Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-07-2023, 12:15 AM   #1 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 12,331

Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.68 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 4,156
Thanked 4,362 Times in 3,339 Posts
Why aren't trucks wide enough? Jason question.

Just noticed that every truck recently made has wheels that extend out wider than the body, which is why the fender flares have to be added to enclose them. Why not make the body wider and thereby increase interior volume instead? Can't afford the extra frontal area?

Had that thought while looking at the Cybertruck and noticing the plastic fender flares that look out of place.


__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-07-2023, 12:31 AM   #2 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,481
Thanks: 7,707
Thanked 8,531 Times in 7,021 Posts
The last faint echo of the pontoon fender era. I blame the Willys MB.

Short term, the box shape led to Ford kicking their postwar design to the French and going to the Shoebox Ford. But on a longer scale, the CJ got it's fender flares.

edit:
An interesting case is the 1950 Studebaker truck.


hymanltd.com/wp-content/uploads/2014/09/5270.jpg

Earlier models are clearly a stepside. Is this a stepside or slabside bed?
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

History is a warning for the future -- Dr. John Campbell

Last edited by freebeard; 10-07-2023 at 12:37 AM..
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
BlackGold6.4 (12-31-2023)
Old 10-07-2023, 10:52 AM   #3 (permalink)
Somewhat crazed
 
Piotrsko's Avatar
 
Join Date: Sep 2013
Location: 1826 miles WSW of Normal
Posts: 4,028
Thanks: 461
Thanked 1,097 Times in 968 Posts
The flares are added to reduce wet spray, more glamorous than the flaps on a commercial vehicle and keep some of the road dirt off the body. In order to get clearance for those wide large diameter tires you need to change the offset of the rim so the tire doesn't hit suspension when turning corners. That change in offset sticks the edge of the tire further out in the windstream. Ever see a 4wd covered in wheel spray gunk?

As for wide enough: not a consumer demand. You can almost put a full sized twin bed mattress flat on the rear seat of my F250, but it's a huge pain to park in most shopping centers between the lines and still get the doors open.
__________________
casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
  Reply With Quote
Old 10-08-2023, 02:42 AM   #4 (permalink)
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 1,924

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
Thanks: 1,022
Thanked 529 Times in 426 Posts
  1. The wheels have to be far enough out to make room for a wide enough bed. Making the whole vehicle wide to fit would likely increase air drag.
  2. Fuel consumption rules are based off of wheel base width and length. So it would make sense to make a smaller truck and find ways to make the wheel base wider at the same time to make it easier to meet CAFE standards.
__________________
  Reply With Quote
The Following User Says Thank You to Isaac Zachary For This Useful Post:
JSH (12-11-2023)
Old 10-08-2023, 03:14 PM   #5 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
An interesting example to compare might be the current generation of the Suzuki Jimny. The international model, also available in Japan despite the higher taxation, has the fender flares, and the wheels have a different offset and are wider too, while the kei model specific for Japan doesn't have fender flares in order to keep width within the kei-jidosha class limits, and AFAIK its tires are also narrower.

No surprise most of the ancient trucks also tend to have narrower tires?
  Reply With Quote
Old 10-08-2023, 03:48 PM   #6 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,481
Thanks: 7,707
Thanked 8,531 Times in 7,021 Posts
The Samurai (like my brother's 84 model) got the wide track because of problems with roll-overs. He's only rolled his once.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

History is a warning for the future -- Dr. John Campbell
  Reply With Quote
Old 10-10-2023, 02:27 AM   #7 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
Quote:
Originally Posted by freebeard View Post
The Samurai (like my brother's 84 model) got the wide track because of problems with roll-overs.
AFAIK that was only for some export-bound models, while JDM kei versions and other international markets retained the narrow track.


But anyway, the current generation has the very same axles for both the JDM kei model and the international versions. The difference is basically wheels offset, and a different bolt pattern to prevent interchangeability between the wider-track wheels of this version and the narrower ones of the kei. Gear ratio is even the same for the AT versions, both for the 660cc turbocharged engine fitted to the kei and the 1.5L naturally-aspirated fitted to the Jimny Sierra.
  Reply With Quote
Old 10-10-2023, 06:45 PM   #8 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,481
Thanks: 7,707
Thanked 8,531 Times in 7,021 Posts
Quote:
AFAIK that was only for some export-bound models,
Countries where the owneres complained to their government when they could keep them upright?

IIRC my brothe's went over on black ice.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

History is a warning for the future -- Dr. John Campbell
  Reply With Quote
Old 10-14-2023, 03:14 AM   #9 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
Quote:
Originally Posted by freebeard View Post
Countries where the owneres complained to their government when they could keep them upright?
AFAIK it had nothing to do with the nanny-state.
  Reply With Quote
Old 10-14-2023, 03:51 PM   #10 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,481
Thanks: 7,707
Thanked 8,531 Times in 7,021 Posts
Quote:
Countries where the owneres complained to their government when they could[n't} keep them upright?
I need an editor.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

History is a warning for the future -- Dr. John Campbell
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com