Lift arm or pull bar?

[MasterSbilt_Racer]

So had anyone seen a late model pull the front tires off the ground with a pull bar? If so if like to know because I don't know any that have. Lift bar I see it many times. Not saying this is fast but I'm trying to refer back to loading of the rear tires pull bar vs lift bar.

I have seen a Rayburn do it, yes.

I hope everyone I race against puts a pullbar on their 4 link car.

[RacerX10]

I've been fighting with a pull bar on a 4 link car for years. Giving up and going to a vanilla rocket setup.

Ain't nobody got time for that

[dirtrace09]

So had anyone seen a late model pull the front tires off the ground with a pull bar? If so if like to know because I don't know any that have. Lift bar I see it many times. Not saying this is fast but I'm trying to refer back to loading of the rear tires pull bar vs lift bar.

Both devices are trying to do the same thing in a different way. The idea is essentially to plant the rear tires as the pinion tries to rotate up by placing the force downward. The pullbar's angle and placement make a big difference as to where and how it applies the pulling force to the chassis. The liftarm is using a spring and shock combo to use a lifting effect on the chassis. That is also effected by the distance that it is placed from the pinion. Both have there place in the right situation. The pullbar is effective on a swingarm situation or a clamped up car because it allows the spring ahead to also figure into the equation. Think of what the car is trying to do under a full throttle load, then work forward from the rear of the car. Shocks, springs, weight placement, type of suspension, etc... all have to be taken into consideration to make a car consistent and driveable.

[Dirtmod13]

Both devices are trying to do the same thing in a different way. The idea is essentially to plant the rear tires as the pinion tries to rotate up by placing the force downward. The pullbar's angle and placement make a big difference as to where and how it applies the pulling force to the chassis. The liftarm is using a spring and shock combo to use a lifting effect on the chassis. That is also effected by the distance that it is placed from the pinion. Both have there place in the right situation. The pullbar is effective on a swingarm situation or a clamped up car because it allows the spring ahead to also figure into the equation. Think of what the car is trying to do under a full throttle load, then work forward from the rear of the car. Shocks, springs, weight placement, type of suspension, etc... all have to be taken into consideration to make a car consistent and driveable.

That's what I was wondering. With this new limited class, our springs are in front of axle. Left front is clamped. So that would definitely wrap into the coil over when on the gas. Havent looked at the right side yet, Think that should be clamped as well? Im assuming with it clamped it would put more pressure on that spring (as well as left) and technically should loosen it a bit. Am I on the right track here?

[SuperEight]

So had anyone seen a late model pull the front tires off the ground with a pull bar? If so if like to know because I don't know any that have. Lift bar I see it many times. Not saying this is fast but I'm trying to refer back to loading of the rear tires pull bar vs lift bar.

You can have too much of a good thing. Setting the car up to lift both front tires off is ludicrous? You ever see Moyer or Bloomquist or anybody that race for a living strive to lift front tires off the track? I've seen some pics taken in odd situations where this happened, but they weren't headed to the front, which last time I checked was the goal...

I have seen a Rayburn do it, yes.

I hope everyone I race against puts a pullbar on their 4 link car.

I know right, LOL!
Some combinations don't go well together. I think a 4 link works its best with a lift arm and Z-link stuff can benefit more from the pull bar, its that simple. I think the Z-link stuff can run with a lift arm too, but 4-link and pull bars just get kinda radical.

[SuperEight]

That's what I was wondering. With this new limited class, our springs are in front of axle. Left front is clamped. So that would definitely wrap into the coil over when on the gas. Havent looked at the right side yet, Think that should be clamped as well? Im assuming with it clamped it would put more pressure on that spring (as well as left) and technically should loosen it a bit. Am I on the right track here?

If you've gotta run in front on both sides, run LR clamp and RR on swing arm or birdcage. This will promote better drive under accel and promote better side bite on decel than the clamp. JMO

[popkorn42]

I'm thinking it's time to dig out the old TRI CITY BUGGY. .. cantilever shocks ...lay down lift arm
On the left side of the QC
where's Gary Oliver when we need him? ?

[junebug]

I thk a big question is what tires do u run if super hard tires are mandatory a pullbar might not be bad...both can be way too tight if tuned wrong and both can be awesome if tuned right...u can make either work but I think the lift arm is probably better if u want a car that isn't on the edge of pushing most nights

[Racerguy27]

SuperEight

Do you think that swingarm right side creates more sidebite on a slick track than four bar spring floated on birdcage (front). Anyone else can chime in as well thanks

[Racerguy27]

For you guys that think lift arm is the way to go. Do you guys think a lift arm would be better on a spring behind modified as well since they have smaller tires?

[MasterSbilt_Racer]

SuperEight

Do you think that swingarm right side creates more sidebite on a slick track than four bar spring floated on birdcage (front). Anyone else can chime in as well thanks

Not a chance.

[MasterSbilt_Racer]

For you guys that think lift arm is the way to go. Do you guys think a lift arm would be better on a spring behind modified as well since they have smaller tires?

I have way more LM experience than mods, but I say yes.

[Racerguy27]

MasterSbilt_Racer

what about z link would it have more side bite? I see a lot of guys running 4bar left and Z link left?
Thanks