XJ XJ8 / XJR ( X308 ) 1997 - 2003

Quick method of warming up an automatic car on a cold day

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Old Jan 23, 2013 | 03:23 PM
  #61  
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At least Germany doesn't involve a Visa & a flight on a clapped out old Ilyushin, although a particularly memorable week in Moscow once was ample payback for risking Aeroflot's finest
 
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Old Jan 23, 2013 | 03:31 PM
  #62  
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Originally Posted by sandy85
do not even try to come over without white XJR. Do not forget that i am bored sick rich uptown girl who likes expensive presents and men who open the doors. I drive a Jaaag so it have to be true. Well and my neighbors think that too if you ask them.
I have a blue XJR, but it's forecast to snow here on Friday so it will be white-does that help you at all?
 
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Old Jan 23, 2013 | 03:37 PM
  #63  
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Wow, I step outside for a few minutes to power brake some motorcycles on the ice and look where this thread has gone!
 
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Old Jan 23, 2013 | 03:42 PM
  #64  
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Light the blue touchpaper & watch this thread go into orbit...
 
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Old Jan 23, 2013 | 03:53 PM
  #65  
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Originally Posted by Mikey
Wow, I step outside for a few minutes to power brake some motorcycles on the ice and look where this thread has gone!
Just had a go at 'power braking' my mate's new Fendt vario tractor, looks like I broke it

I'm going to send the repair bill to red october
 

Last edited by Sean B; Jan 23, 2013 at 04:13 PM.
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Old Jan 23, 2013 | 04:16 PM
  #66  
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shouldn't we include Mercedes & ZF gearbox repair specialists in this thread for completeness?
 
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Old Jan 23, 2013 | 04:21 PM
  #67  
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Originally Posted by Sean B
Just had a go at 'power braking' my mate's new Fendt vario tractor, looks like I broke it

I'm going to send the repair bill to red october
Wouldn't that be power 'breaking' then?
 
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Old Jan 23, 2013 | 04:26 PM
  #68  
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Now that you know that you are dealing with Sandy's mom over here, ....do I need to point out that I will not tolerate ANY innuendos, or overtures toward my baby? Gentlemen,.....be gentlemen. And let's have a civilized Jaguar discussions. Ok?
 
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Old Jan 23, 2013 | 04:50 PM
  #69  
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Originally Posted by Sean B
Just had a go at 'power braking' my mate's new Fendt vario tractor, looks like I broke it

I'm going to send the repair bill to red october
Don't they powerbrake tanks to turn? In fact you can turn in place by having one set of tracks go forward while the opposite track goes reverse.

And tractors normally have split brake pedals for holding one side to make a turn. Has that changed?
 
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Old Jan 23, 2013 | 04:54 PM
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Originally Posted by Sean B
shouldn't we include Mercedes & ZF gearbox repair specialists in this thread for completeness?
Well you also need a line crew chief or two.

And of course, since the word "brutal" was invoked ... our friend Brutal ... who appears to be MIA at the mo'

Bet you he wouldn't have any problem whatsoever with the concept of powerbraking
 
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Old Jan 24, 2013 | 02:49 AM
  #71  
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Originally Posted by plums
Don't they powerbrake tanks to turn? In fact you can turn in place by having one set of tracks go forward while the opposite track goes reverse.

And tractors normally have split brake pedals for holding one side to make a turn. Has that changed?
Blasted French wouldn't include my UK tank driving permit on my Permis de Conduire on the grounds that civilians can't drive military vehicles.
News to me.
Anyway, you are quite right. Both tracks are driven independently and can be either braked or reversed.
A useful technique for eliminating entrenched infantry is to put the tank on the trench and spin it round a couple of times.
I don't know about the Abrams but the British Challenger still uses a mechanical gearbox while the majority of industrial tracked vehicles (like my Liebherr) use torque converters.
The Challenger uses a Jaguar engine as a donkey to start its main diesel.

