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  #111 (permalink)  
Old May 23rd 08, 05:06 PM posted to uk.rec.cars.classic
Conor
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Posts: 2,068
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In article , Adrian says...

OK, so you can get a G-clamp onto the piston.

It's just down to "Will the clamp turn it rather than push it?" (Very
unlikely ime of turny-piston calipers) and "Is there anything solid
enough on t'other side...?"


Thankyou.

Either way, it's still a bodge.

Didn't say otherwise.


--
Conor

I only please one person per day. Today is not your day. Tomorrow isn't
looking good either. - Scott Adams
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  #112 (permalink)  
Old May 23rd 08, 05:15 PM posted to uk.rec.cars.classic
:Jerry:
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Posts: 165
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"SteveH" wrote in message
k...
:Jerry: wrote:

Here's a picture.

http://www.trevor-turner.co.uk/pages/Caliper_Small.html

Definitely designed for being wound in with the appropriate tool.


...but that's not a Rover P6 calliper...


****ing Google images.

That turned up on a search for a P6 caliper, ffs.


**** happens...

Ok, here you go, an diagram of the complete rear axle, brakes and
suspension, whilst this image shows the early Dunlop brakes that had
separate hand brake pads and actuator mechanism the layout is
similar - certainly the working clearances etc. although the later
Girling calliper was mounted towards the '12 O'clock' possision that
shown here http://www.roversd1.nl/sd1web/techtalk/p6dedion.gif.
(Quite why this P6 diagram is on a site dedicated to the SD1
thought...)




  #113 (permalink)  
Old May 23rd 08, 05:15 PM posted to uk.rec.cars.classic
:Jerry:
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Posts: 165
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"SteveH" wrote in message
k...
:Jerry: wrote:

Here's a picture.

http://www.trevor-turner.co.uk/pages/Caliper_Small.html

Definitely designed for being wound in with the appropriate tool.


...but that's not a Rover P6 calliper...


****ing Google images.

That turned up on a search for a P6 caliper, ffs.


**** happens...

Ok, here you go, an diagram of the complete rear axle, brakes and
suspension, whilst this image shows the early Dunlop brakes that had
separate hand brake pads and actuator mechanism the layout is
similar - certainly the working clearances etc. although the later
Girling calliper was mounted towards the '12 O'clock' possision that
shown here http://www.roversd1.nl/sd1web/techtalk/p6dedion.gif.
(Quite why this P6 diagram is on a site dedicated to the SD1
thought...)




  #114 (permalink)  
Old May 23rd 08, 05:34 PM posted to uk.rec.cars.classic
Dave Plowman (News)
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Posts: 7,500
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In article ,
Adrian wrote:
":Jerry:" gurgled happily, sounding much like
they were saying:


your understanding is less than someone who has seen these callipers
(and the Rover P6), never mind worked on them.


puts hand up I've never seen a P6 rear caliper up close, but I'm
wondering exactly wtf Conor's on about...


I really fail to see any way in which a wind-back piston can be wound
back with a G-clamp, especially given that it doesn't sound like it's a
sliding-yoke single-piston design...


It's a swing caliper - I suppose the predecessor of sliding types. The
whole caliper pivots. The pads start out with wedge shaped linings then
gradually become 'square' as they wear down. It has a single piston
internally which acts on a self adjusting mechanism which acts on the
single piston which operates one pad - the pivoting action causing the
other one to grip. Similar really to a sliding design.
What also worries me about Conor's 'technique' is the back op the caliper
has a tin cover to allow access to the mechanism. And if you put pressure
on that via a g-clamp it would likely distort and allow muck in - the last
thing you want with these.

--
*Why isn't there a special name for the back of your knee?

Dave Plowman London SW
To e-mail, change noise into sound.
  #115 (permalink)  
Old May 23rd 08, 05:35 PM posted to uk.rec.cars.classic
Dave Plowman (News)
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Posts: 7,500
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In article ,
SteveH wrote:
I really fail to see any way in which a wind-back piston can be wound
back with a G-clamp, especially given that it doesn't sound like it's a
sliding-yoke single-piston design...


