuesday, in article
> <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
>
>> Does anyone know what the tracking should be set to on a series 3, the
>> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
>> the measurement to degrees.
>
>Simple trigonometry, though you need to know how far from the hinge-
>point you take the measurement at. Wheel rim, isn't it?
>
>

>0 degrees, 10 minutes, 19 seconds.
>

I have one that measures in degrees, and I'm bloody sure it doesn't
have minutes on the scale, merely degrees. It certainly doesn't have
seconds.....


Alex

 

C

cutlea01

Guest

• Jul 7, 2004

• #4

"Liam" <liamhoskinAT@blueyonderDOT.coDOT.uk> wrote in message news:<srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>...
> Does anyone know what the tracking should be set to on a series 3, the
> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
> the measurement to degrees.
>
> Thanks
>
> Liam

Formula to convert degrees to mm is 2x sine(toe in angle in degrees) x
rim dia in mm.

Alan C.

 

L

Liam

Guest

• Jul 7, 2004

• #5

"Alex" <nospam.alex@cbmsys.co.uk> wrote in message
news:2a1me01lk2dpfkj3fncjh3ihlfp2lnooj3@4ax.com...
> On Tue, 06 Jul 2004 14:25:45 +0100 (BST), dbell@zhochaka.demon.co.uk
> ("David G. Bell") wrote:
>
> >On Tuesday, in article
> > <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> > liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
> >
> >> Does anyone know what the tracking should be set to on a series 3, the
> >> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I
convert
> >> the measurement to degrees.
> >
> >Simple trigonometry, though you need to know how far from the hinge-
> >point you take the measurement at. Wheel rim, isn't it?
> >
> >
>
> >0 degrees, 10 minutes, 19 seconds.
> >
>
> I have one that measures in degrees, and I'm bloody sure it doesn't
> have minutes on the scale, merely degrees. It certainly doesn't have
> seconds.....
>
>
> Alex

Angles in degrees are usually measured in Degrees, Minutes and seconds
rather than as a decimal number. Each degree is made up of 60 minutes and
each minute is made up of 60 seconds. For example 1.5 degrees is really 1
degree 30 minutes and 0 seconds.

Liam

 

L

Liam

Guest

• Jul 7, 2004

• #6

""David G. Bell"" <dbell@zhochaka.demon.co.uk> wrote in message
news:20040706.1325.93776snz@zhochaka.demon.co.uk...
> On Tuesday, in article
> <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
>
> > Does anyone know what the tracking should be set to on a series 3, the
> > manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I
convert
> > the measurement to degrees.
>
> Simple trigonometry, though you need to know how far from the hinge-
> point you take the measurement at. Wheel rim, isn't it?
>
>
> Anyway, let's say that the rim is 400mm across. That's one side of the
> triangle. I'm assuming that 1.2mm is the difference between front and
> back, but is it the total for both wheels?
>
> I'll stick to the math.
>
> 1.2mm divided by 400mm
>
> Hey, 1.2mm at 400mm is 3 milliradians
>
> There are 2pi radians in 360 degrees. So 57.3 degrees to a radian.
>
> 57.3 degrees multiplied by 0.003 radians
>
> 0 degrees, 10 minutes, 19 seconds.
>
> For these small angles, double the distance is double the angle, and
> vice versa. As long as you have both distance and angle measuring the
> same thing -- one wheel or both wheels -- and aim for the middle of the
> range, that should be near enough.
>
> If you've heard of stuff like sines and cosines and tangents, don't
> worry. For this sort of small angle, the differences don't matter.
> Radians are based on measuring along the arc of a circle, rather than a
> right-angled triangle, and you'd need a very sharp pencil to see the
> difference in a drawing.
>
>
>
> --
> David G. Bell -- SF Fan, Filker, and Punslinger.
>
> "History shows that the Singularity started when Sir Tim Berners-Lee
> was bitten by a radioactive spider."


Thanks, that's been a real help.

Regards

Liam

 

A

Alex

Guest

• Jul 7, 2004

• #7

>> >0 degrees, 10 minutes, 19 seconds.
>> >
>>
>> I have one that measures in degrees, and I'm bloody sure it doesn't
>> have minutes on the scale, merely degrees. It certainly doesn't have
>> seconds.....
>>
>>
>> Alex
>
>Angles in degrees are usually measured in Degrees, Minutes and seconds
>rather than as a decimal number. Each degree is made up of 60 minutes and
>each minute is made up of 60 seconds. For example 1.5 degrees is really 1
>degree 30 minutes and 0 seconds.
>
>Liam
>

I am fully aware of that. However a scale that reads 5 - 0 - 5 degrees
in about 2" of space is very unlikey to have minutes on it, let alone
seconds. It is more likely to be measured in 0.5 (30s) intervals.

