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Help Support Hardline Crawlers :
anyone else have this prob with leaf springs?
- Thread starter RUBITANk
- Start date
TreeClimber
Well-Known Member
These opinions are strictly my own.
Your impressive spring articulation is the exact reason you have a bent spring.
Any time you go 'spring over', you gain articulation due to two factors. Factor one: You're running a relatively flat spring. Flat springs are easier to flex, as they aren't as positively arched, ergo they are able to flex in both up and down directions much easier. Factor two: They are 'softer'. A 'heavier' spring is needed to support the weight of the rig. However by springing over, you've added a substantial 'lift' by raising the rig above the axle, so the spring doesn't need to 'lift' it as high and a 'softer' spring rate can achieve the same lift.
However the downside to the soft, flexy SOA ride are plentiful.
1) Bent springs
2) Axle wrap
3) Front end bouncing under steep inclines
4) Frond drive shaft slip yoke issues.
These negative attributes are compounded also when you go spring over because you're now also putting a much higher leverage on the spring. Let's say for example you have 36 inch tall tires. Then the center of the tire is 18 inches tall. With a spring under configuration, the spring will be about 16 inches from the ground (1/2 the tire's height, less the 2 inches or so the axle takes up) That means the tire is trying to bend the springs with only 16 inches of leverage. However in a spring under, you've now increased the leverage of the tire's contact patch to around 20 inches. The spring over really increases the tendency to bend springs.
The cheapest fix I can suggest is to find some main leafs that are 'military wrapped'. That style of main leaf has a secondary main leaf that is the entire length of the spring, and wrapped around the eyes. Creating, in effect, twice the difficulty of bending.
Your impressive spring articulation is the exact reason you have a bent spring.
Any time you go 'spring over', you gain articulation due to two factors. Factor one: You're running a relatively flat spring. Flat springs are easier to flex, as they aren't as positively arched, ergo they are able to flex in both up and down directions much easier. Factor two: They are 'softer'. A 'heavier' spring is needed to support the weight of the rig. However by springing over, you've added a substantial 'lift' by raising the rig above the axle, so the spring doesn't need to 'lift' it as high and a 'softer' spring rate can achieve the same lift.
However the downside to the soft, flexy SOA ride are plentiful.
1) Bent springs
2) Axle wrap
3) Front end bouncing under steep inclines
4) Frond drive shaft slip yoke issues.
These negative attributes are compounded also when you go spring over because you're now also putting a much higher leverage on the spring. Let's say for example you have 36 inch tall tires. Then the center of the tire is 18 inches tall. With a spring under configuration, the spring will be about 16 inches from the ground (1/2 the tire's height, less the 2 inches or so the axle takes up) That means the tire is trying to bend the springs with only 16 inches of leverage. However in a spring under, you've now increased the leverage of the tire's contact patch to around 20 inches. The spring over really increases the tendency to bend springs.
The cheapest fix I can suggest is to find some main leafs that are 'military wrapped'. That style of main leaf has a secondary main leaf that is the entire length of the spring, and wrapped around the eyes. Creating, in effect, twice the difficulty of bending.
WHITE TRASH1
fruit stripe
You spent a decent amount of time in thought and then puting those thought to the screen. Too bad the spring over had jack **** to do with the bent spring... He already said he ran into stuff with the shackle, thats the smoking gun. If I'm not mistaken those are the 1" leaves designed for a spring over, hence the lack of axle wrap he spoke of.
TreeClimber
Well-Known Member
More of my biased opinions.
Yeah.
He hit something.
Big whoop.
But if he'd originally had double wrapped springs, it'd taken twice the force to bend 'em.
And I'm not sold on your logic either. Spring over always increases leverage, which IS a contributing factor when **** bends.
Yeah.
He hit something.
Big whoop.
But if he'd originally had double wrapped springs, it'd taken twice the force to bend 'em.
And I'm not sold on your logic either. Spring over always increases leverage, which IS a contributing factor when **** bends.
WHITE TRASH1
fruit stripe
Stop reading things I didn't type... Leaves bend, period. No matter the cofiguration they are used.. The fact that he hit something is in fact the direct cause of the bent leaves. Yes a double military or oven triple snail wrapped main would have made it harder to bend but it WILL bend.
I know a guy that had an E brake failure last winter in his yota. The truck rolled down a hill backwards into a tree hitting squarely on the shackle. The exo shifted forward a bit and the all pro snail wrapped spring was not only bent like the one pictured but the sleeve and bolt pushed through the urethane bushing and busted the main eye.
So yea, anything will bend :;
Skid Mark
Well-Known Member
When your giveing her to much wood....
Some times you swap cylenders and **** happens..
4-Link time
Some times you swap cylenders and **** happens..
4-Link time
Last edited:
What he said.
I've bent plenty of stock YJ main leafs like that.
Build a "stop" for the shackle so that it can't invert when you ram it into something. The RE 1.5" SOA springs are great springs, but you still have to treat them nice... they aren't indestructible.
CHOP SHOP
Well-Known Member
how many springs have YOU personally bent?:corn:
crash2
-Oh no I picked a side-
I had bent maybe 3 leafs and broke like 4 in my time......
WHITE TRASH1
fruit stripe
I bent both rear mains when I first built this truck. I made the mistake of not adding a full length second leaf to support the main on a set of broncoII springs. Bent a 52" chevy main when I rolled the truck last year and both of my 3rd gen rears up front main and second leaves are S shaped from outright abuse.
Anything else?
CHOP SHOP
Well-Known Member
and both of my 3rd gen rears up front main and second leaves are S shaped from outright abuse.
Anything else?
nothing else. I just wanted you to tell how good rears up front were again!!:haha::kissmyass::haha:
WHITE TRASH1
fruit stripe
LOVE 'EM! considering these springs had 127k on them when I put them in, the smallest tire ever wheeled on was a set of 35's for one trip otherwise it's been 38's - 44's over the last 6 years I'd say I am still getting my money's worth.
