Look. I'm goin' the garage for a bottle of meths' cus i'm ded thirsty like, so i'll give it 'death' down our road, and lob the handbrake on and see if you're right.
I'll report back in ten minutes. ;)

I wait with bated breath.

CharlesY
 
JCB is trundling down our road with a bucket load of oily metally bits as i type. ;)
I bottled out tbh.:eek:

WIMP!!!

About once a week I heave on the handbrake of my Disco for a second or two just to clean the drum and make sure it works.

I don't set the brake when I park it here at night.
In gear, on the flat. Saves the linkage from stretching.

CharlesY
 
WIMP!!!



About once a week I heave on the handbrake of my Disco for a second or two just to clean the drum and make sure it works.



I don't set the brake when I park it here at night.


In gear, on the flat. Saves the linkage from stretching.



CharlesY





Well now you've said that, i MIGHT just give it a little tweek upwards next time i go out in it.​
 
you should try a maserati, yer adjust it before the mot, it stays adjusted long enough to pass mot , then its crap fer the next 11 months and 1 week till yer adjust it again
 
OK .... it's bollocks. Sorry about that.

The shuddering is due to the torque of the transmission brake rocking the whole tranmission/engine a tiny tad as the brake bites, then as the friction in the drum changes due to the transition from SLIDING friction to STATIC friction (and there is a huge difference) the effect is almost like rapid brake ON - brake OFF situation bouncing on the mounts, and we get that ghastly violent shudder.
There's no way to stop is because there is so much flex capability in the drive trains and mounts.

It isn't good for anything that shuddering, and it should only happen at slow speeds.
At higher speeds pulling on the handbrake may make bad noises, and it sure will wipe the rust off the handbrake drum, but it ought to be smooth till just before it stops, which is when if you have a look underneath you will probably feel the heat and see the glow of a red hot drum.

CharlesY
thanks CharlesY - always willing to learn. I think it's still the case though that all that transmission stress gets amplified down the line because of the flex capability, and that this CAN get directed to one little half-shaft, which may decide to snap. Series 3 stub axles have a habit of sheering as well - don't know about Disco ones. That drum certainly gets red-hot. We had a V8 110 once with a badly adjusted transmission brake, and it seized up nicely, with a nice pool of hot oil on the road as well. In Croydon.
Incidentally, none of this applies to the Disco 3 - no idea how they manage to MoT that, with its silly Yank pedal and unreliable electronic whatsits.
 
. dun know if its a good point or not but with them little pedals yer can take the rachet off and do handbrake turns without taken yer hands off the wheel... if yer that way inclined
 
The potential to apply TORQUE to the propshaft(s) via the handbrake, like "negative" torque if you want to see it that way is enormous, and probably exceeds the positive torque from the engine.

I think you could do in a half shaft smartish at about 15 to 20 mph if you hoicked the handbrake on as fast and as hard as you could.

Let us all know if you try this and it works, so we'll all know not to do it!

CharlesY
 
The potential to apply TORQUE to the propshaft(s) via the handbrake, like "negative" torque if you want to see it that way is enormous, and probably exceeds the positive torque from the engine.

I think you could do in a half shaft smartish at about 15 to 20 mph if you hoicked the handbrake on as fast and as hard as you could.

Let us all know if you try this and it works, so we'll all know not to do it!

CharlesY
The MoT blokes usually do it at about 15mph. Still makes me want to scream though. That said, they haven't broken one of mine yet.
 
Cringe ......................


Agreed. Can't you insist on them using the old system for testing the brakes, you know, that old bomb thing with a meter on it, that they shoved in the passenger footwell before slammin' the brakes on, on the road?
 
Agreed. Can't you insist on them using the old system for testing the brakes, you know, that old bomb thing with a meter on it, that they shoved in the passenger footwell before slammin' the brakes on, on the road?
htf is that gonna alter the h/brake problem?
 
What problem. :confused:
We've gone way past 'THE/THAT' problem now. We're talkin' about mot testing the brakes on a Landy.
Really, do try keepin' up.;)
ffs dimwit.. if pulling hand brake on while moving int a good idea then pulling it on while moving and using an early 19th century brake tester int a good idea either! unless this brake tester has come from the magic land of narnia and can make the half shafts and stuff extra strong fer the duration of the test.


****wit
 

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