Does weight really matter that much? - Focus Fanatics
Focus Fanatics Ford Focus Forums
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace



Go Back   Focus Fanatics > Ford Focus Racing Discussions > Drag Racing

Drag Racing The place to discuss information about drag racing stats, tips and events. Track sanctioned events only.

Search This Forum | Image Search | Advanced Search    
FocusFest Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 03-08-2009, 03:44 PM   #1
fhg959
SE HABLA ESPAŅOL
 
fhg959's Avatar
 
Join Date: Oct 2007
Fan#: 50640
Location: Tia Juana, CA
What I Drive: 06 Big-Egg Rally

Posts: 2,858
FF Reputation: 52 fhg959 Excellent Standing Member
Buy-Sell-Trade Rating: (6)
Does weight really matter that much?

Yesterday I hit the 1/8 mile drag strip again. This time, I couldn't go lower than 11.27 (.88 reaction time) vs 10.7X last time. Here's the thing, last time I went to the drag strip I ran without the big-o-wing I have, without the 4 hella lights, no emergency tire, no jack, no nothing on the back (the rear seat stayed there), no tool bag (at least 25 pounds), 15" steelies all around, and myself was approx. 10 pounds less. My best time then was 10.7X with a reaction time of .67X Yesterday, I ran with all the extra lugage (wing, lights, tool bag, electric impact, extra tire, etc), plus the 17" EAP SVT wheels all around. Last time I ran with 91 octane gas (1/4 of tank) and a NOS octane booster. This time I only used 91 octane (1/2 tank). Besides weight, the only difference from this run to the last is that then I had NGKs Laser Iridum spark plugs and the Octane Booster, and yesterday I had E3 spark plugs, no octane booster, CFM udps and MSD cops. So, either my car got slower or weight really plays an important factor. What do you guys think?


__________________
-Team Duratec #122 SoCal #0
278whp & 259 ft/lb @ 2688rpm of Pure N/A baby!!!
7.22 @ 89 mph 1/8 mile
10.68 @ 127 mph 1/4 mile

I'm a time taker and I just wasted your time
fhg959 is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 03-08-2009, 03:57 PM   #2
stivo
Hiyadoin'
 
Join Date: Jun 2007
Fan#: 48389
Location: San Jose, CA
What I Drive: 2004 Infrared SVT, EAP #1440

Posts: 1,640
FF Reputation: 9 stivo Good Standing Member
Buy-Sell-Trade Rating: (6)
yes, the extra weight makes a big difference. I think the ratio is you need 10 more HP to move an extra 100lbs at the same rate... or something like that.

the wheel/tire combo could be the biggest difference though, depending on how heavy the 15" steelies are. unsprung weight has the biggest impact on acceleration.
stivo is offline  
    Reply With Quote
Old 03-08-2009, 04:42 PM   #3
captcurt_18
Freeskiing Fanatic!
 
captcurt_18's Avatar
 
Join Date: Aug 2007
Fan#: 49565
Location: Missoula, MT
What I Drive: 2005 Light Tundra ZX4

Posts: 5,455
FF Reputation: 26 captcurt_18 Great Standing Member
Buy-Sell-Trade Rating: (2)
^exactly. weight is huge in the world of racing. The less you have, the better.
__________________
2005 Light Tundra ZX4 2002 BMW 325xi
Sedan Revolution Member #120
University of Montana
Photoshop Guru! PM me if you need something chopped up
Give me rep if im helpful!
captcurt_18 is offline  
    Reply With Quote
Old 03-08-2009, 06:00 PM   #4
NAD23ZX3
Focus Addict
 
Join Date: Sep 2008
Fan#: 59327
Location: NC
What I Drive: 2004 Red Zx3

Posts: 1,158
FF Reputation: 9 NAD23ZX3 Good Standing Member
Buy-Sell-Trade Rating: (1)
weight is key to winning especially with wheels, not only that but aerodynamics can play a big role, cough cough roof scoop cough cough.
NAD23ZX3 is offline  
    Reply With Quote
Old 03-08-2009, 06:16 PM   #5
chhenscheid
Focus Enthusiast
 
chhenscheid's Avatar
 
Join Date: Jul 2008
Fan#: 57951
Location: Texas, United States
What I Drive: 2007 Black ZX3