Here's a picture.


http://www.trevor-turner.co.uk/pages/Caliper_Small.html


Definitely designed for being wound in with the appropriate tool.


That's nothing like a P6 one.

--
*I pretend to work. - they pretend to pay me.

Dave Plowman London SW
To e-mail, change noise into sound.
  #116 (permalink)  
Old May 23rd 08, 05:40 PM posted to uk.rec.cars.classic
Dave Plowman (News)
external usenet poster
 
Posts: 7,500
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In article ,
Adrian wrote:
Partial parts diagram here
http://www.anugraha.org.uk/rover/par...r_cal_ipb2.gif, shows the
cover and some of the internal components.


Ah, the good ol' British Motor Industry... Why make something simple...?


It's Girling - and was also used by Ford on the Mk IV Zephyrs. Probably
other makes too. I think Rover were sort of forced to use it as Dunlop who
made the brakes on the earlier cars stopped production.

As I said before it works extremely well - the best handbrake I've had on
any car - but like anything slightly more complicated than usual is open
to bodging by those more familiar with simple ones.

--
*If you must choose between two evils, pick the one you've never tried before

Dave Plowman London SW
To e-mail, change noise into sound.
  #118 (permalink)  
Old May 23rd 08, 06:53 PM posted to uk.rec.cars.classic
Campingstoveman
external usenet poster
 
Posts: 76
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Assuming I have understood you correctly no I'm not, I cant abide swearing
in any form or bickering about nothing in particular.

Martin P
"Adrian" wrote in message
...
"campingstoveman" gurgled happily,
sounding much like they were saying:

Gentlemen,

As the instigator of this thread I am disappointed that you have to have
a slanging match that borders on total ignorance from the both of you,
please do us all the favour of either going somewhere else to carry out
your petty arguments or just shut up.


NAHAY?



  #119 (permalink)  
Old May 23rd 08, 08:59 PM posted to uk.rec.cars.classic
:Jerry:
external usenet poster
 
Posts: 165
Default Tyres


"Conor" wrote in message
...
In article , Adrian says...

OK, so you can get a G-clamp onto the piston.

It's just down to "Will the clamp turn it rather than push it?"
(Very
unlikely ime of turny-piston calipers) and "Is there anything solid
enough on t'other side...?"


Thankyou.


Except that Adrian and Steve were mislead by a misleading Google link,
of course you would have known that instantly you followed that URL if
you had ever seen (let alone worked) on a P6 rear brakes...


  #120 (permalink)  
Old May 24th 08, 02:59 AM posted to uk.rec.cars.classic
Rob.[_2_]
external usenet poster
 
Posts: 51
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Dave Plowman (News) wrote:

In article ,
Conor wrote:

In article , Willy Eckerslyke
says...

Conor wrote:


I used a G clamp.

I can only go on my experience on the 2000TC I owned. And it works
just as well on the Rover 600's as well.

Just a thought, but you do realise we're talking about the _rear_
brakes, don't you?


Yes. - the inboard ****ing things on the P6.



My Rover 600 was a 2L with discs all round. So was my 420. In fact, the
Capri is the only car I've had without rear discs since before the turn
of the century.



As a matter of interest what did the 'other' end of the g-clamp bear on?
The P6 has just a tin cover over the mechanism on that side rather than
the cast iron that is more usual.


May I butt in - But I would have thought the pitch of the thread on the
G cramp would have been different to that in the caliper, so you would
have conflicting results. So the push to turn ratio is not 1:1 using the
cramp.

I haven't seen a Rover caliper only others which you had to screw the
piston back in and that was for the hand brake operation. These needed a
tool which gripped the piston and you turned it for resetting. No way
could a G cramp be used in this situation.


 




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