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Author Topic:   Torsion bars?
racerwilson
Dirt Freak

Total posts: 357
posted March 05, 2004 08:00 PM  
Can you run torsion bars in the late model class? If so has anyone tried it? I think it could work alot better on slick tracks.

rocket36
Dirt Freak

Total posts: 209
posted March 15, 2004 11:15 PM  
i'm not sure it is legal in the us, but in australia, there is a couple of cars running torsion bar rear ends, like a standard arm sprintcar but using a j-bar rather than a jacobs ladder.

racerwilson
Dirt Freak

Total posts: 357
posted March 16, 2004 05:47 AM  
How well do they run?

rocket36
Dirt Freak

Total posts: 209
posted March 18, 2004 01:03 AM  
they appear very driver friendly and forgiving. i'm not sure that they are quite in the same league as a well hooked up and well driven 4 bar car but possibly a bit more consistant, but i've never driven one.
one of these cars won quite a few races a couple of years back but that driver has since moved to a 4 bar car (mastersbilt) and continues to be the driver to beat.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted March 18, 2004 02:02 PM  
you can not index them like a four link srping behind or a clamped up four bar car. thats why there not so popular.

racerwilson
Dirt Freak

Total posts: 357
posted March 18, 2004 09:04 PM  
You can run a 4 bar car with torsion. Torsion arms would run on rollers. Bert makes a 4 link birdcage for torsion. Was thinking about trying it. Has anyone tried this set up?
Thanks

zeroracing
Dirt Forum Champ
Total posts: 1876
posted March 18, 2004 09:12 PM  
i know you can run them with a four link, i have a friend that does on a micro type sprint. but you can not index them like on a lr spring behind four link car. if you could get them to index then torsion bars would be great.

[This message has been edited by zeroracing (edited March 18, 2004).]

racerwilson
Dirt Freak

Total posts: 357
posted March 19, 2004 05:26 AM  
zeroracing why do you think that indexing is so important?

zeroracing
Dirt Forum Champ
Total posts: 1876
posted March 19, 2004 07:11 AM  
indexing is one of the major keys to a 4 bar suspsension. thats why people run the springs on the back on the lr, or in front on the rr.
it makes the car act like it has stiffer springs as the body rolls, and will plant the tires harder.
you may go to the toolbox, and click onthe four link explained info and it will tell you more about indexing, also i think its the same article, www.rpmnet.com and click on articles and then on tech articles.
long story short, indexing is one of the major keys to making a 4 link quick on dryslick.
thats the reason why birdcages have shock mounts so low(try to get more travel while indexing)
the reason you run bar lengths like people do. the reason why lr springs are behind, and rr are in fornt on most late models.
hope this helps some, but read the articles on 4 bar suspensions and they will tell you more.

racerwilson
Dirt Freak

Total posts: 357
posted March 21, 2004 01:22 PM  
zero you can use indexing using a 4-link barcar. Just depends on where you mount the roller in front of or behind axle.

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