help needed with SFA leaf spring info

[krazy_kameleon]

Hi Guys,

I am hoping 1 of you suspension bofs out there can assist me.
While I recover from the cost of my "rebuild" I want to rebend/tension my leaf spring. I have seen this done in articles on the web with a fair amount of success but could not find how much to rebend them.

leaf spring.jpg (14.86 KiB) Viewed 1842 times

What is this distance in the sketch for a standard "new" spring and is there a difference front and rear? anyone know if I can "overbend" for a height increase?

This is just in the interim until I can splash out on a new Mikem set

Cheers

[CasKru]

Give Darrell at Mikem a shout. Even though you are not yet fitting their suspension, he is very knowledgeable and will gladly give you some advise

[krazy_kameleon]

Thanks Cassie.

BTW you still got my red leatherman there with you?

[CasKru]

Thanks Cassie.

BTW you still got my red leatherman there with you?

Yes sir

[MOFASA]

When you do have the info please post it here....

I have got some advice.
If you heat spring steel it does loose a small amount of its tension...
So with that in mind, try get someone to strip the pack and COLD roll them 1 by 1 to the new shape then repack the spring pack....
That way they SHOULD last a little longer than the heated way.

[ForYota]

If I may add to this, I had my leafsprings re-tentioned and it lasted a fully 3 months...

Maybe they did it wrong I dont know!

[CasKru]

If I may add to this, I had my leafsprings re-tentioned and it lasted a fully 3 months...

Maybe they did it wrong I dont know!

afaik they last between 3 and 6 months

[krazy_kameleon]

was planning on doing like this...

jig.jpg (14.42 KiB) Viewed 1814 times

just need to know how much it should be when standard as I was going to "overbend" it and then let it settle to "standard'

[Mud Dog]

You will need a sizeable jack to do that successfully and of course you will have a problem finding something strong enough to hold the stops ... then there's a major safety factor. Rather go to someone that has a proper hydraulic press. I did this successfully almost 7 months ago to a sagging spring and thus far all is still well. Read the report here




.

[krazy_kameleon]

Thanks for the tip!

[Hoppy]

I used to reset them with my hydraulic press and two press-blocks, you have to press each leaf separate and about 50 mm aprt, that gives you about ten bends per leaf, quite a time consuming task, nowadays i use my exhaust pipe bender.