Visit The Dirt Forum for More Information

Author Topic:   Spring and weight question
vintage39c
Dirt Full Roller

Total posts: 27
posted October 09, 2005 12:22 PM  
Was wondering what you guys are running for front coliover spring rates and what the rear bars rates would be if converted to coilovers. Also what are the four corner weight numbers when you scale your cars. Thanks.

dbradley
Dirt Freak

Total posts: 251
posted October 11, 2005 01:07 PM  
Vintage,
Bicknell recommendations:
LF: 250lbs RF:185
LR:.950 RR:.925
unsure of the conversions I think there might be a conversion rate formula in the toolbox on this site.
WEIGHTS
LF:490 RF:350
LR:710 RR:670

cozmo
Dirt Forum Racer

Total posts: 99
posted October 12, 2005 05:41 AM  
check this link to pro shocks bar calc for bar to coil over rates
http://www.proshocks.com/calcs/torsionrate.htm

coz

vintage39c
Dirt Full Roller

Total posts: 27
posted October 13, 2005 06:14 PM  

 
Thanks, for the responses. I've used the Proshock calculator before. To make sense of the bar rates you guys use I need to know what what the effective length of your torsion arms are. I run what's called a Super Modified or a Modified Coupe depending on where I run in the Midwest. The chassis is my own design and I'm just kind of curious to see the similarities and differences between mine and the East Coast car since mine has some East Coast design influence. I've attached a photo, check it out.

dbradley
Dirt Freak

Total posts: 251
posted October 14, 2005 07:51 AM  
Vintage,,
There are sportsman coupes that run at our tracks www.bearridgespeedway.com www.canaanfairspeedway.com .They run an adjustable rear leaf set up. They could get ya some info.. There are some really great photo's on the site

vintage39c
Dirt Full Roller

Total posts: 27
posted October 14, 2005 08:00 AM  
I've see both those sites, in fact I'm probably going to be flying up to the Northeast sometime this summer to drive a car for Dr. Phil Claussen one or two weekends. The only prob with your suggestion is that I run torsion bars all the way around and not leafs in the rear like they do.

dbradley
Dirt Freak

Total posts: 251
posted October 14, 2005 08:04 AM  
ok,
Ive got the number for ya they are winters numbers...29" length WIN6362-900 and 950

dbradley
Dirt Freak

Total posts: 251
posted October 14, 2005 08:08 AM  
Ive always wondered about a torsion front on our type mods. what are you using for arms and bars on the front?
If ya look on those sites our car is the #47 358 mod
Darin

bill9j
Dirt Full Roller

Total posts: 35
posted October 14, 2005 04:23 PM  
Darrin 4 bar dirt mods where ran for a while in he mid 80s not sure what rates or arm lengths they ran i think lots of olsens where done that way my dad had a Tobias that was like that but i was to young to rememeber rate and stuff

Back to the Archives