Calvert split mono leaf springs?

[Rose Racing]

Anybody use the Calvert Split mono leaf springs? How much better are they than stock? What are the advantages? thanks

[B Parker]

Looks like you need to get to a race and check out most of the leaf spring stockers. Who doesn't use them. BP

[Gmirza]

If you plan on using Caltracs they are what you want to use. You can get them in different ride heights. They are designed to work with the Caltrac bars, other springs may create a bind in the suspension. I put this setup on my car last season and the Workmanship was excellent. There is a bunch of adjustability in them, so it may take a while to get the most out of them. Probably the best bolt on leaf spring suspension ever made.

[bykr]

Lighter than stock and adjustable ride height with different rear sections

[FireSale]

I have Calvert springs and CalTracs on my 68 Mustang. It was originally street legal and towed a teardrop trailer to the track each weekend. Worked on the track and tolerable on the road. A leaf spring car without Calverts is an odd bird these days. Match them with Caltracs or they will wrap up on you. Get your pinion angle right, too. I messed mine up and tried running shims to correct it. The reduced contact between the centering stud and spring caused it to start to separate and move the right rear wheel. A sharp eyed tech caught it in the waterbox before I cut a tire.

[Larry Hill]

Its been a long time but the Calvert springs reduced un-sprung weight by about 40#. The rear segment if fairly easy to adjust to change ride height.

[carbuilder]

Originally Posted by Rose Racing

Anybody use the Calvert Split mono leaf springs? How much better are they than stock? What are the advantages? thanks

From my 40 plus years of preparing many record holding leaf sprung cars, A spring is a spring,all it does is hold up the car,,,wanna change ride height ? a simple and very cheap easy way is re arc spring,,,why buy and buy when you dont have to??? As far as the spring rate,,,,take a twenty foot long piece of tubing, and support at each end with a jack stand,,,now push down in the middle you will have plenty of spring to it,,,,now cut it and half and do the same thing,,,you will not have the spring anymore because of its length,,,,now when you split a mono leaf,,,you do EXACTLY the same thing. Leaf spring cars with a traction device love the soft spring,,,,shock adjustments respond better and so do tire pressure changes.As far as advantages,,,, I see none,,,only disadvantages

If spending money that is not needed makes one happy,,,go ahead and buy the expensive stuff if that makes life easier,,,, but I can tell you from experience its not needed.

As I said earlier,Keener doesnt use them,and he pretty much can buy what he wants,,,but he has a STOCK spring for a reason,,,and his cars are as fast as they get he has those for a reason

[Todd Bailey]

After looking at Merc's car at Indy year before, it looks like they are using a modified slapper.

[carbuilder]

Cal tracs,ladder bars,four link,,,,modified slapper??? all traction devices,,,,I thought the question was about springs,,,, you guys keep your ball,,, Im going home

[Gmirza]

Originally Posted by carbuilder

From my 40 plus years of preparing many record holding leaf sprung cars, A spring is a spring,all it does is hold up the car,,,wanna change ride height ? a simple and very cheap easy way is re arc spring,,,why buy and buy when you dont have to??? As far as the spring rate,,,,take a twenty foot long piece of tubing, and support at each end with a jack stand,,,now push down in the middle you will have plenty of spring to it,,,,now cut it and half and do the same thing,,,you will not have the spring anymore because of its length,,,,now when you split a mono leaf,,,you do EXACTLY the same thing. Leaf spring cars with a traction device love the soft spring,,,,shock adjustments respond better and so do tire pressure changes.As far as advantages,,,, I see none,,,only disadvantages

If spending money that is not needed makes one happy,,,go ahead and buy the expensive stuff if that makes life easier,,,, but I can tell you from experience its not needed.

As I said earlier,Keener doesnt use them,and he pretty much can buy what he wants,,,but he has a STOCK spring for a reason,,,and his cars are as fast as they get he has those for a reason

I’m not looking for an argument here, but I disagree with some of your theory. I agree if you take a 20’ long “spring” and cut it in half it will be much stiffer. But the Calvert spring , even though it’s two pieces, it remains the same length. The distance between the load bearing points of the spring remain the same, that is not cut in half. The affect is completely different. With a two piece spring you can have different spring rates or arc ahead of the axle and behind it. So you can keep the front soft so it will work better with the traction device as you stated. Then ride height can be adjusted with the rear spring segment.
Adjustability is one of the advantages of the caltrac springs.