10-06-2015, 01:10 PM
|
#31 (permalink)
|
|
Master EcoModder
Join Date: Sep 2010
Location: Denver, CO
Posts: 1,300
Thanks: 315
Thanked 179 Times in 138 Posts
|
Actually larger diameter wheels are heavier and have higher moments than smaller wheels, keeping the overall diameter and width constant. But they do allow bigger brakes and better tire control, that much is true, and more important in competition.
__________________
I'm not coasting, I'm shifting slowly.
|
|
|
|
|
The Following User Says Thank You to UFO For This Useful Post:
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
10-06-2015, 05:45 PM
|
#32 (permalink)
|
|
Not Doug
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,230
Thanks: 7,254
Thanked 2,229 Times in 1,719 Posts
|
Metal is generally heavier than rubber and air.
|
|
|
|
|
10-06-2015, 10:03 PM
|
#33 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,520
Thanks: 8,073
Thanked 8,870 Times in 7,322 Posts
|
In an earlier thread I had sources to show that a forged aluminum Centerline wheel is at parity with rubber and air. Everything else is heavier.
|
|
|
|
|
10-06-2015, 10:30 PM
|
#34 (permalink)
|
|
Not Doug
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,230
Thanks: 7,254
Thanked 2,229 Times in 1,719 Posts
|
Quote:
Originally Posted by freebeard
In an earlier thread I had sources to show that a forged aluminum Centerline wheel is at parity with rubber and air. Everything else is heavier.
|
Heh. Here?
Quote:
Originally Posted by freebeard
I've been through 18 pages of search results looking for a thread were I quoted a magazine article to that effect. Unsuccessfully.  As I recall they replaced steel rims with plus sized Centerline forged alloys and showed a weight savings (looking at the fronts of a car with massive rear tires) |
I wondered if I could find it, but gave up when I saw that. |
|
|
|
|
10-07-2015, 04:45 AM
|
#35 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,520
Thanks: 8,073
Thanked 8,870 Times in 7,322 Posts
|
http://ecomodder.com/forum/showthrea...tml#post361749
Quote:
|
Originally Posted by myself in 2013
But it's so much fun to speculate. Here's an article on comparing steel wheels with Centerline Convo Pro, which I suspect is as light a wheel as you will find:
Light Wheels Vs Heavy Wheels - Wheel Tech - Comparison - Car Craft
Considering only the front, the weights:
M/T E.T. Front 26x4.5-15 11.42lb
Convo Pro Aluminum 15x4 9.64lb
Rally Steel 15x4 18.78lb
The rear Centerlines:
Convo Pro Aluminum 15x7 11.13lb
Convo Pro Aluminum 15x8 12.43lb
The weight of a 4x19 Centerline, if it existed would be about 11-12lb.
Another way to look at it is the aluminum wheel and the tire have similar weight, while the steel wheel is 50% greater. so it looks like on forged aluminum the weight would be nominal, but on steel the 19" tire combo would be heavier.
I'm pretty sure cars raced on aluminum wire wheels in the 30s, but you'd be paying museum prices. Can you lace an aluminum motorcycle rim on car spokes and hub? |
|
|
|
|
|
The Following User Says Thank You to freebeard For This Useful Post:
|
|
|
10-07-2015, 04:17 PM
|
#36 (permalink)
|
|
Aero Deshi
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,065
Thanks: 430
Thanked 669 Times in 358 Posts
|
Quote:
Originally Posted by wdb
I still don't understand the allure of gigantic rims + rubber band tires. I think they look stupid.
|
You sayin yer not down with my chariot?
|
|
|
|
|
10-07-2015, 05:33 PM
|
#37 (permalink)
|
|
Master EcoModder
Join Date: Sep 2010
Location: Denver, CO
Posts: 1,300
Thanks: 315
Thanked 179 Times in 138 Posts
|
You sure could fit some huge brakes on that "chariot" now. Going to need them to stop that huge rotating mass.
__________________
I'm not coasting, I'm shifting slowly.
|
|
|
|
|
