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DRR Elite
posted
I can’t remember asking this here: we have an S&W soft tail dragster for my son.
Pushing it around on flat ground the wheel will turn right. Quite a bit. Rear end is centered and straight. Car strings straight. Rack snd steering are straight and centered. Wheels/tires are straight and have just a little toe in.
Seems like all the normal stuff checks out. It pulls a little going down the track. Nothing looks odd looking at the car


Foxtrot Juliet Bravo
 
Posts: 6426 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Sportsman
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Measure the rollout of the rear tires - is one larger than the other?
 
Posts: 732 | Location: Upstate NY | Registered: July 02, 2013Reply With QuoteReport This Post
DRR Sportsman
Picture of TD3550
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Average toe 1/16 in.
 
Posts: 1410 | Location: Under a Truck | Registered: August 23, 2013Reply With QuoteReport This Post
DRR Trophy
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Everything said above I would also check the rod ends that make up the tie rods and if the steering shafts have any u joints might want to peek at those as well
 
Posts: 407 | Location: Natick MA | Registered: November 15, 2017Reply With QuoteReport This Post
DRR Top Comp
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quote:
Originally posted by 183N:
Measure the rollout of the rear tires - is one larger than the other?


The issue 99.9% of the time.


.
Dave



F J B

 
Posts: 4497 | Location: Earth | Registered: February 08, 2006Reply With QuoteReport This Post
DRR Elite
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No ujoints in the steering. Tie rods are not at all loose. 1/16 or so toe. I have not measured the roll out. But these tires came off my other dragster, which had no issue with this. i gotta say it's a head scratcher.


Foxtrot Juliet Bravo
 
Posts: 6426 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Top Comp
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Measure or swap the tires and see if the problem follows the tire.


.
Dave



F J B

 
Posts: 4497 | Location: Earth | Registered: February 08, 2006Reply With QuoteReport This Post



DRR S/Pro
Picture of Big Steve
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Try a bit more toe in, I have a friend that her dragster front would always hunt going down the track, change toe in to 1/8 per side, 1/4 total and the car goes straight down the groove now and no tire scrubbing. That little change made it a whole different car to drive.
Be worth a try, its free
 
Posts: 2491 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR S/Pro
Picture of Big Steve
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If a simple toe adjustment does not help, since it a 4 link car you could always add some rear steer to the rear end housing. When I first switched mine to top dragster the faster I went the more the car wanted to go left in the middle of the track, rear steer cured that once I moved the housing the correct way as I was looking at it all wrong at first.
 
Posts: 2491 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR Sportsman
Picture of pentastarrail
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Does it have any front end stagger.
If so, you may need a little more toe in.


Man was not built to fly ... That's why he built HEMI's

Frank Zeffiro
ALIAS -- BIG KAHUNA
 
Posts: 956 | Location: Winchester, Connecticut | Registered: September 20, 2002Reply With QuoteReport This Post
DRR Elite
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Rollout within 1/4". It's just weird that even pushing it in the lanes, it will pull right. No stagger. I could stick a little more stagger in it. When I bought the car, the front tires were worn. I have a feeling that the PO had the same issue, and used more toe in.


Foxtrot Juliet Bravo
 
Posts: 6426 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Pro
Picture of rusty
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what about anti roll measurements


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1438 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Elite
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quote:
Originally posted by rusty:
what about anti roll measurements


What do you mean?


Foxtrot Juliet Bravo
 
Posts: 6426 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Pro
Picture of rusty
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is it possible there is enough preload on the antiroll to make it walk a little bit in a distance


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1438 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post



DRR Pro
Picture of rusty
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just throwing thoughts could a brake drag and do that


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1438 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Trophy
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If the left spindle is slightly lower or a significant amount of weight bias than the than the right it would push to the right due to caster.
 
Posts: 192 | Location: Rock><Hard Place | Registered: February 20, 2010Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
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I would try swapping front wheels and see if that changes anything and makes it go left.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4138 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Elite
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Great thoughts and things to look at


Foxtrot Juliet Bravo
 
Posts: 6426 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Pro
Picture of CURTIS REED
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quote:
Originally posted by bry-war:
If the left spindle is slightly lower or a significant amount of weight bias than the than the right it would push to the right due to caster.


Caster was my first thought.



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Posts: 3027 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
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Let us know what you find out.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4138 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
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