Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Export Grand Cherokee 2011+

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #3601  
Old 07-05-2014, 06:51 AM
Swampy's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Jul 2011
Location: Oakford, Western Australia
Posts: 662
Thanks: 2
Thanked 36 Times in 27 Posts
Rep Power: 34686
Swampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond reputeSwampy has a reputation beyond repute
Re: WK2 DownUnder

Plane takes off. Maybe a bit of bump when the plane goes over the end of the conveyor though....


Sent from my iPhone using JeepGarage
__________________

__________________
Regards

Swampy

JGC Overland CRD, Deep Cherry Red

"I'm just here for the biscuits!"
Reply With Quote
  #3602  
Old 07-05-2014, 02:32 PM
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Jan 2014
Location: Brisbane
Posts: 41
Thanks: 2
Thanked 2 Times in 2 Posts
Rep Power: 369
foglamp is on a distinguished road
Re: WK2 DownUnder

On the CV Boot issue again, is a visual inspection enough to tell if the CV boot is faulty or do you have to wait for it to start leaking grease.
The reason I ask is my new Laredo is a 2/4 build which puts it in the period where the faulty boots were fitted.
We are leaving on a long trip soon and I am fairly concerned about them failing on the trip and having to wait for weeks for replacements.
The dealer " Claims" he checked them pre delivery but that does not instill much confidence.
I am considering having them independently checked out.
Cheers
__________________

__________________
Reply With Quote
  #3603  
Old 07-05-2014, 06:26 PM
Boxheadmr's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Jan 2014
Location: Sydney, Australia
Posts: 307
Thanks: 20
Thanked 11 Times in 9 Posts
Rep Power: 664
Boxheadmr is on a distinguished road
Re: WK2 DownUnder

I didnt check mine and only noticed when I saw the grease on the wheels.
If the boot does fail you can still drive it.
__________________
Reply With Quote
  #3604  
Old 07-05-2014, 08:14 PM
Barboots's Avatar
Senior Member
My Jeep: 2014 3.0L WK2
 
Join Date: Aug 2013
Location: Perth, Western Australia
Posts: 1,439
Thanks: 42
Thanked 125 Times in 111 Posts
Rep Power: 3722
Barboots has disabled reputation
Re: WK2 DownUnder

Maybe just try rotating the boot?

Cheers,
Steve
__________________
2014 Overland CRD
Perth, Western Australia
Reply With Quote
  #3605  
Old 07-05-2014, 08:47 PM
BobT's Avatar
Premium Member
My Jeep: 2012 3.0L WK2
 
Join Date: Oct 2011
Location: Sydney, NSW, Australia
Posts: 1,747
Thanks: 610
Thanked 80 Times in 70 Posts
Rep Power: 73670
BobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond reputeBobT has a reputation beyond repute
Garage
Re: WK2 DownUnder

Quote:
Originally Posted by jskf01 View Post
anyone know if there is any difference in the performance of the 3.6L engines between vehicles that have one exhaust pipe and those that have two? Referring to MY14 4x4 models only. I notice some have 1 exhaust like Laredo but Limited have 2.
It is highly unlikely that there would be any measurable difference but you could check with the published power specs. If you look under the car, you'll probably find a single exhaust pipe running to the back then splitting in two. The two tail pipes is intended to give the impression that each bank of the V6 has its own exhaust system as one might expect in high performance cars. It is not uncommon to see models go from one tail pipe to two to four and back to one again purely for product definition purposes.
__________________
Ordered 9 Nov 2011 - Delivered 3:30pm Friday 13 April 2012
Jeep Grand Cherokee Laredo 3L CRD, Black Forest Green Pearl, Quadra-lift, Off-road Adventure II, Front Recovery Hook, Mopar Tow Bar, Mopar Rock Rails, 150A Projecta Battery Isolator, Tekonsha P3 Brake Controller, Bridgestone D697 265/60R18 LT, Kimberley Kamper Special Edition
MudMap M7 off/on road sat nav, Chief front recovery hooks "chrome", Chief 3mm bash plate
Reply With Quote
  #3606  
Old 07-07-2014, 07:07 PM
Benn0's Avatar
Premium Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 1,123
Thanks: 25
Thanked 79 Times in 69 Posts
Rep Power: 16278
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: WK2 DownUnder

Quote:
Originally Posted by vl_bt1 View Post
The plane would move. The engines generate thrust on the surrounding air which isn't influenced by the conveyor belt. The wheels turning on the conveyor belt and the speed is irrelevant.
The riddle specifically says that the conveyor belt has a control system that prevents the speed of the plane being any greater than the speed of the conveyor belt in reverse. So the conveyor belt does influence the wings movement through air. Without air movement over the wing the plane cannot take off, unless it is a jumpjet or a tilt-rotor, etc.
__________________
MY14 Grand Cherokee LTD CRD - Deep Cherry Red
Status: Delivered 6th May 2014 - Mod time
Reply With Quote
  #3607  
Old 07-07-2014, 07:40 PM
Barboots's Avatar
Senior Member
My Jeep: 2014 3.0L WK2
 
Join Date: Aug 2013
Location: Perth, Western Australia
Posts: 1,439
Thanks: 42
Thanked 125 Times in 111 Posts
Rep Power: 3722
Barboots has disabled reputation
Re: WK2 DownUnder

Ughhh... not this again. It's like hanging out with the Dungeons and Dragons crew in the Science Lab during lunch break.
__________________
2014 Overland CRD
Perth, Western Australia
Reply With Quote
  #3608  
Old 07-07-2014, 08:11 PM
Benn0's Avatar
Premium Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 1,123
Thanks: 25
Thanked 79 Times in 69 Posts
Rep Power: 16278
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: WK2 DownUnder

Hey.... you were the brainiac who knew what CV stood for
__________________
MY14 Grand Cherokee LTD CRD - Deep Cherry Red
Status: Delivered 6th May 2014 - Mod time
Reply With Quote
  #3609  
Old 07-07-2014, 09:31 PM
Jarse's Avatar
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Aug 2013
Location: Sydney, Australia
Posts: 120
Thanks: 2
Thanked 9 Times in 8 Posts
Rep Power: 636
Jarse is on a distinguished road
WK2 DownUnder

Nope. The presence of a conveyer makes no difference. The engines (and aircraft) will move relative to the AIR mass in which they sit, provided the engines are developing sufficient thrust to move the mass of the aircraft from rest.
__________________
Reply With Quote
  #3610  
Old 07-07-2014, 09:38 PM
Benn0's Avatar
Premium Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 1,123
Thanks: 25
Thanked 79 Times in 69 Posts
Rep Power: 16278
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: WK2 DownUnder

Quote:
Originally Posted by Jarse View Post
Nope. The presence of a conveyer makes no difference. The engines (and aircraft) will move relative to the AIR mass in which they sit, provided the engines are developing sufficient thrust to move the mass of the aircraft from rest.
This breaks a specification of the riddle:

This conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction).

The engines provide forward movement, the wings provide upward lift, which only happens with forward movement (ie air passing over them at a certain speed). The riddle says forward movement is prevented by the design of the conveyor belt.
__________________
MY14 Grand Cherokee LTD CRD - Deep Cherry Red
Status: Delivered 6th May 2014 - Mod time
Reply With Quote
  #3611  
Old 07-07-2014, 11:19 PM
Member
 
Join Date: Apr 2014
Posts: 44
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 283
vl_bt1 is on a distinguished road
Re: WK2 DownUnder

Quote:
Originally Posted by Benn0 View Post
This breaks a specification of the riddle:

This conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction).

The engines provide forward movement, the wings provide upward lift, which only happens with forward movement (ie air passing over them at a certain speed). The riddle says forward movement is prevented by the design of the conveyor belt.
link to original riddle?

Lift is not generated by forward movement, it is generated by airflow over an aerofoil.

The only way for the "conveyor" to prevent the plane from moving forward, if the engines are producing thrust and if the plane is not physically locked to something, is to accelerate the air, as I mentioned earlier. If this occurred, even if the plane isnt moving relative to the conveyor, it IS moving relative to the airflow, and once it reaches a certain AIR speed the plane will move relative to the conveyor- upward as its wings generate enough lift to over come gravity.


Edit: That specification is irrelevant, the conveyor only influences the speed at which the wheels turn, which has no forward drive components for the aircraft, they are to facilitate landing and breaking. There would be drag of the bearings involved, but that would be miniscule compared to the thrust from the engines
__________________
Reply With Quote
  #3612  
Old 07-07-2014, 11:41 PM
Benn0's Avatar
Premium Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 1,123
Thanks: 25
Thanked 79 Times in 69 Posts
Rep Power: 16278
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: WK2 DownUnder

Quote:
Originally Posted by vl_bt1 View Post
link to original riddle?

Lift is not generated by forward movement, it is generated by airflow over an aerofoil.

The only way for the "conveyor" to prevent the plane from moving forward, if the engines are producing thrust and if the plane is not physically locked to something, is to accelerate the air, as I mentioned earlier. If this occurred, even if the plane isnt moving relative to the conveyor, it IS moving relative to the airflow, and once it reaches a certain AIR speed the plane will move relative to the conveyor- upward as its wings generate enough lift to over come gravity.


Edit: That specification is irrelevant, the conveyor only influences the speed at which the wheels turn, which has no forward drive components for the aircraft, they are to facilitate landing and breaking. There would be drag of the bearings involved, but that would be miniscule compared to the thrust from the engines
Airflow over the aerofoil is a result of forward movement (unless there is a cyclone in progress).

There are many ways a conveyor belt can 'prevent' a plane moving forward, it may have cables holding the wheels, or some kind of brake mechanism on the wheels, it isn't important, the riddle just says this is a fact that it has this feature.

And now you are touching on the bit of the question that is ambiguous, what does it mean by speed? Ground speed measured at the wheels, or wind speed? If you measure speed at the wheels then nothing happens, if you measure wind speed then the plane moves forward at 200kph, the conveyor moves back at 200kph and the wheels spin at 400kph and the plane takes off.

There are a number of versions of the riddle, one specifically says speed at the wheels, another just says speed. If you google it you will come across pages and pages of views and calculations. Which ones you agree with will depend on your approach to solving it. The real answer is there is no answer....
__________________

__________________
MY14 Grand Cherokee LTD CRD - Deep Cherry Red
Status: Delivered 6th May 2014 - Mod time
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Did anyone name their WK2? HEADSHOCK Grand Cherokee - WK2 - 98 10-16-2012 09:25 PM
Not A SRT8 WK2 But A WK2 Speed Demon Review! NYCSRTATE Grand Cherokee SRT - WK2 17 12-04-2010 12:37 AM
No WK2 for me after all JBaumgart Grand Cherokee - WK2 - 17 06-08-2010 11:25 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 07:15 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.