swing arm shocks?

[JustAddDirt]

I run a swing arm car in Iowa, which there are not to many. We have the car pretty fast (won a few races, run up front regular, etc.), however, always looking to be better against all these 4 bar cars.

I was curious about this statement from JustAddDirt: "later model lightning's had a long LR upper bar and a tall birdcage that would put massive amounts of traction in the car."

What kind of dimensions are we talking about on the LR bar and taller birdcage (just top tab gets taller)? Why does this give it more traction?

Thanks for any info.

LR top bar was in the neighborhood of 36'
Top tabs on birdcage were about 12" off centerline of axle.
(Measurements are going from memory, many not be exact)
Added a lot of leverage to birdcage.
Had to run the long rear bar because top birdcage bar was so tall.

[racin6mod]

moving the top bar up on the bird cage changes the drive angle we did this on a rayburn late model using the same length top bar and it was tight in the heat race but killed them in the feature the 4 cars had nothing for it. we only went up 1 1/2 on the bird cage. if not for a flat tire we would have won every race we ran that season. the track dropped lates the fallowing season.

the mod I've built was the same idea, I made the birdcages in my shop and they adjust up 3 inches on the lr.