Springs/dampers

[dogwood]

I'm going to change to 250's on my rebuild.
I found it bottoms out quite easly, especialy 2 up.
Yea OK we are both lardy......

David

Anyone say we need 300's will get a slap!!!!

[mr henderson]

Springs cannot be define by rate alone, the unfitted length is also a big consideration. For suspension to work as well as it could, then both the rate and the length must be right.

[dogwood]

????
Explain, for dummies.

David

[mr henderson]

Originally Posted by dogwood

????
Explain, for dummies.

David

Let's take a simplified example.

vertical spring damper with 400lbs of weight on it.

If the spring is a 200lb spring, then it will compress by 2 inches. If it started at 10 inches long, it will now be 8 inches.

If, on the other hand, it was a 400lb spring, then it would only compress 1 inch. If it started at 10 inches it will now be 9 inches long.

What I am getting at is that the two factors, rate and length are interdependant, and should both be chosen carefully to get the correct ride height and rate. Of course the adjustable spring base can be used to change the ride height, but people should be wary of using up the available suspension travel to compensate for having springs of the wrong length.

[Land Locked]

Originally Posted by dogwood

I'm going to change to 250's on my rebuild.
I found it bottoms out quite easly, especialy 2 up.
Yea OK we are both lardy......

David

Anyone say we need 300's will get a slap!!!!

I'll probably need 300's

That said, Mr Henderson makes a good point. If I understand it right then for two up each around the 100Kg mark 250's that are a wee bit longer should do the trick then.