Landrum does leaf springs. Haven't talked to anyone at Calvert. Someone should be able to build a spring to spec.

Spring rate and compression at ride height. I'm not an expert but a low rate spring with enough arch to get it loaded and hold desired ride height will store more energy than a high rate spring that is deflected less..

More horsepower, gear, etc usually means less help needed from low rate springs to get the tire applied. i.e same car, same weight with a mild small block and automatic would get a different spring than a decent big block stick combo. Springs matter. They don't just hold the car up as some people think.

My thinking here is a power Adder car has enough horsepower to separate the spring Beyond its neutral position down track on a motor car we lack down track horsepower which means the leaf spring is actually trying to pull the tire back up off the track.. this is just a theory for instance I have five and a half inches of shock travel and a leaf spring that only suspends two and a half inches from ride height.. so the car on separation actually is beginning to fight the leaf spring after two and a half inches I think ideally when I'm looking for is for the same right height and a leaf spring that will suspend five or six inches that way all of the action will be controlled by shock adjustment not the added variable of the spring

My thinking here is a power Adder car has enough horsepower to separate the spring Beyond its neutral position down track on a motor car we lack down track horsepower which means the leaf spring is actually trying to pull the tire back up off the track.. this is just a theory for instance I have five and a half inches of shock travel and a leaf spring that only suspends two and a half inches from ride height.. so the car on separation actually is beginning to fight the leaf spring after two and a half inches I think ideally when I'm looking for is for the same right height and a leaf spring that will suspend five or six inches that way all of the action will be controlled by shock adjustment not the added variable of the spring

. You're thinking exactly the same way I am I'm just trying to figure out the best way to get there

Not anymore the business has sold I just don't think they have the technical background anymore

My theory is as stiff as possible on the front segment and soft on the rear. Kind of mimic what a ladder bar does with the front being stiff and the rear having the springs that hold up the car. All the rear segment would do is technically hold the car up.

just add a small plate kit .....


I know...... LMAO , im just being "that guy"

Props for keeping it all motor

The level your at now......info doesnt seem to come easy .
As already mentioned, get with a "good" shock guy and hopefully you get some help. ALSO 235 radial cars are right at your ET level, and yes they have a power adder but some are leaf spring cars and maybe some of that info can crossover to your program.
Are you data logging, and do you have rear shock sensors to see the travel as the car is going down the track??

AND ....nitrous cars dont add power down track, usually the kit is all in by .9 or less , so in reality you are pretty close to a 235 radial car

Shiloh,

Not sure where you heard that Cavert has sold but apparently it is not true.

I asked the company about it and this was their response:

"No sir, not true at all, John Calvert is still owner, he did move to
Arizona a year ago, so maybe that is why someone thinks this."

I have not used their customer service lately so I can't comment, it used to be excellent.

Bill