HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech
Register Photo Gallery FAQ Community Calendar

Reply
 
Thread Tools Display Modes
Old 06-16-2021, 01:58 PM   #1
dragracerray
Member
 
dragracerray's Avatar
 
Join Date: May 2017
Location: Webster, New York
Posts: 219
Likes: 472
Liked 208 Times in 89 Posts
Smile Where is it legal to add ballast?

I am changing classes and need to add 100lb (ug). I will use 2, 1/2" bolts with welded nuts per the rules,

Is it legal
-to add ballast in the passenger compartment?
-to add ballast under the car?
-to add ballast in the trunk?

thanks in advance, Ray
__________________
Ray Bassett
I/SA 1687, SS/DA 1687
"SuperPro is both", unknown
dragracerray is offline   Reply With Quote
Liked
Old 06-16-2021, 04:17 PM   #2
Hacksaw
Senior Member
 
Join Date: Sep 2016
Posts: 882
Likes: 206
Liked 310 Times in 174 Posts
Default Re: Where is it legal to add ballast?

All are legal, provided proper mounting. Try over top of rear as first choice.
Hacksaw is offline   Reply With Quote
Old 06-16-2021, 10:43 PM   #3
SSDiv6
VIP Member
 
Join Date: Feb 2003
Location: Glendale, Arizona
Posts: 3,044
Likes: 712
Liked 1,583 Times in 582 Posts
Default Re: Where is it legal to add ballast?

Quote:
Originally Posted by Hacksaw View Post
All are legal, provided proper mounting. Try over top of rear as first choice.
Top of the rear will affect the dynamics of the suspension. Start adding weight a few inches in front of the rear end pinion.
SSDiv6 is offline   Reply With Quote
Liked
Old 06-17-2021, 07:11 AM   #4
Larry Hill
Live Reporter
 
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,640
Likes: 1,937
Liked 10,711 Times in 2,230 Posts
Default Re: Where is it legal to add ballast?

Look in class rules and general regulations in the rule book on how to add weight safely. All so talk to tech and ask if there are places where adding weight is not allowed.
__________________
IHM Used Parts
https://ihmusedparts.com
888-821-1817
Larry Hill is online now   Reply With Quote
Liked
Old 06-17-2021, 11:40 AM   #5
cad
Senior Member
 
cad's Avatar
 
Join Date: Apr 2009
Location: Omaha, NE
Posts: 702
Likes: 202
Liked 91 Times in 51 Posts
Default Re: Where is it legal to add ballast?

Would it be legal to add it to the rear axle housing vs inside the car?
cad is offline   Reply With Quote
Old 06-18-2021, 08:32 AM   #6
Larry Hill
Live Reporter
 
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,640
Likes: 1,937
Liked 10,711 Times in 2,230 Posts
Default Re: Where is it legal to add ballast?

Guess you could make the axle tubes out of thicker material.
__________________
IHM Used Parts
https://ihmusedparts.com
888-821-1817
Larry Hill is online now   Reply With Quote
Liked
Old 06-18-2021, 09:25 AM   #7
Jeff Stout
VIP Member
 
Join Date: Dec 2001
Location: phoenix
Posts: 1,486
Likes: 66
Liked 704 Times in 281 Posts
Default Re: Where is it legal to add ballast?

No Prep car bolt weight to axle to not upset sprung weight.
Jeff Stout is offline   Reply With Quote
Old 06-18-2021, 09:34 AM   #8
ss3011
Senior Member
 
ss3011's Avatar
 
Join Date: Feb 2002
Location: Southeast Michigan
Posts: 909
Likes: 70
Liked 239 Times in 114 Posts
Default Re: Where is it legal to add ballast?

Try and minimize unsprung weight, keep the weight up in the body . I think the rules say that added weight can't be higher than the wheel wells . Adding weight to the axle will slow the axle reaction down , the lighter the better !
ss3011 is offline   Reply With Quote
Old 01-26-2022, 08:20 PM   #9
mjacquesjr
Junior Member
 
Join Date: Nov 2008
Location: Baton Rouge LA
Posts: 43
Likes: 6
Liked 1 Time in 1 Post
Default Re: Where is it legal to add ballast?

General Regulations Section 21, page 19
General Regulations
Requirements) is permitted. Removable weight must be securely
mounted to the frame or frame structure by a minimum of two
1/2-inch-diameter steel bolts per 100 pounds, or one 3/8-inch
steel bolt per 5 pounds; all other weight bars, pucks, etc. must
use minimum 1/2-inch-diameter SAE grade 8 bolts for attachment.
Hose clamps, wire, strapping, tape, tie wraps, etc. for securing
weight or ballast prohibited. Acceptable forms of ballast are 1)
Heavier gauge steel floors (i.e., 16- or 18-gauge, heavier gauge
and/or plate steel prohibited); 2) Frame reinforcing cross members;
or 3) the addition of protective equipment such as roll bars,
flywheel shield, etc. If additional ballast is needed and is permitted
by Class Requirements, it must be permanently attached to frame,
bolted with two 1/2-inch-diameter bolts per 100 pounds, with nuts
welded to bolts. Maximum amount of removable and/or permanent
ballast, unless otherwise stated under Class Requirements, is 500
pounds. Cars running 8.49 and quicker are limited to 250 pounds
maximum, per SFI chassis specification.
mjacquesjr is offline   Reply With Quote
Old 01-26-2022, 09:37 PM   #10
Chevy55
Banned
 
Join Date: Nov 2014
Posts: 324
Likes: 625
Liked 179 Times in 89 Posts
Default Re: Where is it legal to add ballast?

My suggestion would be if you have access to 4 corner scales see which corner of the car needs the weight.
Chevy55 is offline   Reply With Quote
Reply


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


All times are GMT -4. The time now is 04:37 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.