Until recently tractors did have 'fiddle' brakes like hill climb cars. The more recent ones are of a complexity that makes a Jaguar look like a pocket calculator and I will have nothing to do with them.

Anyway, after a couple of pages of posts clearly indicating the efficacy of Jaguar heated seats what about the 'left foot braking really increasing takeoff' question ?
 
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Old Jan 24, 2013 | 05:38 AM
  #72  
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Originally Posted by Sean B
Just had a go at 'power braking' my mate's new Fendt vario tractor, looks like I broke it

I'm going to send the repair bill to red october
You have to catch me first-just as well my powertrain is fully functional
 
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Old Jan 24, 2013 | 07:07 AM
  #73  
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Originally Posted by steveinfrance
Blasted French wouldn't include my UK tank driving permit on my Permis de Conduire on the grounds that civilians can't drive military vehicles.
News to me.
Anyway, you are quite right. Both tracks are driven independently and can be either braked or reversed.
A useful technique for eliminating entrenched infantry is to put the tank on the trench and spin it round a couple of times.
I don't know about the Abrams but the British Challenger still uses a mechanical gearbox while the majority of industrial tracked vehicles (like my Liebherr) use torque converters.
The Challenger uses a Jaguar engine as a donkey to start its main diesel.

Until recently tractors did have 'fiddle' brakes like hill climb cars. The more recent ones are of a complexity that makes a Jaguar look like a pocket calculator and I will have nothing to do with them.

Anyway, after a couple of pages of posts clearly indicating the efficacy of Jaguar heated seats what about the 'left foot braking really increasing takeoff' question ?
hmmmm ... a Jaguar/Donkey ... this thread could have some traction ...

Left foot braking ... aka brake standing ... lets the motor get into a fatter part of the torque curve and utilises the torque multiplication capabilities of the torque converter ... of course you may then be limited by tire traction ... but there is a sweet spot where the preloading is exactly right for the conditions.

It's more flashing the throttle early rather than holding it against the brakes for seconds on end.
 

Last edited by plums; Jan 24, 2013 at 07:10 AM.
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Old Jan 24, 2013 | 07:09 AM
  #74  
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Originally Posted by Red October
You have to catch me first-just as well my powertrain is fully functional
There is always the possibility of switching to the "Big Bee"
 
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Old Jan 24, 2013 | 07:34 AM
  #75  
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Originally Posted by plums
It's more flashing the throttle early rather than holding it against the brakes for seconds on end.
Is it safe to try or will it have the same general effect as my wife engaging reverse at 30 mph in my Dolly Sprint many years ago ?
 
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Old Jan 24, 2013 | 07:53 AM
  #76  
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Originally Posted by plums
There is always the possibility of switching to the "Big Bee"
Erm, there is one BIG problem with doing that-the Bentley sits at the back of the driveway behind the Jag, so once the Jag becomes immobile, then the big beast at the back turns into a big shiny driveway ornament as well because it will be nicely blocked in
 
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Old Jan 29, 2013 | 03:09 PM
  #77  
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I don't know if this has been posted but I believe that adjusting thermostat to high temp and running the AC at the same time would put a load on the engine.

I consider this a safer option.
 
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Old Jan 29, 2013 | 03:15 PM
  #78  
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Originally Posted by steveinfrance
Is it safe to try or will it have the same general effect as my wife engaging reverse at 30 mph in my Dolly Sprint many years ago ?
Pretty safe. Try it progressively until you get the hang of the sweet spot for your car and conditions.

No guarantees as to your permis de conduire if observed by the local gendarmerie though.
 
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Old Jan 29, 2013 | 03:19 PM
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Originally Posted by Morpheus311
I don't know if this has been posted but I believe that adjusting thermostat to high temp and running the AC at the same time would put a load on the engine.

I consider this a safer option.
Not quite sure what you're suggesting here............
 
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Old Jan 30, 2013 | 08:16 AM
  #80  
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The air condition is not a lot of load on the engine but it would cause the engine to warm up sooner. You should simply hit the 'def' button and adjust temp to 'hi'.
 
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