Can anyone 'splain how to measure "Arch"??
 

I need to measure the arch on my springs for my add-a-leaf,.

I looked it up, it shows what the measurement is, but I hope I do not have to take off my leafs to obtain the measurement.

Do I?

Re: Can anyone 'splain how to measure "Arch"??
 

Did you forget HS Geometry. Get out your protractor and compass and measure the angle. Then plot it. You should be close to factory spec.

Re: Can anyone 'splain how to measure "Arch"??
 

Directed angle measure(theta) times radius= arch length

Re: Can anyone 'splain how to measure "Arch"??
 

Thank you so much, I know how to arrive at the measurement, can I do it crawling under my truck? Or do I have to remove it and measure laying on the ground?

Re: Can anyone 'splain how to measure "Arch"??
 

HB,
Check with manufacturer of product. Would make sense to not have to remove it first. However reality and Murphy's law state other factors. Like measure 2x cut once!:grouphug:

Re: Can anyone 'splain how to measure "Arch"??
 

:clapping:

Re: Can anyone 'splain how to measure "Arch"??
 

Can someone measure this arch for me?

Re: Can anyone 'splain how to measure "Arch"??
 

Sure, I probably could.

Re: Can anyone 'splain how to measure "Arch"??
 

The spring place should know what the stock specs (width, length, thickness, spring rate and center pin location) are. Then they can make the new spring add a leaf or a whole spring pack. You may nee longer U-bolts too.

Are they going to do the install?

It is allways Springtime Here!

Re: Can anyone 'splain how to measure "Arch"??
 

You guys are mean......I'm telling.:p

Re: Can anyone 'splain how to measure "Arch"??
 

Im pretty sure you measure at full droop too, so jack up the rear end first. :beerchug:

Re: Can anyone 'splain how to measure "Arch"??
 

Thank you!!!!!!:jump:

Re: Can anyone 'splain how to measure "Arch"??
 

You're talking about the truck right? :giggling:

Re: Can anyone 'splain how to measure "Arch"??
 

Yeah buddy! :jump:

Re: Can anyone 'splain how to measure "Arch"??
 

What needs to be measured? Can't you do it with a flexible tape while lying underneath the truck?

Re: Can anyone 'splain how to measure "Arch"??
 

Unforunately you have to do the math above to insure proper spring rate. You could have 62" leafs on 2 different rigs, but the distance between the hangers could be different. Effects sag, stiffness, recoil, and shock length and travel would also be effected :beerchug: etc. They take the measurements into consideration along with added rear end weight and customer preferences, if getting a custom job. DEAVER baby!:excited:

She is just doing an add a leaf, but they would still need the right measurements.

Re: Can anyone 'splain how to measure "Arch"??
 

Re: Can anyone 'splain how to measure "Arch"??
 

:jump: :jump: :jump:

Re: Can anyone 'splain how to measure "Arch"??
 

I wasn't advocating doing no math. I was really questioning if you had to remove it from the vehicle. I assume you measure the length along the spring from mount to mount (with a cloth tape) and straight line distance between the mounts....and then do some math. Do you have to do it with the load of the truck on it, or with the spring under no load?

Re: Can anyone 'splain how to measure "Arch"??
 

Sorry, yeah thats what ment in previous post when I said to measure at full droop, or with the load off of the springs. :beerchug: