User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-23-2011, 11:09 AM #16
1engineer's Avatar
1engineer 1engineer is offline
Moderator
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
1engineer 1engineer is offline
Moderator
1engineer's Avatar
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
Quote:
Originally Posted by MeBe4running View Post
So far I haven't. I will keep you posted on that. I guess it will just a little due to wind drag, however not enough to sweat it. I have a scan gauge with is pretty dam accurate. So will let you know. Sweet profile pic, where do you ski?
You will also lose efficiency due to the weight difference of the racks.
1engineer is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 01:35 PM #17
phillyd2's Avatar
phillyd2 phillyd2 is offline
Senior Member
 
Join Date: Jan 2006
Location: Bucks County, PA
Posts: 3,600
Real Name: Dave
phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough
phillyd2 phillyd2 is offline
Senior Member
phillyd2's Avatar
 
Join Date: Jan 2006
Location: Bucks County, PA
Posts: 3,600
Real Name: Dave
phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough
Is the "GOBI" on the wind screen a sticker that can be removed?
phillyd2 is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 01:43 PM #18
adio3x's Avatar
adio3x adio3x is offline
Senior Member
 
Join Date: Mar 2010
Location: STL, MO
Age: 35
Posts: 1,981
adio3x will become famous soon enough
adio3x adio3x is offline
Senior Member
adio3x's Avatar
 
Join Date: Mar 2010
Location: STL, MO
Age: 35
Posts: 1,981
adio3x will become famous soon enough
Quote:
Originally Posted by phillyd2 View Post
Is the "GOBI" on the wind screen a sticker that can be removed?
yes. I don't have one on mine.
__________________
Andrew
2010 Battleship Grey SR5 4x4
Sweet mod list.
adio3x is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 02:13 PM #19
phillyd2's Avatar
phillyd2 phillyd2 is offline
Senior Member
 
Join Date: Jan 2006
Location: Bucks County, PA
Posts: 3,600
Real Name: Dave
phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough
phillyd2 phillyd2 is offline
Senior Member
phillyd2's Avatar
 
Join Date: Jan 2006
Location: Bucks County, PA
Posts: 3,600
Real Name: Dave
phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough phillyd2 is a jewel in the rough
Quote:
Originally Posted by adio3x View Post
yes. I don't have one on mine.
Did you take it off or ordered without?
phillyd2 is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 02:19 PM #20
adio3x's Avatar
adio3x adio3x is offline
Senior Member
 
Join Date: Mar 2010
Location: STL, MO
Age: 35
Posts: 1,981
adio3x will become famous soon enough
adio3x adio3x is offline
Senior Member
adio3x's Avatar
 
Join Date: Mar 2010
Location: STL, MO
Age: 35
Posts: 1,981
adio3x will become famous soon enough
Quote:
Originally Posted by phillyd2 View Post
Did you take it off or ordered without?
Well I ordered it from another member, I guess he didn't include it or he took it off. I plan on stickering mine up like my old yakima anyways.
__________________
Andrew
2010 Battleship Grey SR5 4x4
Sweet mod list.
adio3x is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 06:50 PM #21
IsItMe? IsItMe? is offline
Member
 
Join Date: Jul 2010
Location: New Orleans
Posts: 77
IsItMe? is on a distinguished road
IsItMe? IsItMe? is offline
Member
 
Join Date: Jul 2010
Location: New Orleans
Posts: 77
IsItMe? is on a distinguished road
can't wait to get mine


Looks great man!
__________________
2010 Silver LTD|Doug Thorley Headers|Borla Catback|Toytec-Radflo 2.5 Lift W/ SAW Rears|Gobi Stealth Rack|Black Rock Yuma 17X8|285/70 Duratracs|Spidertrax Spacers|Husky Weather Beaters|Stubby ant.|TRD drop in|Grillcraft Mesh grille.........Gone

New- TRD PRO ATTITUDE BLACK
IsItMe? is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 07:01 PM #22
Antman's Avatar
Antman Antman is offline
Elite Member
 
Join Date: Feb 2011
Location: Maryland
Age: 54
Posts: 6,877
Real Name: Jeff
Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all
Antman Antman is offline
Elite Member
Antman's Avatar
 
Join Date: Feb 2011
Location: Maryland
Age: 54
Posts: 6,877
Real Name: Jeff
Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all Antman is a name known to all
Quote:
Originally Posted by 1engineer View Post
You will also lose efficiency due to the weight difference of the racks.
That is the most ridiculous thing I've heard. The rack weighs 70 lbs- my groceries weigh more than that each week. Maybe a loss in mpg from the wind drag, but the weight, gimme a freakin break...
__________________
HERE FISHY FISHY FISHY!
Antman is offline   Reply With QuoteReply With Quote
Old 05-23-2011, 09:36 PM #23
kingpin748's Avatar
kingpin748 kingpin748 is offline
Member
 
Join Date: Apr 2010
Location: Calgary
Age: 49
Posts: 606
kingpin748 is on a distinguished road
kingpin748 kingpin748 is offline
Member
kingpin748's Avatar
 
Join Date: Apr 2010
Location: Calgary
Age: 49
Posts: 606
kingpin748 is on a distinguished road
Quote:
Originally Posted by 1engineer View Post
You will also lose efficiency due to the weight difference of the racks.
Quote:
Originally Posted by Antman View Post
That is the most ridiculous thing I've heard. The rack weighs 70 lbs- my groceries weigh more than that each week. Maybe a loss in mpg from the wind drag, but the weight, gimme a freakin break...
You shouldn't argue with him. He is an engineer.
__________________
My Truck(Bro Show)
kingpin748 is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 09:56 AM #24
1engineer's Avatar
1engineer 1engineer is offline
Moderator
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
1engineer 1engineer is offline
Moderator
1engineer's Avatar
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
Quote:
Originally Posted by Antman View Post
That is the most ridiculous thing I've heard. The rack weighs 70 lbs- my groceries weigh more than that each week. Maybe a loss in mpg from the wind drag, but the weight, gimme a freakin break...
Remove Excess Weight

"Avoid keeping unnecessary items in your vehicle, especially heavy ones. An extra 100 pounds in your vehicle could reduce your MPG by up to 2 percent. The reduction is based on the percentage of extra weight relative to the vehicle's weight and affects smaller vehicles more than larger ones."

Fuel Economy Benefit: 1–2%/100 lbs
Equivalent Gasoline Savings: $0.04–$0.08/gallon
The above quote came directly from fueleconomy.gov and is a very simple answer.

The key thing is to differentiate the effect of weight on stop-and-go driving vs. steady-state cruising.

"In steady-state cruising on level roads and with everything else being equal (e.g., a car made of aluminum vs. an indentical car made of steel), weight doesn't have much effect on mileage. Weight slightly increases the rolling resistance of the tires and slightly increases the drag of the bearings in the wheels, but at anything but very low speeds, these are minor contributors to overall vehicle drag - the big factor is aero resistance which is not affected by weight at all.

But in stop-and-go driving, weight has a big effect on mileage because you're constantly accelerating the weight up to speed, and then wasting this energy as heat when you apply the brakes."

This is a good explanation also from a different source and I did not include any with mathmatical formulas as there is not one little "super gas milage formula of if you add X weight you will decrease your gas milage by y" and also the math, while not difficult, is very complex and cumbersome.

The best rule of thumb for weight is this: Every 100 pounds added to your vehicle will drop your gas milage 1-2%. So you can see there is a drop in efficiency for adding the rack. It is slight but these things add up quick.

Now, I don't know what I said that would have caused you to post your comment. I did not say how much efficiency will be lost, just some will be lost. Most people seem to forget about weight and efficiency but remember the aerodynamic losses. I was just reminding them is all. If you think my posts are "the most ridiculous thing I've heard" or "gimme a freakin break" then you are entitled to your opinion but I usually don't post something unless I know a little about the subject.

One more thing: In the case of the gobi rack being discussed the loss due to weight will be greater than the aerodynamic losses. Why? I'll let you do the math and figure it out as your response to my result will be much more emotional than factual.
1engineer is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 10:06 AM #25
sp8ball's Avatar
sp8ball sp8ball is offline
Member
 
Join Date: Jan 2010
Location: Bel Air, MD
Posts: 456
sp8ball is on a distinguished road
sp8ball sp8ball is offline
Member
sp8ball's Avatar
 
Join Date: Jan 2010
Location: Bel Air, MD
Posts: 456
sp8ball is on a distinguished road
Quote:
Originally Posted by 1engineer View Post
The above quote came directly from fueleconomy.gov and is a very simple answer.
Don't trust the government!

Can't wait to see the pics of the ladder. Antman's rack is supposed to arrive today, and we'll be having an install gathering at his place this weekend.
__________________
**2011 SR5 - Salsa Red Pearl** Backup Camera, Moonroof, Upgraded Stereo, Third Row, Remote Start, and Anti-Theft
Mods: Weathertech DigitalFit Floor Liners, Husky Weatherbeater Cargo Liner, Stubby Antenna, Black Steelcraft Nerf Bars, Interior & Puddle Lamp LEDs, 35% Window Tint, Vinyl Chrome Strip Blackout, Color-matched Door Handles, AVS Bugflector II, Toytec Front Plate Spacer Lift, Interior Accent Lighting, Backup Camera Switch, Cupholder & Door Handle LEDs, Infinity Kappa Speakers
My Build Thread: http://www.toyota-4runner.org/5th-ge...id-2010-a.html
sp8ball is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 10:49 AM #26
1engineer's Avatar
1engineer 1engineer is offline
Moderator
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
1engineer 1engineer is offline
Moderator
1engineer's Avatar
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
Quote:
Originally Posted by sp8ball View Post
Don't trust the government!

Can't wait to see the pics of the ladder. Antman's rack is supposed to arrive today, and we'll be having an install gathering at his place this weekend.
I usually don't trust them either. In this case though it is common knowledge for most. All things being what they are, If I needed a heavy duty rack this would be the one I would buy. They are very functional and look good too.
1engineer is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 10:59 AM #27
SeattleMike's Avatar
SeattleMike SeattleMike is offline
Senior Member
 
Join Date: Feb 2010
Location: Umm... Seattle ;)
Age: 54
Posts: 1,683
SeattleMike is on a distinguished road
SeattleMike SeattleMike is offline
Senior Member
SeattleMike's Avatar
 
Join Date: Feb 2010
Location: Umm... Seattle ;)
Age: 54
Posts: 1,683
SeattleMike is on a distinguished road
Quote:
Originally Posted by Antman View Post
That is the most ridiculous thing I've heard. The rack weighs 70 lbs- my groceries weigh more than that each week. Maybe a loss in mpg from the wind drag, but the weight, gimme a freakin break...
My rack weighs 90 pounds and I lost 1 mpg in city driving as soon as I put it on. I lost another 1 mpg when I added the tent. City driving is affected most because that extra weight affects every acceleration, most of which is done in the city. My cargo kit cost me another mpg and it can't possibly be from drag because it is in the cabin.

Not even Antman can change the laws of physics.
__________________
2010 Trail Edition 4Runner - KDSS / Nav / RRO Sliders / Perkins Rack / Java Drawers / Duratracs 265/70/17/E


SeattleMike is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 11:42 AM #28
SigSense SigSense is offline
Member
 
Join Date: Nov 2010
Location: Southeast FL
Posts: 576
SigSense is on a distinguished road
SigSense SigSense is offline
Member
 
Join Date: Nov 2010
Location: Southeast FL
Posts: 576
SigSense is on a distinguished road
Smile

Quote:
Originally Posted by SeattleMike View Post

Not even Antman can change the laws of physics.
I think it was called parasitic drag from my undergrad days:

http://en.wikipedia.org/wiki/Drag_(physics)
SigSense is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 12:06 PM #29
MeBe4running's Avatar
MeBe4running MeBe4running is offline
Member
 
Join Date: Apr 2010
Location: NC
Posts: 882
MeBe4running is on a distinguished road
MeBe4running MeBe4running is offline
Member
MeBe4running's Avatar
 
Join Date: Apr 2010
Location: NC
Posts: 882
MeBe4running is on a distinguished road
Wink True.....

Quote:
Originally Posted by 1engineer View Post
Remove Excess Weight

"Avoid keeping unnecessary items in your vehicle, especially heavy ones. An extra 100 pounds in your vehicle could reduce your MPG by up to 2 percent. The reduction is based on the percentage of extra weight relative to the vehicle's weight and affects smaller vehicles more than larger ones."

Fuel Economy Benefit: 1–2%/100 lbs
Equivalent Gasoline Savings: $0.04–$0.08/gallon
The above quote came directly from fueleconomy.gov and is a very simple answer.

The key thing is to differentiate the effect of weight on stop-and-go driving vs. steady-state cruising.

"In steady-state cruising on level roads and with everything else being equal (e.g., a car made of aluminum vs. an indentical car made of steel), weight doesn't have much effect on mileage. Weight slightly increases the rolling resistance of the tires and slightly increases the drag of the bearings in the wheels, but at anything but very low speeds, these are minor contributors to overall vehicle drag - the big factor is aero resistance which is not affected by weight at all.

But in stop-and-go driving, weight has a big effect on mileage because you're constantly accelerating the weight up to speed, and then wasting this energy as heat when you apply the brakes."

This is a good explanation also from a different source and I did not include any with mathmatical formulas as there is not one little "super gas milage formula of if you add X weight you will decrease your gas milage by y" and also the math, while not difficult, is very complex and cumbersome.

The best rule of thumb for weight is this: Every 100 pounds added to your vehicle will drop your gas milage 1-2%. So you can see there is a drop in efficiency for adding the rack. It is slight but these things add up quick.

Now, I don't know what I said that would have caused you to post your comment. I did not say how much efficiency will be lost, just some will be lost. Most people seem to forget about weight and efficiency but remember the aerodynamic losses. I was just reminding them is all. If you think my posts are "the most ridiculous thing I've heard" or "gimme a freakin break" then you are entitled to your opinion but I usually don't post something unless I know a little about the subject.

One more thing: In the case of the Gobi rack being discussed the loss due to weight will be greater than the aerodynamic losses. Why? I'll let you do the math and figure it out as your response to my result will be much more emotional than factual.
Thank you for your long detailed response. I don't disagree, whatsoever. I just suggested that they may be a decrease in fuel economy due to wind drag without mentioning weight at all. I still have a tent to put on, axe and shovel, 60'' Inch High Lift Jack, Lights and the list goes on. I ready for a decrease in fuel economy. I'm not worried about that; (yet) till gas is $10/gallon. If I was I would drive a Prius. This is not my city cruiser, i live 4 mile up a dirt road.
MeBe4running is offline   Reply With QuoteReply With Quote
Old 05-24-2011, 12:17 PM #30
1engineer's Avatar
1engineer 1engineer is offline
Moderator
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
1engineer 1engineer is offline
Moderator
1engineer's Avatar
 
Join Date: Feb 2011
Location: Southern Appalachian Mountains
Age: 61
Posts: 9,947
Real Name: Greg
1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light 1engineer is a glorious beacon of light
Quote:
Originally Posted by MeBe4running View Post
Thank you for your long detailed response. I don't disagree, whatsoever. I just suggested that they may be a decrease in fuel economy due to wind drag without mentioning weight at all. I still have a tent to put on, axe and shovel, 60'' Inch High Lift Jack, Lights and the list goes on. I ready for a decrease in fuel economy. I'm not worried about that; (yet) till gas is $10/gallon. If I was I would drive a Prius. This is not my city cruiser, i live 4 mile up a dirt road.
No worries here! My original response was posted because you did not mention weight and I know most people forget about it and then complain about the gas milage after the mod. I was just tryin' to help.
1engineer is offline   Reply With QuoteReply With Quote
Reply

Tags
5th gen , gobi stealth rack , trail

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gobi Rack GROUP BUY. Stealth Rooftop Rack. Free ladder or sun roof insert reklov 5th gen T4Rs 300 06-26-2012 07:57 AM
Gobi Rack GROUP BUY. Stealth + Ranger Rooftop Rack with FREE Ladder reklov 4th Gen T4Rs 11 06-04-2011 05:05 PM
Gobi Rack GROUP BUY. Stealth + Ranger Rooftop Rack with FREE Ladder reklov 3rd gen T4Rs 21 05-16-2011 09:52 PM
Gobi Rack GROUP BUY. Stealth + Ranger Rooftop Rack with FREE Ladder reklov 3rd gen T4Rs 0 04-21-2011 04:47 AM
Gobi Stealth Rack sgsymon 5th gen T4Rs 0 01-04-2011 09:57 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 04:43 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020