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Author Topic:   16" springs
bkap
Member
posted June 19, 2001 12:26 PM
I'm about to go to 16" rear springs (from 13") on the recommendation of the chassis manufacturer and was wondering if any of you folks has experience with them. The rates will stay the same. I'm also looking for shorter (+/- 4") fine-threaded jack bolts so I don't have to cut through the deck. Any pointers on that?


dirttrackracer
Member
posted June 19, 2001 04:39 PM
Don't waste your time and money switching them,here is why.There is no possible way that you are bottoming your springs unless they are way too soft,and you would still bottom shock first,A spring is the same rate whether it is 4" or 24",and finally a long spring will bow so much you will make the car very unstable.
Who is your chassis manufacturer?

[This message has been edited by dirttrackracer (edited June 19, 2001).]

KK17
Member
posted June 19, 2001 05:46 PM
I don't know exactly why the mfg. (Shaw) is suggesting the longer springs but I was bottoming the RR shock. I've lowered the bottom mount so it should solve that problem. The spring rates are fairly soft so maybe they're just trying to get more spring travel. I can't imagine a loaded 16" spring is going to bow that much more than a 13". At first glance, the coil diameter seems to be a little bigger than on the shorter springs. I'll check that when I get back from vacation. ;-}


jammin
Administrator
posted June 25, 2001 04:50 PM
There are a few things that change when you use longer springs. The spring will travel longer until it reaches a specific rate and the rebound of the spring will be a more continuous, longer action. There are a few advantages to running them. The longer spring will also twist somewhat if your running a setup that is on top of the rear end. It will allow a little more rotation if possible. The travel issue is that it will allow more movement within it's rate range and will allow more rear end movement and chassis movement to boot. It isn't something that will hurt you on dirt. But, I also feel that if you are on top of your game, then the effects of the 13-16" switch is minimal. There are many adjustments on the car that will allow for the same attributes as what your switching the springs for. My 2 cents.


jammin


bkap
Member
posted July 03, 2001 02:15 PM
Thanks, Jamin. Sunday we continued to bottom out the RR shock, despite lowering the mounting position 2.5". I've already got a set of the 16" springs and thought I'd give them a try to see if I can't get by without going to a stiffer rate. The car hooks up pretty well and I don't want to mess that up.

I'll let you know what happens...

bkap
Member
posted July 16, 2001 06:19 PM
Well, I put the 16" springs on but I honestly can't tell the difference yet. The track was junk with dust, ruts, and holes in the heat, heavily watered just before the semi and totally slick and rough for the feature. This is a new car (three races) and I don't have anything to compare with that night. I'll post more when I have a better idea of how they've changed things, if at all.


bigdracing74
Member
posted July 17, 2001 10:39 AM
all the 16" springs will do is give you a higher roll center, and more room for you car to roll over, which could be a good thing or a bad thing, when we tried it we really could not tell a diff, we won races with them, and with out them, you just have to find out if it is right for you or not




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