Engineers - Degrees Settings?

[Cunning Plan]

The next job once I have finished the headlining install is to fit the new adjustable spring plates (rear suspension on the bus).

In the Bentley manual (super special know-it-all manual), it states a measurement of 23° + 50' is the stock / default setting of the spring plates for a 'Station Wagon' Bay.  

What does 23° + 50' mean?  

I have downloaded a Inclinometer on to my phone, so I think that is telling me to hold the spring plate at an angle of 23° to get it stock, but what does +50' mean? What is the ' measurement? To me, it means feet / foot ??  

[EDGE]

that's arc minutes...
1 degree = 60' (arcminutes)

1 arcminute= 60" (arcseconds)

written as 40° 15' 45''

[F Body]

Quoting: EDGE

that's arc minutes...
1 degree = 60' (arcminutes)

1 arcminute= 60" (arcseconds)

written as 40° 15' 45''

Basically 23° plus nearly one degree, but minus nothing if that helps

[Andy]

Surprised there is that degree of accuracy in suspension setup on an old bus like that. Does it give any tolerances?

[Roadkill]

Quoting: Andy

Surprised there is that degree of accuracy in suspension setup on an old bus like that.

Utterly shocked, to be honest.  

24 degrees will be more than adequate !

Edit - about 23.83 degrees.

[Cunning Plan]

Quoting: EDGE

that's arc minutes...
1 degree = 60' (arcminutes)

1 arcminute= 60" (arcseconds)

written as 40° 15' 45''

Quoting: F Body

Basically 23° plus nearly one degree, but minus nothing if that helps

Ahh, yes that helps! It makes sense when you explain it like that. If you move it to a spline and it's below 23°, then you move it to the next spline which will be over 23° because of the way they are made, so go more, not less.

Quoting: Andy

Surprised there is that degree of accuracy in suspension setup on an old bus like that. Does it give any tolerances?

Quoting: Roadkill

Utterly shocked, to be honest.

Well, if you put one side on different from the other, it will affect the handling and ride-height.

Here is how I got on:

[Cunning Plan]

Thanks for the help guys!

[EDGE]

you're welcome :)

[Roadkill]

Got your bushes sorted in the end, then ?

[Cunning Plan]

Yes, well, a compromise at least.

I forgot to post about them.

When I was getting some O-rings fabricated for the Cherokee, the engineering place I was at specialised in hydraulic connections and hoses. They had a machine there that they used to taper hoses to their connections. I cannot remember the name of the machine, but it was like a bench grinder with a special rig to hold what you are 'tapering'.

I asked if we could try the bushes in the machine and they agreed. The finish is a little rough, but there is about 1mm now taken off the largest / widest part of the circumference of the bush.

Hopefully that should be enough!

[Roadkill]

Cool

[Andy]

Top work there CP.

Do you have a calibration cert for the accelerometer in the phone to prove that angle?

[Cunning Plan]

Quoting: Andy

Do you have a calibration cert for the accelerometer in the phone to prove that angle?

[F Body]

Quoting: Andy

Do you have a calibration cert for the accelerometer in the phone to prove that angle?

Well he has it in a bag