Posts: 96
FF Reputation: 1 chhenscheid Good Standing Member
Buy-Sell-Trade Rating: (0)
Today I ran the quarter. I ran with my rims and subwoofer and spare. I ran 16.7 1/4 with all that crap. 16.01 without all the extra weight
chhenscheid is offline  
    Reply With Quote
Old 03-08-2009, 06:56 PM   #6
j-zetec_pr
MACHINERY TECHNIAN
 
j-zetec_pr's Avatar
 
Join Date: May 2007
Fan#: 47101
Location: Underway, Not Listed
What I Drive: 2000 Silver ZX3 Kona, MTX-75, Zetec

Posts: 7,320
FF Reputation: 27 j-zetec_pr Great Standing Member
Buy-Sell-Trade Rating: (9)
i believe it's a tenth of a second less for every 100 pounds you remove
__________________
Carpe diem quam minimum credula postero
ODOMETER: 169,000 miles
j-zetec_pr is offline  
    Reply With Quote
Old 03-08-2009, 07:31 PM   #7
mtadd162
Proudly Daily Driven
 
mtadd162's Avatar
 
Join Date: Jun 2007
Fan#: 47890
Location: Massachusetts, Afghanistan
What I Drive: 2005 Focus ST

Posts: 2,255
FF Reputation: 9 mtadd162 Good Standing Member
Buy-Sell-Trade Rating: (5)
yes, yes it does...if you have a 200hp engine moving a 3500 pound object compared to a 200hp engine moving a 3000 pound object....there wont be much difference but the 3000lb will win

+ everything said above me
__________________
05 Focus ST-Sold but missed
-ST Crew #73 N/A FTW!
Feb. 09' ROTM
SSR - Silver Sedan Revolution Member #1
Cams Installed, great made my car into a VTAK
mtadd162 is offline  
    Reply With Quote
Old 03-08-2009, 07:32 PM   #8
focusboy5
Focus Fanatic
 
focusboy5's Avatar
 
Join Date: Sep 2007
Fan#: 50002
Location: Wichita, Kansas, United States
What I Drive: Four Wheels

Posts: 2,859
FF Reputation: 31 focusboy5 Great Standing Member
Buy-Sell-Trade Rating: (13)
eh who cares about a straight line lol

But yeah like everyone else, weight is a huge difference esp with a 4 cylinder focus.
focusboy5 is offline  
    Reply With Quote
Old 03-08-2009, 07:36 PM   #9
Blackcatn2o
soon to be turbo!
 
Blackcatn2o's Avatar
 
Join Date: Jun 2007
Fan#: 48278
Location: Brandon, FL
What I Drive: 06 silver ZX4 ST

Posts: 5,729
FF Reputation: 48 Blackcatn2o Great Standing Member
Buy-Sell-Trade Rating: (13)
The thing is with wheels is if you run 15's (less weight an rotional mass) you will have a ton of sidewall flex witch's = slow steering reponds (IMO i hate slow steering respond's), if you have a larger rim like 17's or 18's (will be heavy an more rotional mass to move) you will have less sidewall flex witch = quick streering respond's. It really doesn't matter how hard your sidewall is (on a 15" wheel) you will still have a ton of flex because your tire actually pivot's where the sidewall an rim meets.

If you do alot of drag racing, circle track, rally racing i highly suggest a 15" wheel but if you do alot of road racing, autox, moutain racing go with a larger rim for less flex.
Blackcatn2o is offline  
    Reply With Quote
Old 03-08-2009, 07:38 PM   #10
jetrinka
Focus Fanatic
 
jetrinka's Avatar
 
Join Date: Mar 2007
Fan#: 45622
Location: Snohomish, WA
What I Drive: 88 5-speed XR4TI

Posts: 7,527
FF Reputation: 180 jetrinka Excellent Standing Memberjetrinka Excellent Standing Member
Buy-Sell-Trade Rating: (6)
^^^lol @ your sig..

Yeah weight makes a difference for sure.
jetrinka is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Do i have a light weight flywheel? video! triguy011 ZETEC Performance (2000-2004) 15 12-13-2006 02:41 PM
Focus Wheel Weight Jason2o Wheels & Tires - Sponsored By Tire Rack 13 09-15-2006 02:44 PM
psp & weight bench bryanjw82 Archive 2 08-18-2006 05:50 PM
Anyone know the weight of a foci microtonal Ford Focus & General Car Chat 28 09-10-2003 12:44 AM


All times are GMT -5. The time now is 10:46 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information : Site Map

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX. You can find all Ford Focus related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.