Totally knackered (that time of year)

Not sure whether that is me or my landie

Anyway it is close to *that* time of the year and so she is an MOT failure,
apparantly there is sommat up with one of the brake cylinders (well that
would explain the uneven braking, pulls to one side and then the next) the
steering needs sorting (really?) and the unexpected bit more welding on the
chassis, cos she has been getting a bit of punishment there (maybe that
explains the lean I was complaining about a while ago)

then the non MOT bits like a CV joint about to go (but I suspected that)

Oh and I forgot the exhaust, but then most people do, I prefer to cut a bit
of aluminium can out and hold it on with jubilee clips for as long as that
will last cos it is a terrible waste sticking a new pipe on when its only
going to rust

Fun isn't it. But it is all going to be sorted, cos landies live for ever
(well series landies at least

--
Larry
Series 3 rust and holes

On Thu, 4 Aug 2005 20:13:23 +0100, "Larry" <[email protected]>
wrote:

>then the non MOT bits like a CV joint about to go (but I suspected that)

Mine has failed before now for knackered UJ's in the props. Wonder why
yours didnt (somebody was either being too keen or too lax!)

and on a side note, can the UJ, such as found in a LR prop shaft be
called a CV joint?, or is this incorrect?. I was under the impression
that a CV joint had more freedom of movement than a normal UJ?

Tom Woods wrote:

> On Thu, 4 Aug 2005 20:13:23 +0100, "Larry" <[email protected]>
> wrote:
>
>>then the non MOT bits like a CV joint about to go (but I suspected that)
>
> Mine has failed before now for knackered UJ's in the props. Wonder why
> yours didnt (somebody was either being too keen or too lax!)
>
> and on a side note, can the UJ, such as found in a LR prop shaft be
> called a CV joint?, or is this incorrect?. I was under the impression
> that a CV joint had more freedom of movement than a normal UJ?
No, it cannot be called a CV joint (well it can, but its wrong). Landrovers
(Series and 90/110 anyway) except Stage 1 have simple Hooke type universal
joints at all positions on the prop shafts, and the same for the front
drive axles (except for Stage 1 and very early Series 1). The problem with
these simple U-joints is that when operating through an angle the angular
velocity changes during each turn of the shaft. In most prop shaft
installations this does not matter, as it can be evened out simply by
having the diff and gearbox shafts parallel (so the angles at each end are
the same) and arranging the joints at each end so that the velocity changes
cancel out. On the drive axles on the front axle, there is only one joint
each side, so the velocity changes do not cancel out. On Stage 1 and 90/110
there is also a problem with the front prop shaft because the nose of the
diff has to be angled up to clear the track rod, so the angle on the two
joints is not the same.
Constant velocity joints come in a variety of types, and greatly reduce or
eliminate the change in angular velocity with each turn when operating
through an angle. With constant four wheel drive (or front wheel drive)
they are considered necessary to prevent unpleasant kick back through the
steering.

There are three types that are or have been used in Landrovers. The front
drive axles of early Series 1 used Tracta joints (with a large grooved
ball) as they were constant four wheel drive, and Range Rovers,
Discoveries, 90/110 and Freelanders use Rzeppa type joints with a number of
small balls, a bit like a ball race, as do most modern front wheel drive
cars. In addition, Range Rovers, Discoveries and Stage 1 S3 use a double
Hooke joint at the rear of the front prop shaft.

CV joints do not have a greater useable angle than Hooke joints, the maximum
angle depends on the design of the joint in both cases, but where the prop
shaft angles are not equal at each end, the larger the deflection the more
necessary CV joints become. 90/110 really should have a CV joint at the
rear of the front prop shaft, but they get awau with a Hooke joint by
setting the joints at each end of the shaft out of phase.
JD

Mebbee I was thinking of the noise that the CV joints in my ford made when
they were on the blink and linking that with the similar clonking in the
landie.


--
þT

L'autisme c'est moi

"Space folds, and folded space bends, and bent folded space contracts and
expands unevenly in every way unconcievable except to someone who does not
believe in the laws of mathematics"


"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Thu, 4 Aug 2005 20:13:23 +0100, "Larry" <[email protected]>
> wrote:
>
> >then the non MOT bits like a CV joint about to go (but I suspected that)
>
> Mine has failed before now for knackered UJ's in the props. Wonder why
> yours didnt (somebody was either being too keen or too lax!)
>
> and on a side note, can the UJ, such as found in a LR prop shaft be
> called a CV joint?, or is this incorrect?. I was under the impression
> that a CV joint had more freedom of movement than a normal UJ?
>

Tom Woods wrote:

> Mine has failed before now for knackered UJ's in the props. Wonder why
> yours didnt (somebody was either being too keen or too lax!)

Somebody was being too keen, propshafts aren't part of the MOT.

John

John Greystrong wrote:
> Tom Woods wrote:
>
>> Mine has failed before now for knackered UJ's in the props. Wonder why
>> yours didnt (somebody was either being too keen or too lax!)
>
>
> Somebody was being too keen, propshafts aren't part of the MOT.

They are if it's got a cardon shaft handbrake (a la Landy) as they are
then a fundamental part of the braking system.


--
EMB

On Fri, 05 Aug 2005 20:35:13 +1200, EMB <[email protected]> wrote:

>John Greystrong wrote:
>> Tom Woods wrote:
>>
>>> Mine has failed before now for knackered UJ's in the props. Wonder why
>>> yours didnt (somebody was either being too keen or too lax!)
>>
>>
>> Somebody was being too keen, propshafts aren't part of the MOT.
>
>They are if it's got a cardon shaft handbrake (a la Landy) as they are
>then a fundamental part of the braking system.

I'm quite happy for it to fail on em too since i don't especially want
to drive around on knackered props!