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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-11-2018, 09:04 PM   #1 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 342
Thanks: 7
Thanked 91 Times in 83 Posts
If a 1Fr 2Rr trike can turn in it's own length....

....why can't a four wheel front drive?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-11-2018, 10:18 PM   #2 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: Indiana
Posts: 1,323

Traverse 2LT FWD - '12 Chevrolet Traverse 2LT
90 day: 21.2 mpg (US)

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 41.42 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.59 mpg (US)
Thanks: 119
Thanked 276 Times in 183 Posts
Quote:
Originally Posted by Angel And The Wolf View Post
....why can't a four wheel front drive?
Something to do with CV joints not being so reliable at near 90 degree bends. That, and drive shafts tend to impact the tire itself when turned too sharply.
__________________




  Reply With Quote
The Following User Says Thank You to ksa8907 For This Useful Post:
Xist (02-13-2018)
Old 02-12-2018, 12:46 AM   #3 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 1,997
Thanks: 1,249
Thanked 454 Times in 323 Posts
If you want a four-wheeled vehicle to turn inside its own footprint, you have to give it four-wheel steering and individually powered wheels.
  Reply With Quote
The Following User Says Thank You to niky For This Useful Post:
Xist (02-13-2018)
Old 02-12-2018, 01:19 AM   #4 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,223

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,413
Thanked 3,050 Times in 1,943 Posts
I built a one wheel drive trike that can turn in under it's own length; the undriven wheel turns backwards. Of course it only turns that sharp in one direction but the other direction is really sharp too.
__________________


  Reply With Quote
Old 02-12-2018, 01:41 AM   #5 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 342
Thanks: 7
Thanked 91 Times in 83 Posts
Quote:
Originally Posted by ksa8907 View Post
Something to do with CV joints not being so reliable at near 90 degree bends. That, and drive shafts tend to impact the tire itself when turned too sharply.
Yeah, I guess it would require wheel motors. And that would add unsprung weight.
  Reply With Quote
Old 02-12-2018, 01:43 AM   #6 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 342
Thanks: 7
Thanked 91 Times in 83 Posts
Quote:
Originally Posted by niky View Post
If you want a four-wheeled vehicle to turn inside its own footprint, you have to give it four-wheel steering and individually powered wheels.
Yeah, wheel motors, with all the unsprung weight that comes with that. Good for ATVs but not road cars.
  Reply With Quote
Old 02-12-2018, 04:37 AM   #7 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,223

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,413
Thanked 3,050 Times in 1,943 Posts
Not fwd or 4ws but they sure can zero turn:

__________________


  Reply With Quote
Old 02-12-2018, 04:26 PM   #8 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 6,458
Thanks: 0
Thanked 634 Times in 562 Posts
With 4 wheels, I can't remind anything other than skidsteer tractors able to turn their own lenght.
  Reply With Quote
Old 02-13-2018, 12:50 AM   #9 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 342
Thanks: 7
Thanked 91 Times in 83 Posts
Not gonna happen, but I guess wagon steering would work. Still needs front wheel drive to work.
Attached Thumbnails
Click image for larger version

Name:	Little Red Wagon.JPG
Views:	0
Size:	29.7 KB
ID:	23504  
  Reply With Quote
Old 02-18-2018, 09:03 PM   #10 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 10,777
Thanks: 2,431
Thanked 3,412 Times in 2,695 Posts
It's been done.

__________________
.
Walk without rhythm and it won't attract the worm. --fatboy slim
_________________
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com