Weighing a sandrail?

[SCDL Guy]

Im going to be ordering some coil overs. How do you figure the vehicle weight at each tire? I cant find any bathroom scales that go high enough.

[fastcorvairs]

Try UPS scales.  they go to 250.  That not enough??

[Engineer]

Im going to be ordering some coil overs. How do you figure the vehicle weight at each tire? I cant find any bathroom scales that go high enough.

Guess?  Or take it to your local Coop and roll each corner onto the scale.  It is free, and they usually leave them on and you can see the number through the window at night.  They will get you within 10# up to 100K.    Actually a front and rear weight would be close enough, and divide by two to get the corners.

Don't forget to calculate the shock angle, and the motion ratio.  Ie if the wheel travels 20" and the shock travels 10" then the motion ratio is 2:1, and the spring will feel twice the weight that the wheel does, minus unsprung weight of course.     Then depending on the shock angle calculate some more.

[Yoshi]

call a sprint or stock car shop and ask the how much they would charge for you to bring your rail up to their shop and stick it on a set of scales, all of those guys usually have them, my buddy builds stock cars and brought his set to my shop when I was figuring out spirng rates.....

[Enemy]

I rely on my local CoOp to use their scale..but ..you may not know what one of those are depending what part of the planet you are standing on!

I use another option from a buddy of mine. He races circle track and has a 4-corner scale set-up for dialing in his roundy-round cars. That gets you to within a few ounces. So if you know anyone that is in to circle track racing (physically), I bet they know someone that could hook you up!


Edit - Yea, and what Yoshi said as I pushed the post button!

[fabr]

Four corner scales are best and about anywhere in the US there will be a racer with a set.I agree find that dude and give him a few bucks for the help.