Thread: semi elip.

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I have seen some ref. to semi eliptical front springs. I think it was. how to do it on a 49 f 1 and lower it a lot ? I really want to use the straight axle. and not to interested in running over the speed limits, well at least not too much. thanks Ives

An oval would be considered an ellipse. A semi-ellipse would be the equivalent of half the oval, for this example lets say the lower half. That basically what most leaf springs, front or rear, are on cars and trucks. Your F1 should already have semi-elliptical springs on the front if it's stock (as well as the back).

Now that we've dealt with terminology, how do you lower it? You can go to a spring manufacturing/repair company, most good size towns have one (they do a lot of work for HD trucks, so check with one of those type shops if you can't find one in the phone book) and have them make you a reversed eye and/or de-arched set of springs, or you can get a pair of mono-leaf springs from Durant Ent. 949-673-5625 (no website listed)

OK maybe what i am meaning is some mod where the spring is cut and one half is used , or maybe im mistooken here Ives

Sounds like what you might be talking about is half of a semi-elliptic spring. That would be called a quarter elliptical spring. While they work fine for very light weight cars such as track roadsters, they are generally considered too light duty for something as heavy as your truck. A company that sells quarter elliptic kits is Posi's, www.posiesrodsandcustoms.com . Contact them, they'll probably give you the scoop.

I think that is the idea i had. i didnt have any luck with that e address but i shall try again later. thank youfor your patience. Ives

Now that I've fixed it it should work fine.