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Author Topic:   backspacing
stroker21x
Dirt Full Roller

Total posts: 37
posted December 28, 2004 08:33 PM  
what should i run for backspacing on all four racing a purestock on a 3/8 low banked wet slick track thanks for the help!!!

redneck racing
Dirt Forum Champ
Total posts: 860
posted December 28, 2004 09:36 PM  
Try lf3 rf2 lr4 rr2. Hope this helps. Eddie

Istock66
unregistered Total posts: 860
posted December 29, 2004 05:27 PM           send a private message to redneck racing   Edit/Delete Message   Reply w/QuoteBBBBBB
all 3s any tire can go anywhere then.

racer17j
Dirt Forum Champ
Total posts: 5390
posted December 29, 2004 07:30 PM  
When I go from a 2 inch backspace rr to a 5 inch back space rr same exact rollout, the scales show less than .2 of a change, a chunk of mud makes more difference.

Jake, The reason I posted this is you frequently post to let the scales tell you. Beings that I dont know if you own scales or have actually ever moved spacers or wheels around I thought you might want to KNOW this.

The scales tell you next to nothing in this situation, what is being effected is more thru leverage and wt transfer, increasing or decreasing side bite.
If you went by scales alone you would not mess with different backspace wheels or spacers whatsoever. 4-5 lbs of air makes more change on the scales.

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted January 01, 2005 11:49 AM  
If your going from a 2" to a 5" you've got more problems then sidebite bud... If your going that jurastic, i'd start with a 4" at least and set the car up to like that as a tacky track wheel. Beings you can't adjust bar angles or things of that such its the only way to get sidebite...
General Rule of Thumb,
Wide front, Narrow Back end on a stock car
try 2"s on the front and 3"s on the rear to start, when it goes dry slip on a 4" on the rr and a 2" on the lr for side bite.

racer17j
Dirt Forum Champ
Total posts: 5390
posted January 01, 2005 01:16 PM  
Well on MY CAR i never run 2 offs on the right side...a 2 off on the right front makes it push going in..a 2 off on the right rear makes it loose all the way around,i agree it has more to do with weight transfer and sidebite than the actual weight on that corner.

petordragon
Dirt Maniac

Total posts: 167
posted February 08, 2005 07:46 PM  
From reading this I get no starting point for backspacing. Seemes to me every one runs it different. extreme says wide front narrow back then gives 2" front and 3" back maybe I don't understand what narrow and wide mean but that don't make sense to me.

[This message has been edited by petordragon (edited February 09, 2005).]

doubletrouble racing
Dirt Forum Racer

Total posts: 88
posted February 08, 2005 10:17 PM  
I was always told to keep the LR up under the car...and run the same off sets on the other corners.Someone told me if it goes dry slick to swich the LR and RR around.Our rules say u can run any off sets as long as they are the same on all 4 corners.Last years techs couldnt read a tape measure now there is a BRIGHT guy taking over...guess i better get them all the same.....what offsets should be run if running them all the same on each corner

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The opinions,thoughts,and comments of double trouble are that of the car owner and are not affiliated with the driver "Dirt Track Girl" , the track Hill Country Raceway ,or any other outside person or institution

racer17j
Dirt Forum Champ
Total posts: 5390
posted February 09, 2005 07:26 AM  
Then you could run 3's all the way around and put spacers on every corner but LR.

You would then be in compliance with the rules. All wheels would have the same spacing, but he LR would not have a spacer on it.


quote:
Originally posted by doubletrouble racing:
I was always told to keep the LR up under the car...and run the same off sets on the other corners.Someone told me if it goes dry slick to swich the LR and RR around.Our rules say u can run any off sets as long as they are the same on all 4 corners.Last years techs couldnt read a tape measure now there is a BRIGHT guy taking over...guess i better get them all the same.....what offsets should be run if running them all the same on each corner



dirty58
Dirt Maniac

Total posts: 115
posted February 14, 2005 03:21 PM  
all cars handle differnt scale first to get % right then hopefully ya can borrow some wheels go to the track on a pratice night and find what works best for you

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