Alex

 

W

weallhatebillgates

Guest

• Jul 6, 2004

• #8

Button bashing in practice for another round of Daley Thompson's
Decathlon, Liam <liamhoskinAT@blueyonderDOT.coDOT.uk> left Shakespeare
to the monkeys by typing...
>How do I convert
>the measurement to degrees.
>
using a variation of Pythagoras' theorem.
Or measure distance between inside edges of rims (not on tyres - just
inside lip) on centreline in front of and behind axle. For better
accuracy, measure distance at front then roll vehicle forward so wheels
turn 180deg. (to compensate for bent rims/dings etc). Getting three
heavy friends to bounce on the front bumper a few times first is also a
good idea (to settle the suspension - except when you're running a
Perkins 4203(/6?) with 13-leaf ultra-heavy-duty springs - then you just
get slapped by three heavy friends for taking the ****.....
--
O O :-o O O
| I so did it again |
O :-o O
Weallhatebillgates would be found at hotmail

 

A

Alex

Guest

• Jul 6, 2004

• #9

On Tue, 06 Jul 2004 14:25:45 +0100 (BST), dbell@zhochaka.demon.co.uk
("David G. Bell") wrote:

>On Tuesday, in article
> <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
>
>> Does anyone know what the tracking should be set to on a series 3, the
>> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
>> the measurement to degrees.
>
>Simple trigonometry, though you need to know how far from the hinge-
>point you take the measurement at. Wheel rim, isn't it?
>
>

>0 degrees, 10 minutes, 19 seconds.
>

I have one that measures in degrees, and I'm bloody sure it doesn't
have minutes on the scale, merely degrees. It certainly doesn't have
seconds.....


Alex

 

C

cutlea01

Guest

• Jul 7, 2004

• #10

"Liam" <liamhoskinAT@blueyonderDOT.coDOT.uk> wrote in message news:<srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>...
> Does anyone know what the tracking should be set to on a series 3, the
> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
> the measurement to degrees.
>
> Thanks
>
> Liam

Formula to convert degrees to mm is 2x sine(toe in angle in degrees) x
rim dia in mm.

Alan C.

 

L

Liam

Guest

• Jul 7, 2004

• #11

"Alex" <nospam.alex@cbmsys.co.uk> wrote in message
news:2a1me01lk2dpfkj3fncjh3ihlfp2lnooj3@4ax.com...
> On Tue, 06 Jul 2004 14:25:45 +0100 (BST), dbell@zhochaka.demon.co.uk
> ("David G. Bell") wrote:
>
> >On Tuesday, in article
> > <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> > liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
> >
> >> Does anyone know what the tracking should be set to on a series 3, the
> >> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I
convert
> >> the measurement to degrees.
> >
> >Simple trigonometry, though you need to know how far from the hinge-
> >point you take the measurement at. Wheel rim, isn't it?
> >
> >
>
> >0 degrees, 10 minutes, 19 seconds.
> >
>
> I have one that measures in degrees, and I'm bloody sure it doesn't
> have minutes on the scale, merely degrees. It certainly doesn't have
> seconds.....
>
>
> Alex

Angles in degrees are usually measured in Degrees, Minutes and seconds
rather than as a decimal number. Each degree is made up of 60 minutes and
each minute is made up of 60 seconds. For example 1.5 degrees is really 1
degree 30 minutes and 0 seconds.

Liam

 

L

Liam

Guest

• Jul 7, 2004

• #12

""David G. Bell"" <dbell@zhochaka.demon.co.uk> wrote in message
news:20040706.1325.93776snz@zhochaka.demon.co.uk...
> On Tuesday, in article
> <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
>
> > Does anyone know what the tracking should be set to on a series 3, the
> > manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I
convert
> > the measurement to degrees.
>
> Simple trigonometry, though you need to know how far from the hinge-
> point you take the measurement at. Wheel rim, isn't it?
>
>
> Anyway, let's say that the rim is 400mm across. That's one side of the
> triangle. I'm assuming that 1.2mm is the difference between front and
> back, but is it the total for both wheels?
>
> I'll stick to the math.
>
> 1.2mm divided by 400mm
>
> Hey, 1.2mm at 400mm is 3 milliradians
>
> There are 2pi radians in 360 degrees. So 57.3 degrees to a radian.
>
> 57.3 degrees multiplied by 0.003 radians
>
> 0 degrees, 10 minutes, 19 seconds.
>
> For these small angles, double the distance is double the angle, and
> vice versa. As long as you have both distance and angle measuring the
> same thing -- one wheel or both wheels -- and aim for the middle of the
> range, that should be near enough.
>
> If you've heard of stuff like sines and cosines and tangents, don't
> worry. For this sort of small angle, the differences don't matter.
> Radians are based on measuring along the arc of a circle, rather than a
> right-angled triangle, and you'd need a very sharp pencil to see the
> difference in a drawing.
>
>
>
> --
> David G. Bell -- SF Fan, Filker, and Punslinger.
>
> "History shows that the Singularity started when Sir Tim Berners-Lee
> was bitten by a radioactive spider."


