Toe in/Toe out

M

Mongo

Guest
I know NA$CAR allows a little bit of rear camber, but does anyone know if they run any rear toe also?
 
Not sure you could get a rear axle to toe without putting knuckles out at the end. Any advantage would probably be negated by breakdown factor.
 
It would be easy to do. There are axles available fron Speedway Engineering where the splines are are rounded instead of straight. Thats what they use when they run a cambered rear end. Along with an off-set bearing.

My reason for asking is since I can adjust rear camber and toe I am thinking of playing with rear toe and especially rear camber.
 
Time to pull out the rule book, or have SOMEONE ELSE call the local track.
 
Sounds good to me. What's it gonna hurt? Maybe not toe unless it's opposing so to help turn the car. If I'm not mistaken, twisting the axle forward on the left is an old as the hills dirt trick. Good luck going straight :D

As for camber.....absolutely.
 
I looked at Speedways online catalog. They call them "Crowned" axles. I am thinking of adding some positive camber to the left rear and negitive camber to the right rear.
 
Well, like I said....what's it gonna hurt?

I cannot think of a single reason not to camber the rear except for possible wheel spin coming off, but it just might improve traction.

I think what ya really need is a little bullring in yer back yard :D
 
Well, you guys are sitting on nice chunk of property. We could put a track in at yer place.

"Tort Raceway"? :D
 
Already have a dragstrip on the driveway. Thinking about getting some rabbits for doing a Tortoise And Hare Handicap.
 
I believe, but cannot say for absolute certain, that NASCAR will still allow a small of camber in the rear ends. Perhaps a degree or so. With the solid axle you pretty much are limited to a couple of degrees anyway if you want any durability in the unit.

By moving the pinion angle you can create toe in or out with a cambered axle, so I would guess that teams will play with that a bit.
 
Where ya been? Just wunderin.
I added 2 degrees positive camber to the left rear wheel. Have not had a chance to test it yet. My thinking was the left front gets positive camber to keep the whole tire planted in the turns and thought it might work in the rear also.

Since the rear toe is adjustable, I was wondering what toeing it in or out would do.
 
Had a new conveyor go online two Fridays ago, had to run a 7 day efficiency test. Kept me hopping through Thursday night. The system passed, so that means I get paid.

On Friday last we heard that a bunch of our friends were spending the weekend at Cape May ( a town down on the Jersey Coast) so the better half and I ran down for the weekend. Got back in last night.

Generally toe in on the rear tires will tighten the car up, toe out will loosen it up. The theory is that as the weight transfers to the right rear it will assume most of the load. If that tire is pointed out (toe out) it will pull the rear of the car out and make it turn more. The opposite happens with toe in as the angle of the right rear tire will tend to pull the rear of the car to the inside.

I hear tell, but have never experienced, that toe out on the rear will make the car a bit unpredictable under hard braking or deceleration because the tail will want to jerk first one way then the other. Toe in will tend to stabilize the tail under those conditions.

Given a chance I would definitely play with it. After all it remains imperative that we follow the racers creed.

It it ain't broke.......work on it til it is!! LOL
 
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