Drag Racing Drag Racing (legal) & Associated Topics

Less weight? how does it make you faster.

Thread Tools
 
Search this Thread
 
Old Jun 2, 2004 | 07:36 PM
  #1  
Hondog's Avatar
Thread Starter
 
Joined: Jan 2003
Posts: 281
Likes: 0
From: hamilton, New zealand
Default Less weight? how does it make you faster.

I am in the process of taking another 200-250lbs out of my EG hatch, it already has a track weight of 1980lbs including me. I was curious if taking the weight out is just gonna make it faster off the line, hence lower 60ft's faster at the other end or will it make more of a difference.
I already run low 1.8 60ft's.. but hoping to get it down to 1.5-1.6's which is about 0.4-0.6seconds. but will the less weight make it closer to 1 second???
Reply
Old Jun 2, 2004 | 08:24 PM
  #2  
earl's Avatar
Honda-Tech Member
 
Joined: Jun 2001
Posts: 8,120
Likes: 3
From: Irvine, CA, usa
Default Re: Less weight? how does it make you faster. (Hondog)

You have a horsepower to weight ratio. You can increase it by adding hp or dropping weight. Easier to lift/accelerate 10 lbs than 100 lbs
Reply
Old Jun 2, 2004 | 08:42 PM
  #3  
1700anddroping's Avatar
Senior Member
 
Joined: Nov 2003
Posts: 5,167
Likes: 1
From: baxter, tn, usa
Default Re: Less weight? how does it make you faster. (earl)

very well put.
Reply
Old Jun 2, 2004 | 08:47 PM
  #4  
mportbusta's Avatar
Junior Member
 
Joined: Nov 2003
Posts: 268
Likes: 0
From: NOR, CAL
Default Re: Less weight? how does it make you faster. (Hondog)

Its like if my fat butt tried to have a foot race w/ my mom would tear me up!
Reply
Old Jun 5, 2004 | 02:38 PM
  #5  
Bunger's Avatar
Junior Member
 
Joined: Mar 2003
Posts: 962
Likes: 0
From: The road
Default Re: Less weight? how does it make you faster. (Hondog)

Real world HP / Weight Ratio is dynamic. This is mainly because of rolling and air resistance. The faster you go, the less HP you have to push the car forward; this is mainly because of the increased air resistance. Because of this, lightening your car will make more of a difference at lower speeds than higher.

Lets take a 2000lb car that has 200WHP and assume that at 100mph it requires 100WHP to maintain that speed (no increase or decrease in speed)

At 0mph the HP/W ratio is: 10:1

At 100mph the HP/W ratio is: 20:1

Now lets drop 500lbs off the car, and take away 50WHP.

At 0mph the HP/W ratio is: 10:1 (same as above)

At 100mph the HP/W ratio is: 30:1 (more than above)

The point here is that while a 1000lb car with 100WHP will have the same "static" HP/W ratio as a 5000lb car with 500WHP, the 500lb car will walk away from the 1000lb car at higher speeds. Thats why dropping weight is going to make such a difference in your 60 foot times (assuming traction doesn't become an issue).
Reply
Old Jun 5, 2004 | 07:29 PM
  #6  
hondaguyef's Avatar
Honda-Tech Member
 
Joined: Mar 2004
Posts: 8,159
Likes: 1
From: Roseville, CA
Default Re: Less weight? how does it make you faster. (Bunger)

I've always thought about 1/10th of a second off your e.t. for every 100lbs. dropped. just my 2 cents
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
turbo boost
Drag Racing
7
Jul 20, 2013 08:40 AM
amagmitsuvr4
Tech / Misc
1
Jun 17, 2004 02:19 PM
scorched0
Tech / Misc
15
Jan 8, 2004 03:48 AM
allmotorhonda
Drag Racing
15
Jan 2, 2003 04:55 PM
HX_Guy
Acura Integra
7
Aug 15, 2001 03:21 PM




All times are GMT -8. The time now is 01:27 PM.