Thanks, that's been a real help.

Regards

Liam

 

W

weallhatebillgates

Guest

• Jul 6, 2004

• #13

Button bashing in practice for another round of Daley Thompson's
Decathlon, Liam <liamhoskinAT@blueyonderDOT.coDOT.uk> left Shakespeare
to the monkeys by typing...
>How do I convert
>the measurement to degrees.
>
using a variation of Pythagoras' theorem.
Or measure distance between inside edges of rims (not on tyres - just
inside lip) on centreline in front of and behind axle. For better
accuracy, measure distance at front then roll vehicle forward so wheels
turn 180deg. (to compensate for bent rims/dings etc). Getting three
heavy friends to bounce on the front bumper a few times first is also a
good idea (to settle the suspension - except when you're running a
Perkins 4203(/6?) with 13-leaf ultra-heavy-duty springs - then you just
get slapped by three heavy friends for taking the ****.....
--
O O :-o O O
| I so did it again |
O :-o O
Weallhatebillgates would be found at hotmail

 

D

David G. Bell

Guest

• Jul 6, 2004

• #14

On Tuesday, in article
<srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:

> Does anyone know what the tracking should be set to on a series 3, the
> manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I convert
> the measurement to degrees.

Simple trigonometry, though you need to know how far from the hinge-
point you take the measurement at. Wheel rim, isn't it?


Anyway, let's say that the rim is 400mm across. That's one side of the
triangle. I'm assuming that 1.2mm is the difference between front and
back, but is it the total for both wheels?

I'll stick to the math.

1.2mm divided by 400mm

Hey, 1.2mm at 400mm is 3 milliradians

There are 2pi radians in 360 degrees. So 57.3 degrees to a radian.

57.3 degrees multiplied by 0.003 radians

0 degrees, 10 minutes, 19 seconds.

For these small angles, double the distance is double the angle, and
vice versa. As long as you have both distance and angle measuring the
same thing -- one wheel or both wheels -- and aim for the middle of the
range, that should be near enough.

If you've heard of stuff like sines and cosines and tangents, don't
worry. For this sort of small angle, the differences don't matter.
Radians are based on measuring along the arc of a circle, rather than a
right-angled triangle, and you'd need a very sharp pencil to see the
difference in a drawing.



--
David G. Bell -- SF Fan, Filker, and Punslinger.

"History shows that the Singularity started when Sir Tim Berners-Lee
was bitten by a radioactive spider."

 

L

Liam

Guest

• Jul 7, 2004

• #15

""David G. Bell"" <dbell@zhochaka.demon.co.uk> wrote in message
news:20040706.1325.93776snz@zhochaka.demon.co.uk...
> On Tuesday, in article
> <srwGc.28047$eK2.26827@fe1.news.blueyonder.co.uk>
> liamhoskinAT@blueyonderDOT.coDOT.uk "Liam" wrote:
>
> > Does anyone know what the tracking should be set to on a series 3, the
> > manual says 1.2 to 2.4 mm but my gauge reads in degrees. How do I
convert
> > the measurement to degrees.
>
> Simple trigonometry, though you need to know how far from the hinge-
> point you take the measurement at. Wheel rim, isn't it?
>
>
> Anyway, let's say that the rim is 400mm across. That's one side of the
> triangle. I'm assuming that 1.2mm is the difference between front and
> back, but is it the total for both wheels?
>
> I'll stick to the math.
>
> 1.2mm divided by 400mm
>
> Hey, 1.2mm at 400mm is 3 milliradians
>
> There are 2pi radians in 360 degrees. So 57.3 degrees to a radian.
>
> 57.3 degrees multiplied by 0.003 radians
>
> 0 degrees, 10 minutes, 19 seconds.
>
> For these small angles, double the distance is double the angle, and
> vice versa. As long as you have both distance and angle measuring the
> same thing -- one wheel or both wheels -- and aim for the middle of the
> range, that should be near enough.
>
> If you've heard of stuff like sines and cosines and tangents, don't
> worry. For this sort of small angle, the differences don't matter.
> Radians are based on measuring along the arc of a circle, rather than a
> right-angled triangle, and you'd need a very sharp pencil to see the
> difference in a drawing.
>
>
>
> --
> David G. Bell -- SF Fan, Filker, and Punslinger.
>
> "History shows that the Singularity started when Sir Tim Berners-Lee
> was bitten by a radioactive spider."


Thanks, that's been a real help.

Regards

Liam